Gemini 3.1 Ultra vs Llama 3.1 8B

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

Gemini 3.1 Ultra
Google
AI Mastery Index92.5
LMSYS Arena1320
Technical (MMLU-Pro)92.5%
Cost per 1M Tokens$20
Llama 3.1 8B
Meta
AI Mastery Index75
LMSYS Arena1170
Technical (MMLU-Pro)73%
Cost per 1M Tokens$0

Architect's Verdict

When comparing Gemini 3.1 Ultra and Llama 3.1 8B, Gemini 3.1 Ultra edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Llama 3.1 8B offers a more economical API at $0 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.