GPT-5.1 Codex (High) vs GPT-6 Astra (High)

GPT-5.1 Codex (High) vs GPT-6 Astra (High). 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 Codex (High)Not ranked · benchmark data missing
Intelligence
23.70
Total cost
-
OpenAIGPT-6 Astra (High)Off the frontier
Intelligence
50.90
Total cost
$2925
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 Codex (High)GPT-6 Astra (High)Difference
Intelligence (higher is better)23.750.9+114.8% GPT-6 Astra (High) is 2.1× more intelligent
Total AA cost (lower is better)Not reported$2,925.01— not comparable
End-to-end time (lower is better)11.52s49.71s+331.5% GPT-6 Astra (High) is 331.5% slower
Price per 1M tokens (in / out)$1.25 / $10.0$10.0 / $50.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.1 Codex (High): what beats itGPT-6 Astra (High): 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-codex/gpt-6-astra-high · Markdown: /api/v1/compare/gpt-5-1-codex/gpt-6-astra-high?format=md · llms.txt · agent skill