Mistral Medium 3.1 vs GPT-5 Mini: side-by-side summary

Mistral Medium 3.1 and GPT-5 Mini are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mistral Medium 3.1, from Mistral AI, has a 131,072-token context window and is priced at $0.40/M tokens input, $2/M tokens output on OpenRouter.

GPT-5 Mini, from OpenAI, has a 400,000-token context window and is priced at $0.25/M tokens input, $2/M tokens output on OpenRouter.

Context window

• Mistral Medium 3.1: 131,072 tokens
• GPT-5 Mini: 400,000 tokens

Price

• Mistral Medium 3.1: $0.40/M tokens input, $2/M tokens output
• GPT-5 Mini: $0.25/M tokens input, $2/M tokens output

Provided by

• Mistral Medium 3.1: Mistral AI
• GPT-5 Mini: OpenAI

• Mistral Medium 3.1 model details, providers and pricing
• GPT-5 Mini model details, providers and pricing