Compare MiniMax M2-her from MiniMax and GPT-5.1-Codex 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.
MiniMax M2-her and GPT-5.1-Codex are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
MiniMax M2-her, from MiniMax, has a 65,536-token context window and is priced at $0.30/M tokens input, $1.20/M tokens output on OpenRouter.
GPT-5.1-Codex, from OpenAI, has a 400,000-token context window and is priced at $1.25/M tokens input, $10/M tokens output on OpenRouter.