GPT-5.1 (High) vs Llama 3.1 Instruct 405B

GPT-5.1 (High) vs Llama 3.1 Instruct 405B. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.1 (High)Not ranked · benchmark data missing
Intelligence
24.70
Total cost
-
MetaLlama 3.1 Instruct 405BNot ranked · benchmark data missing
Intelligence
7.30
Total cost
-
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricGPT-5.1 (High)Llama 3.1 Instruct 405BDifference
Intelligence (higher is better)24.77.3−70.4% Llama 3.1 Instruct 40… is 70.4% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)32.30sNot reported— not comparable
Price per 1M tokens (in / out)$1.25 / $10.0—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.1 (High): what beats itLlama 3.1 Instruct 405B: what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-1/llama-3-1-instruct-405b · Markdown: /api/v1/compare/gpt-5-1/llama-3-1-instruct-405b?format=md · llms.txt · agent skill