Kimi K2 Thinking vs GPT-5.1

Compare Kimi K2 Thinking from moonshotai and GPT-5.1 from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

Kimi K2 Thinking vs GPT-5.1: side-by-side summary

Kimi K2 Thinking and GPT-5.1 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Kimi K2 Thinking, from moonshotai, has a 262,144-token context window and is priced at $0.60/M tokens input, $2.50/M tokens output on OpenRouter.

GPT-5.1, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.

Context window: Kimi K2 Thinking: 262,144 tokens
GPT-5.1: 400,000 tokens
Price: Kimi K2 Thinking: $0.60/M tokens input, $2.50/M tokens output
GPT-5.1: $1.25/M tokens input, $10/M tokens output
Provided by: Kimi K2 Thinking: moonshotai
GPT-5.1: OpenAI

Kimi K2 Thinking vs GPT-5.1

Compare Kimi K2 Thinking from moonshotai and GPT-5.1 from OpenAI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.