Compare Codestral Embed 2505 from Mistral AI and GPT-5.1-Codex-Max 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.


Codestral Embed 2505 and GPT-5.1-Codex-Max are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Codestral Embed 2505, from Mistral AI, has a 8,192-token context window and is priced at $0.15/M tokens on OpenRouter.
GPT-5.1-Codex-Max, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.