MiniMax M2 vs GPT-5.1-Codex-Max: side-by-side summary

MiniMax M2 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.

MiniMax M2, from MiniMax, has a 204,800-token context window and is priced at $0.255/M tokens input, $1.02/M tokens output 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.

Context window

• MiniMax M2: 204,800 tokens
• GPT-5.1-Codex-Max: 400,000 tokens

Price

• MiniMax M2: $0.255/M tokens input, $1.02/M tokens output
• GPT-5.1-Codex-Max: $1.25/M tokens input, $10/M tokens output

Provided by

• MiniMax M2: MiniMax
• GPT-5.1-Codex-Max: OpenAI

• MiniMax M2 model details, providers and pricing
• GPT-5.1-Codex-Max model details, providers and pricing