Sharkbench

Benchmarking programming languages and web frameworks

Ktor (Kotlin)

Ktor is a framework for building asynchronous servers and clients in connected systems using the Kotlin programming language. It is designed to be flexible and easy to use, allowing developers to create highly scalable and robust applications. Ktor leverages Kotlin's coroutines for handling asynchronous operations elegantly.

This benchmark tests how fast a framework can perform concurrent HTTP requests, I/O operations, and JSON de/serialization.

OS: LinuxCPU: Intel Core Ultra 5 325Last Updated: 2026-10-14

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
Kotlin (Temurin v25) / Ktor v3 (Netty)	1743	5.3 ms	6.35 %	242.4 MB	36.00 s
Kotlin (Temurin v21) / Ktor v3 (Netty)	1742	5.3 ms	6.28 %	237.2 MB	35.92 s
Kotlin (Native v2.4) / Ktor v3 (CIO-Native)	107	114.0 ms	10.42 %	435.3 MB	113.15 s

About Kotlin

Paradigm

Object-Oriented, Functional, Imperative

Execution

JIT, AOT

Typing

Static

Null Safety

YES

Memory Management

Garbage Collection

Kotlin is a modern programming language developed by JetBrains and officially supported by Google for Android development. It is fully interoperable with Java while addressing many of its limitations through features like null safety and extension functions. Kotlin has rapidly gained popularity for mobile development and is growing in server-side applications.

Kotlin web frameworks

How does Ktor compare to other Kotlin frameworks?

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
Kotlin (Temurin) / Ktor (Netty)	1743	5.3 ms	6.35 %	242.4 MB	36.00 s
Kotlin (Native) / Ktor (CIO-Native)	107	114.0 ms	10.42 %	435.3 MB	113.15 s

Popular web frameworks

How does Ktor compare to other popular frameworks?

MedianP99

Framework	Requests per second How many requests per second can the framework handle? (higher is better)	Latency How long does it take to process a request? (lower is better)	Stability How stable is the framework under load? (median / P99 latency) (higher is better)	Memory How much memory (RAM) does the framework use? (lower is better)	Build Time Fetching dependencies + compiling, excluding SDK setup (lower is better)
Rust / Axum	26670	1.2 ms	74.13 %	16.5 MB	26.69 s
C# (.NET) / ASP.NET Core	17041	1.5 ms	23.04 %	101.8 MB	6.09 s
JavaScript (Node.js) / Express	15270	2.0 ms	29.45 %	228.4 MB	4.92 s
Java (Temurin) / Spring Boot (MVC)	2962	1.6 ms	1.86 %	286.4 MB	37.73 s
Kotlin (Temurin) / Ktor (Netty)	1743	5.3 ms	6.35 %	242.4 MB	36.00 s
Go / Gin	1640	3.4 ms	3.65 %	23.1 MB	32.20 s
Python / FastAPI (Uvicorn)	792	32.9 ms	20.81 %	63.3 MB	8.55 s
Python / Flask (Gunicorn)	320	99.9 ms	56.36 %	110.2 MB	8.94 s
Python / Django (Gunicorn)	279	103.8 ms	57.16 %	151.9 MB	10.29 s
Kotlin (Native) / Ktor (CIO-Native)	107	114.0 ms	10.42 %	435.3 MB	113.15 s
PHP / Laravel	92	319.0 ms	80.90 %	80.4 MB	95.22 s