Kotlin (JetBrains)
(https://kotlinlang.org) 📸 Data Snapshot: May 27, 2026Classify each sentence as substantive or hollow. Grounding markers — numbers, currencies, dates, technical units, named entities — outweigh marketing adjectives. When fluff sits right next to hard evidence, the fluff is forgiven.
Information density is exceptionally high, with a strong emphasis on substance over fluff. While the H1 hero section contains typical adjectives like Concise, Multiplatform, and Fun, the body text immediately validates these with technical features such as null-safety, coroutines, and JVM interoperability. There are specific code examples provided for the Koog framework and standard Kotlin syntax, which serve as concrete proof of the language’s utility.
Information Density is read straight from the body copy: how much of the text carries grounded, checkable substance versus hollow filler. Below is the clean text the engine analyzed, then the industry’s known generic-claim patterns to weigh it against.
📝 The Narrative — clean text per page (the substance-vs-filler signal)
HOMEPAGE (https://kotlinlang.org) Kotlin Programming Language
[IMG: Hero Image]
[H1] Kotlin
Concise. Multiplatform. Fun.Developed by
[IMG: jetbrains logo]
[IMG: Multiplatform icon]
MultiplatformGo cross‑platform without compromising performance, UX, or code quality.BackendAndroidAILearn moreLearn moreLearn moreLearn more
[H3] Start Kotlin tour
Quick Start
[IMG: Hero Image]
[H1] Kotlin
Concise. Multiplatform. Fun.Developed by
[IMG: jetbrains logo]
[IMG: KMP icon]
Multiplatform
[IMG: Backend icon]
Backend
[IMG: AI icon]
AI
[IMG: Android icon]
Android
[IMG: Kotlin icon]
Kotlin tourSimpleCode examplesSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundRunfun main() {
val name = "stranger" // Declare your first variable
println("Hi, $name!") // ...and use it!
print("Current count:")
for (i in 0..10) { // Loop over a range from 0 to 10
print(" $i")
}
}Edit code example
[IMG: Hero Image]
[H1] Kotlin
Concise. Multiplatform. Fun.Developed by
[IMG: jetbrains logo]
MultiplatformAIBackendAndroidKotlin TourQuick StartSimpleCode examplesSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundRunfun main() {
val name = "stranger" // Declare your first variable
println("Hi, $name!") // ...and use it!
print("Current count:")
for (i in 0..10) { // Loop over a range from 0 to 10
print(" $i")
}
}Edit code example
[IMG: Hero Image]
[H1] Kotlin
Concise. Multiplatform. Fun.Developed by
[IMG: jetbrains logo]
[IMG: KMP icon]
[H3] Multiplatform
Go cross‑platform without compromising performance, UX, or code quality.
[IMG: AI icon]
[H3] AI development
Leverage AI models tailored for Kotlin, backed by JetBrains' open data, benchmarks, and tooling built into your workflow.
[IMG: Backend icon]
[H3] Backend
Build fast applications with Spring or Ktor. Kotlin's expressiveness makes backend code a pleasure to write and maintain.
[IMG: Android icon]
[H3] Android
Write less boilerplate, ship more features with the official language of Android development since 2019.
[IMG: Kotlin icon]
[H3] Kotlin Tour
Quick StartSimpleCode examplesSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundRunfun main() {
val name = "stranger" // Declare your first variable
println("Hi, $name!") // ...and use it!
print("Current count:")
for (i in 0..10) { // Loop over a range from 0 to 10
print(" $i")
}
}Edit code example
[H1] Kotlin
Concise. Multiplatform. Fun.
[IMG: kotlin]
Get startedDeveloped by
[IMG: jetbrains logo]
[IMG: kotlin]
[H2] Latest news
[IMG: KotlinConf’26 Keynote Highlights: Advances in Language Design, Tooling, AI-Driven Workflows, and Multiplatform Development]
May 21, 2026
[H3] KotlinConf’26 Keynote Highlights: Advances in Language Design, Tooling, AI-Driven Workflows, and Multiplatform Development
Kotlin turns 15 this year, and it really is everywhere. It powers systems behind everyday moments, such as tapping to pay, buying commuter rail tickets, using in-flight entertainment, and even filing tax returns online. As AI continues to reshape how software gets built, Kotlin’s growing real-world impact reflects the importance of languages and tools that […]
[IMG: Introducing a Security Support Policy for the Kotlin Standard Library]
May 21, 2026
[H3] Introducing a Security Support Policy for the Kotlin Standard Library
Upgrade rhythms vary significantly among Kotlin’s user base. Some teams update whenever a new release lands without a second thought. On the other hand, a team inside a regulated organization moves on a multi-quarter cycle and treats every dependency as something that has to be reviewed, approved, and then frozen in production for a while. […]
[IMG: Official Kotlin Support for Visual Studio Code Is Now Available in Alpha]
May 21, 2026
[H3] Official Kotlin Support for Visual Studio Code Is Now Available in Alpha
Today at KotlinConf 2026, we announced the Alpha release of the official Kotlin extension for Visual Studio Code. IntelliJ IDEA and Android Studio remain the most complete environments for Kotlin development. But not every Kotlin developer works there every day. Some prefer VS Code, or already have it as part of their setup. Kotlin by […]
[IMG: Built for Productivity: What the Data Finally Shows About Kotlin]
May 20, 2026
[H3] Built for Productivity: What the Data Finally Shows About Kotlin
Years of productivity-focused design are now visible in the data. Pragmatism has been central to Kotlin’s design from day one. The language prioritizes the developer’s convenience and productivity over academic purity or feature ambition. Developers describe working in Kotlin in a fairly consistent way: more time spent on what you’re trying to build, less time […]Kotlin blogWhy Kotlin?SimpleCode examplesSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundSimpleAsynchronousObject-orientedFunctionalIdeal for testsOpen in PlaygroundRunfun main() {
val name = "stranger" // Declare your first variable
println("Hi, $name!") // ...and use it!
print("Current count:")
for (i in 0..10) { // Loop over a range from 0 to 10
print(" $i")
}
}Edit code exampleGet started
[H2] Kotlin in action
[IMG: McDonald]
McDonald's leverages Kotlin Multiplatform (KMP) for their global mobile app, enabling them to build a codebase that can be shared across platforms, removing the need for codebase redundancies.Kotlin Multiplatform
[IMG: AWS]
AWS opted for Kotlin over Java for Amazon Quantum Ledger Database (QLDB) thanks to its expressiveness and structured concurrency. They rewrote QLDB in Kotlin, enhancing the user experience, benefiting from its development workflow, and adopting it fully for server-side development.Server-side
[IMG: Philips]
Philips utilizes Kotlin Multiplatform in its HealthSuite digital platform mobile SDK. With KMP, they accelerated the implementation of new features and fostered increased collaboration between Android and iOS developers.Kotlin Multiplatform
[IMG: Adobe]
Adobe Experience Platform chose Kotlin for server-side development because of its concise syntax, async capabilities, and interoperability with Java. This shift boosted productivity and improved the developer experience, replacing Java for real-time services.Server-side
[IMG: Forbes]
By sharing over 80% of logic across iOS and Android, Forbes now rolls out new features simultaneously on both platforms, keeping the flexibility to withhold or customize features based on the specific platform.Kotlin Multiplatform
[IMG: Atlassian]
Atlassian adopted Kotlin for the Jira Software cloud, leveraging its Java compatibility for seamless integration and minimizing migration challenges. Kotlin's ease of use improved developer productivity and boosted team satisfaction and efficiency.Server-sideSee all case studiesEnterprise playbook
[H2] Share code on your terms and for different platforms
Simplify the development of cross-platform projects with Kotlin Multiplatform. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming. Kotlin applications will work on different operating systems, such as iOS, Android, macOS, Windows, Linux, watchOS, and others.Learn about Kotlin Multiplatform
[H2] Kotlin + AI
JetBrains is investing in AI models tailored for Kotlin, providing open data, benchmarks, and AI-native tooling integrated into your workflow.At the same time, Kotlin makes it easy to build your own AI-powered features with seamless backend integrations and a growing ecosystem.
[H3] What you get with Kotlin + AI
Strong support across JetBrains AI tools like AI Assistant and JunieRobust functionality for building AI-powered apps on the JVMNative integration with tools like Spring AI and LangChain4jOpen data and benchmarks for better code generationLearn about JetBrains AIBuild AI apps with Kotlin
[H3] Build your own AI agents with Koog
Koog is JetBrains’ new Kotlin-native framework for creating powerful AI agents that run locally, interact with tools, and automate complex tasks. Whether you’re developing a simple chat assistant or an advanced multi-step workflow, Koog gives you full control with clean Kotlin code – no external services are required. Build, extend, and experiment with AI agents entirely in Kotlin.Get started
[H2] Big, friendly and helpful community
Kotlin has great support and many contributors in its fast-growing global community. Enjoy the benefits of a rich ecosystem with a wide range of community libraries. Help is never far away — consult extensive community resources or ask the Kotlin team directly.Join the community
[H2] Kotlin Foundation
Actively supports community efforts in developing the Kotlin ecosystem.
[IMG: JetBrains logo]
[IMG: Google logo]
[IMG: Meta logo]
[IMG: Gradle logo]
[IMG: Touchlab logo]
[IMG: Uber logo]
[IMG: Kotzilla logo]
[IMG: Block logo]
Learn more
[IMG: KotlinConf banner]
[H2] Start using Kotlin today!
Get started
SUB-PAGE (https://kotlinlang.org/multiplatform/) Kotlin Multiplatform – Build Cross-Platform Apps
Kotlin MultiplatformGet started [H1] Kotlin Multiplatform Go cross‑platform without compromising performance, UX, or code qualityAndroidiOSWebDesktopServerGet Started [IMG: https://youtu.be/RJtiFt5pbfs] [IMG: https://youtu.be/5lkZj4v4-ks] [IMG: https://mp.weixin.qq.com/s/yRwkbQxFsRBNZW3Z-S1A8Q] [IMG: https://youtu.be/uCkYZ-PvCmw] [IMG: https://medium.com/@charankumar-hm/our-journey-with-kotlin-multiplatform-from-curiosity-to-production-eeb788b620da] [IMG: https://youtu.be/Qu3jZX8RyFk] [IMG: https://engineering.block.xyz/blog/how-bitkey-uses-cross-platform-development] [IMG: https://youtu.be/GtJBS7B3eyM] [IMG: https://builders.travelperk.com/compose-multiplatform-at-perk-a-pragmatic-look-at-our-journey-so-far-fedd666e9726] [IMG: https://youtu.be/Qu3jZX8RyFk] [IMG: https://youtu.be/jhBmom8z3Qg] [IMG: /case-studies/down-dog/] [IMG: https://netflixtechblog.com/netflix-android-and-ios-studio-apps-kotlin-multiplatform-d6d4d8d25d23] [IMG: https://youtu.be/DcO9psUh4LI] [IMG: https://quizlet.com/blog/shared-code-kotlin-multiplatform] [IMG: https://blog.worldline.tech/2022/01/26/kotlin_multiplatform.html] [IMG: https://touchlab.co/] [IMG: /case-studies/fastwork/] [IMG: https://youtu.be/RJtiFt5pbfs] [IMG: https://youtu.be/5lkZj4v4-ks] [IMG: https://mp.weixin.qq.com/s/yRwkbQxFsRBNZW3Z-S1A8Q] [IMG: https://youtu.be/uCkYZ-PvCmw] [IMG: https://medium.com/@charankumar-hm/our-journey-with-kotlin-multiplatform-from-curiosity-to-production-eeb788b620da] [IMG: https://youtu.be/Qu3jZX8RyFk] [IMG: https://engineering.block.xyz/blog/how-bitkey-uses-cross-platform-development] [IMG: https://youtu.be/GtJBS7B3eyM] [IMG: https://builders.travelperk.com/compose-multiplatform-at-perk-a-pragmatic-look-at-our-journey-so-far-fedd666e9726] [IMG: https://youtu.be/Qu3jZX8RyFk] [IMG: https://youtu.be/jhBmom8z3Qg] [IMG: /case-studies/down-dog/] [IMG: https://netflixtechblog.com/netflix-android-and-ios-studio-apps-kotlin-multiplatform-d6d4d8d25d23] [IMG: https://youtu.be/DcO9psUh4LI] [IMG: https://quizlet.com/blog/shared-code-kotlin-multiplatform] [IMG: https://blog.worldline.tech/2022/01/26/kotlin_multiplatform.html] [IMG: https://touchlab.co/] [IMG: /case-studies/fastwork/] [H2] Choose what to share Both logic and UILogic with native UIPiece of logic [H3] Maximum reuse, faster delivery. Use Kotlin with Compose Multiplatform to share up to 100% of your app code – including UI – while still integrating with native APIs. Reduce dev time, ensure consistent behavior, and ship on Android, iOS, desktop, and web from a single codebase.Get started [IMG: both-logic-ui] [H3] One logic layer, native experience. Write your app's data handling and business logic once with Kotlin Multiplatform while keeping the UI fully native – perfect when UX precision is key and platform fidelity matters.Get started [IMG: logic-native-ui] [H3] Stabilize and sync critical features. Start by sharing an isolated, core part of your business logic – like calculations, validation rules, or authentication workflows – to improve consistency across platforms without requiring major architectural changes.Get started [IMG: piece-of-logic] [H2] Choose where to share AndroidiOSWebDesktopServerEasily make your Android app cross-platform while keeping the majority of your Kotlin code. Many popular libraries and architecture components – including those from Google, such as Room, DataStore, or ViewModel – can be used with Kotlin Multiplatform.Share business logic seamlessly. Make your Kotlin functions available to call from Swift code, and use the full power of iOS APIs in your Kotlin code. Use Compose Multiplatform to create screens that can be embedded in SwiftUI, or build the entire user interface in Kotlin. Easily use platform-specific views like MapKit or AVFoundation straight from your Kotlin code.Share business logic with your web application via Kotlin/JS or take full advantage of code sharing by bringing your app’s UX to the browser using Compose Multiplatform and Kotlin/Wasm.Use Kotlin with Compose Multiplatform to build cross-platform desktop applications with shared business logic and a consistent UI across Windows, macOS, and Linux – hardware-accelerated rendering included! Use the well-established Kotlin and JVM ecosystems to quickly create your next desktop app.Build your server-side applications with a modern JVM language, and use Kotlin Multiplatform to share data models, validation logic, and more. Use a framework like Ktor to get familiar APIs not just on the server, but also on the client, and maximize the amount of code and knowledge you can reuse. [H2] AI-powered code generation Speed up your multiplatform coding with code generation powered by Junie, the coding agent by JetBrains. [H2] Seamless tooling Enjoy smart IDE support with the KMP plugin for IntelliJ IDEA and Android Studio, with common previews, cross-language navigation, refactorings, and debugging across Kotlin and Swift code. [H2] KMP presence among the top 10K apps doubled year over year. [IMG: KMP apps] [H2] Real-world success stories [IMG: duolingo] “One exciting trend for Duolingo is that the more that we use Kotlin Multiplatform internally, the more we find ourselves speeding up in terms of shipping. It turns out after you learn something, you get really good at it. […] Now there's a lot more confidence behind it and we're building up that knowledge.”John RodriguezThe client platform team [IMG: google-workspace] “We consider Kotlin Multiplatform validated in our Google Docs experiment […] we consider the experiment a success […] We’re actually very happy with it”Jason ParachoniakMultiplatform Lead in Google Workspace [IMG: mcdonalds-umain] “After a successful initial test with the payments feature, we expanded Kotlin Multiplatform to our entire McDonald's application. With KMP, we saw fewer crashes and better performance across both platforms after the launch.We transitioned from a separate Android and iOS team to a more unified mobile team.”Varsha SinghProject Manager, McDonald’s app at Umain“Starting from this small of a team, it was a huge speed win for X to be able to use Kotlin Multiplatform and write all of that logic once in one place… When you write a bug—not that I ever do that—you only have to fix it in one place.”Eric DenmanSoftware Engineer at X [IMG: forbes] By sharing over 80% of logic across iOS and Android, Forbes now rolls out new features simultaneously on both platforms, keeping the flexibility to customize features based on the specific platform. This allows the team to innovate and respond to market needs faster.Read the full story [IMG: bilibili] BiliBili (China version) has adopted Kotlin Multiplatform and Compose Multiplatform for the Instant Message feature.Read the full story [IMG: bilibili case] [IMG: h&m] H&M adopted Kotlin Multiplatform to build a shared feature-toggle library for their Android and iOS apps. This approach enabled the team to unify their experimentation logic, reduce duplicate code, and smoothly deliver a production-ready solution across platforms.Read the full story [IMG: duolingo] “One exciting trend for Duolingo is that the more that we use Kotlin Multiplatform internally, the more we find ourselves speeding up in terms of shipping. It turns out after you learn something, you get really good at it. […] Now there's a lot more confidence behind it and we're building up that knowledge.”John RodriguezThe client platform team [IMG: forbes] By sharing over 80% of logic across iOS and Android, Forbes now rolls out new features simultaneously on both platforms, keeping the flexibility to customize features based on the specific platform. This allows the team to innovate and respond to market needs faster.Read the full story [IMG: google-workspace] “We consider Kotlin Multiplatform validated in our Google Docs experiment […] we consider the experiment a success […] We’re actually very happy with it”Jason ParachoniakMultiplatform Lead in Google Workspace [IMG: bilibili] BiliBili (China version) has adopted Kotlin Multiplatform and Compose Multiplatform for the Instant Message feature.Read the full story [IMG: bilibili case] [IMG: mcdonalds-umain] “After a successful initial test with the payments feature, we expanded Kotlin Multiplatform to our entire McDonald's application. With KMP, we saw fewer crashes and better performance across both platforms after the launch.We transitioned from a separate Android and iOS team to a more unified mobile team.”Varsha SinghProject Manager, McDonald’s app at Umain [IMG: h&m] H&M adopted Kotlin Multiplatform to build a shared feature-toggle library for their Android and iOS apps. This approach enabled the team to unify their experimentation logic, reduce duplicate code, and smoothly deliver a production-ready solution across platforms.Read the full story“Starting from this small of a team, it was a huge speed win for X to be able to use Kotlin Multiplatform and write all of that logic once in one place… When you write a bug—not that I ever do that—you only have to fix it in one place.”Eric DenmanSoftware Engineer at XExplore more customer storiesWhat is Kotlin Multiplatform?Kotlin Multiplatform is a technology that allows you to create applications for various platforms and efficiently reuse code across them while retaining the benefits of native programming. Your applications will run on iOS, Android, macOS, Windows, Linux, and more.What’s the difference between Kotlin Multiplatform and Compose Multiplatform?Kotlin Multiplatform is the core technology that lets you share code – such as business logic, data models, networking, and more – across multiple platforms, including Android, iOS, desktop, web, and server. It focuses on code reuse without replacing the native UI unless you want it to.Compose Multiplatform is an optional UI framework built on top of Kotlin Multiplatform. It allows you to share your user interface across platforms using a modern, declarative approach similar to Jetpack Compose on Android. You can use it to build visually appealing, responsive UIs for Android, iOS, desktop, and web from a single codebase.Are Kotlin Multiplatform and Compose Multiplatform ready for production?Yes, Kotlin Multiplatform is production-ready for all supported platforms – Android, iOS, desktop, web, and server. Compose Multiplatform is stable for Android, iOS, and desktop, while the web target is currently in Beta.Where should I choose Kotlin Multiplatform (KMP) over other cross-platform solutions?Choose Kotlin Multiplatform when you need:Incremental adoption: KMP lets you share code selectively – start with a single module or expand to your full app at your own pace.Native performance: KMP compiles to native code for each platform with no bridges or VMs, ensuring high performance and responsiveness.Truly native UI with Compose Multiplatform: Compose Multiplatform respects each platform's UI conventions, offering a native-feeling experience across Android, iOS, desktop, and web.The same tools and architecture as Kotlin and Jetpack Compose: Your skills will transfer easily, reducing onboarding and ramp-up time.Direct access to platform APIs: You can call native APIs directly – with no wrappers needed and zero time wasted waiting for framework updates.Escape hatches for native code: You can write fully native code where needed (e.g. for performance-critical components), without having to abandon the cross-platform approach.Learn more about KMP and Flutter and KMP and React Native.Do I have to rewrite my app to use KMP?No. You can start small by sharing a module or feature and integrating it into your existing app. KMP is designed for gradual adoption, making it easy to incrementally introduce cross-platform code. [H2] Go cross-platform without compromises —try Kotlin Multiplatform today. Get Started
SUB-PAGE (https://kotlinlang.org/docs/kotlin-ai-apps-development-overview.html) Kotlin for AI-powered app development | Kotlin Documentation
[H1] Kotlin for AI-powered app development
Kotlin provides a modern and pragmatic foundation for building AI-powered applications. It can be used across platforms, integrates well with established AI frameworks, and supports common AI development patterns.
[H2] Koog
Koog is an open‑source framework from JetBrains for building AI agents, from simple to complex. It provides multiplatform support, Spring Boot and Ktor integrations, an idiomatic DSL, and production‑ready features out of the box.
[H3] Create a simple agent in a few lines
fun main() {
runBlocking {
val agent = AIAgent(
// Use Anthropic, Google, OpenRouter, or any other provider
executor = simpleOpenAIExecutor(System.getenv("OPENAI_API_KEY")),
systemPrompt = "You are a helpful assistant. Answer user questions concisely.",
llmModel = OpenAIModels.Chat.GPT4o
)
val result = agent.run("Hello! How can you help me?")
println(result)
}
}
[IMG: Get started with Koog]
[H3] Key features
Support for multiplatform development. Multiplatform support enables agentic application development for the JVM, JavaScript, WebAssembly, Android, and iOS.Reliability and fault-tolerance. With built-in retries, Koog lets developers handle failures such as timeouts or tool errors. Agent persistence makes it possible to restore full agent state machines instead of just chat messages.Built-in history compression techniques for long contexts. Koog comes with advanced strategies to compress and manage long-running conversations without extra setup.Enterprise-ready integrations. Koog integrates with popular JVM frameworks like Spring Boot and Ktor.Observability with OpenTelemetry exporters. Koog offers ready-to-use integration with popular observability providers such as W&B Weave and Langfuse for monitoring and debugging AI applications.LLM switching and seamless history adaptation. Koog allows switching to a different LLM with a new set of tools at any point, without losing the existing conversation history. It also enables rerouting between multiple LLM providers, including OpenAI, Anthropic, Google, and others. You can run agents locally with local models through Koog's integration with Ollama.Integration with JVM and Kotlin applications. Koog provides an idiomatic, type-safe DSL specifically for the JVM and Kotlin developers.Model Context Protocol (MCP) integration. Koog enables the use of MCP tools in agents.Knowledge retrieval and memory. With embeddings, ranked document storage, and shared agent memory, Koog itself actively retains knowledge across conversations.Streaming capabilities. Koog lets developers process responses in real-time with streaming support and parallel tool calls.
[H3] Where to start
Explore Koog capabilities in the Overview.Build your first Koog agent with the Quickstart guide.See the latest updates in the Koog release notes.Learn from the examples.
[H2] Model Context Protocol (MCP) Kotlin SDK
The MCP Kotlin SDK is a Kotlin Multiplatform implementation of the Model Context Protocol. The SDK lets developers build AI-powered applications in Kotlin and integrate with LLM surfaces across the JVM, WebAssembly, and iOS.With the MCP Kotlin SDK, you can:Provide context to LLMs in a structured and standardized way by separating context handling from LLM interaction.Build MCP clients that consume resources from existing servers.Create MCP servers that expose prompts, tools, and resources to LLMs.Use standard communication transports such as stdio, SSE, and WebSocket.Handle all MCP protocol messages and lifecycle events.
[H2] Explore other AI-powered application scenarios
Thanks to seamless Java interoperability and Kotlin Multiplatform, you can combine Kotlin with established AI SDKs and frameworks, build backend and desktop/mobile UIs, and adopt patterns like RAG and agent‑based workflows.
[H3] Connect to major model providers
Use Kotlin to connect to major model providers such as OpenAI, Anthropic, Google, and others:OpenAI — official Java SDK for the OpenAI API. It covers responses and chats, images, and audio.Anthropic (Claude) — official Java SDK for the Claude Messages API. It includes modules for Vertex AI and Bedrock integrations.Google AI (Gemini / Vertex AI) — official Java SDK with a single client that switches between Gemini API and Vertex AI.Azure OpenAI — official Java client for the Azure OpenAI Service. It supports chat completions and embeddings.AWS Bedrock — official SDKs to invoke foundation models. It includes the Kotlin SDK and Java SDK for Bedrock and Bedrock Runtime.
[H3] Create RAG pipelines and agent-based apps
Spring AI — multi-provider abstraction for prompts, chats, embeddings, tools and function calling, and vector stores.LangChain4j — JVM toolkit with Kotlin extensions for prompts, tools, retrieval-augmented generation (RAG) pipelines, and agents.
[H2] What's next
Complete the Create a Kotlin app that answers questions with Spring AI tutorial to learn more about using Spring AI with Kotlin in IntelliJ IDEAJoin the Kotlin community to connect with other developers building AI applications with KotlinLearn about Kotlin AI Skills19 May 2026
SUB-PAGE (https://kotlinlang.org/server-side/) Kotlin for server-side
Server-sideGet started [IMG: Server-side graphic] [H1] Modern backend development with Kotlin Kotlin is a perfect fit for building backends on the JVM, including AI-powered services, and is trusted by major tech companies worldwide.SafetyRuntime performanceAccess to the rich JVM ecosystemGreat developer experienceGet startedWho uses Kotlin [IMG: https://blog.jetbrains.com/kotlin/2025/07/case-study-why-kakao-pay-chose-kotlin-for-backend-development/] [IMG: https://medium.com/kingfisher-technology/server-side-kotlin-our-new-default-2d15644f8ed0] [IMG: /case-studies/novatec/] [IMG: /case-studies/faire/] [IMG: /case-studies/doordash/] [IMG: https://medium.com/adobetech/streamlining-server-side-app-development-with-kotlin-be8cf9d8b61a] [IMG: https://www.youtube.com/live/Ar73Axsz2YA?t=2766] [IMG: /case-studies/expedia/] [IMG: https://medium.com/intuit-engineering/what-the-f-p-is-kotlin-7c55e2643b07] [IMG: https://open.spotify.com/episode/3VS5dSUfcsC4fSvzbm2OxV] [IMG: https://open.spotify.com/episode/6gRiIJSWN515tAvZuMAwRR] [IMG: https://open.spotify.com/episode/3XBlKY3x4vVojuay4oSh8g] [IMG: https://open.spotify.com/episode/6oZdJE7XU1GF6Dlir6tP50] [IMG: https://medium.com/insiden26/5-reasons-why-n26-is-moving-to-kotlin-f920b184ab58] [IMG: https://medium.com/memobank/cuddling-with-kotlin-35f4f96931bb] [IMG: https://open.spotify.com/episode/7rcwW7gNFIOrDqy6tgA1HU] [IMG: https://youtu.be/QExksqeNWbY?si=KSy63mxDTh07DYPM] [IMG: https://kotlin.link/articles/Corda-Kotlin.html] [IMG: https://blog.jetbrains.com/kotlin/2025/07/case-study-why-kakao-pay-chose-kotlin-for-backend-development/] [IMG: https://medium.com/kingfisher-technology/server-side-kotlin-our-new-default-2d15644f8ed0] [IMG: /case-studies/novatec/] [IMG: /case-studies/faire/] [IMG: /case-studies/doordash/] [IMG: https://medium.com/adobetech/streamlining-server-side-app-development-with-kotlin-be8cf9d8b61a] [IMG: https://www.youtube.com/live/Ar73Axsz2YA?t=2766] [IMG: /case-studies/expedia/] [IMG: https://medium.com/intuit-engineering/what-the-f-p-is-kotlin-7c55e2643b07] [IMG: https://open.spotify.com/episode/3VS5dSUfcsC4fSvzbm2OxV] [IMG: https://open.spotify.com/episode/6gRiIJSWN515tAvZuMAwRR] [IMG: https://open.spotify.com/episode/3XBlKY3x4vVojuay4oSh8g] [IMG: https://open.spotify.com/episode/6oZdJE7XU1GF6Dlir6tP50] [IMG: https://medium.com/insiden26/5-reasons-why-n26-is-moving-to-kotlin-f920b184ab58] [IMG: https://medium.com/memobank/cuddling-with-kotlin-35f4f96931bb] [IMG: https://open.spotify.com/episode/7rcwW7gNFIOrDqy6tgA1HU] [IMG: https://youtu.be/QExksqeNWbY?si=KSy63mxDTh07DYPM] [IMG: https://kotlin.link/articles/Corda-Kotlin.html] [H2] Safety: fewer production bugs and crashes Null-safetySwitching backend development to Kotlin significantly reduces crashes at runtime.ImmutabilityType-safetyCopy Kotlin codeCopy Kotlin codeCopy Kotlin code [H2] Performance: optimized for high-load [H3] Kotlin coroutines Run 10,000+ lightweight tasks on just a few threads [H3] Inline functions Less overhead as the compiler copies function bodies at the call site [H3] Inline classes Wrap primitives without extra allocations or garbage collector pressure [H3] The JVM Decades of fine-tuning for high throughput and low latencyWatch the full story on Kotlin coroutines from their creator, Roman Elizarov.Watch Adobe’s talk on using coroutines to scale under massive load. [H2] Rich JVM ecosystem for backend development [H3] Seamless Java integration Full interop with Java allows using any JVM library or framework [H3] Enhanced Java frameworks with Kotlin Kotlin takes frameworks that were originally written in Java and enhances them with expressive features, making the API clearer and more intuitive [H3] Gradual Kotlin adoption 100% interoperability between Java and Kotlin allows you to adopt Kotlin incrementally and on your own terms [H3] Rich framework ecosystem Quickly develop backend solutions with the most popular frameworks, including Spring, Hibernate, Ktor, Koog, MCP Kotlin SDK, and others. [IMG: Spring Logo] With its versatile set of features, Spring is the world’s most popular Java framework. When it’s paired with Kotlin, and its concise syntax, the two make the ultimate combo for application development.Read tutorial [IMG: Ktor Logo] Ktor is a multiplatform toolkit built by JetBrains for creating Web applications in Kotlin. It makes use of coroutines for high scalability and offers an easy-to-use API.How to start [IMG: Micronaut Logo] Build your next Kotlin microservice application with ease and test it, too. [IMG: Quarkus Logo] Looking to implement the next cloud-native service with Kotlin? Try Quarkus! [IMG: Vaadin Logo] Create web applications with great-looking UI using Java and Kotlin.KoogA Kotlin-based framework designed to build and run AI agents entirely in idiomatic Kotlin.by JetBrains [IMG: Vert.x Logo] A tool-kit for building reactive applications on the JVM. [IMG: HTTP4K Logo] The HTTP toolkit written in pure Kotlin. Enables the serving and consuming of HTTP services in a functional and consistent way. [IMG: Apache Kafka Logo] Build event-driven, scalable applications effortlessly in Kotlin using Apache Kafka, the industry-standard platform for real-time data streaming.MCP Kotlin SDKA Kotlin SDK for building MCP clients and servers across JVM, WebAssembly, and iOS, with full support for standard transports and protocol events.by JetBrains [H2] How to start – incremental adoption in Java projects [H3] Because of Kotlin’s full interoperability with Java, teams can introduce it gradually Start using Kotlin for your tests.Implement new services from scratch in Kotlin using your existing framework (Spring, Quarkus, Jakarta EE, etc.).Develop new features in Kotlin within existing Java projects.Gradually convert your existing Java codebase to Kotlin. [H2] Use your favorite tools [IMG: IDE support] [H3] IDE support IntelliJ IDEA is the best environment for Kotlin developers, created by JetBrains – the makers of Kotlin. It makes coding easier with features like smart navigation, refactoring, and code analysis. The built-in AI assistant Junie helps by converting Java to clean Kotlin and generating tests quickly.Download [IMG: IntelliJ IDEA logo] [H3] Build tools Use your favorite build tool for building Kotlin programs. Plugins are available for Gradle, Maven, Ant, and Bazel ↗ [IMG: Maven logo] [IMG: Gradle logo] [IMG: Ant logo] [IMG: Bazel logo] [IMG: Build tools] [H2] Additional materials [H3] Build better backends with Kotlin. Check out the Kotlin for Backend playlist for real-world use cases, expert insights, and performance tips. [IMG: Get started graphic] [H2] Get started [IMG: Ktor Logo] [H2] Ktor quick start Ktor is a multiplatform toolkit built by JetBrains for creating Web applications in Kotlin. It makes use of coroutines for high scalability and offers an easy-to-use API. [IMG: Spring Logo] [H2] Go server-side with Spring Use Kotlin with the familiar Spring framework to build powerful enterprise applications.
🧭 Industry Context — common generic-claim patterns in Software, SaaS & Tech Products to weigh the text against
This page presents a snapshot of public data from Kotlin (JetBrains), captured on May 27, 2026, to show how machine logic reads Information Density signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to Kotlin (JetBrains): This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://kotlinlang.org to view the most current version of its content and see directly what this company is about and what it offers.