GPT-5.1 Codex (High) vs GPT-5.6 Sol (High)

GPT-5.1 Codex (High) vs GPT-5.6 Sol (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-5.6 Sol (High)Off the frontier
Intelligence
42.30
Total cost
$1487
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-5.6 Sol (High)Difference
Intelligence (higher is better)23.742.3+78.5% GPT-5.6 Sol (High) is 78.5% more intelligent
Total AA cost (lower is better)Not reported$1,487.34— not comparable
End-to-end time (lower is better)12.93s13.61s+5.3% GPT-5.6 Sol (High) is 5.3% slower
Price per 1M tokens (in / out)$1.25 / $10.0$4.00 / $20.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.1 Codex (High): what beats itGPT-5.6 Sol (High): what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-1-codex/gpt-5-6-sol-high · Markdown: /api/v1/compare/gpt-5-1-codex/gpt-5-6-sol-high?format=md · llms.txt · agent skill