Mistral Large 3 vs Gemini 3.1 Ultra

Head-to-head technical comparison of intelligence, capabilities, and API pricing.

Mistral Large 3

Mistral

AI Mastery Index89.2

LMSYS Arena1250

Technical (MMLU-Pro)89.2%

Cost per 1M Tokens$0.5

Gemini 3.1 Ultra

Google

AI Mastery Index92.5

LMSYS Arena1320

Technical (MMLU-Pro)92.5%

Cost per 1M Tokens$20

Architect's Verdict

When comparing Mistral Large 3 and Gemini 3.1 Ultra, Gemini 3.1 Ultra edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Mistral Large 3 offers a more economical API at $0.5 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.