Mistral Medium 3.5 vs Grok 4.5: side-by-side summary

Mistral Medium 3.5 and Grok 4.5 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mistral Medium 3.5, from Mistral AI, has a 262,144-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output on OpenRouter.

Grok 4.5, from SpaceXAI, has a 500,000-token context window and is priced at $2/M tokens input, $6/M tokens output on OpenRouter.

Context window

• Mistral Medium 3.5: 262,144 tokens
• Grok 4.5: 500,000 tokens

Price

• Mistral Medium 3.5: $1.50/M tokens input, $7.50/M tokens output
• Grok 4.5: $2/M tokens input, $6/M tokens output

Provided by

• Mistral Medium 3.5: Mistral AI
• Grok 4.5: SpaceXAI

• Mistral Medium 3.5 model details, providers and pricing
• Grok 4.5 model details, providers and pricing