GPT-5.3 Codex (Xhigh) vs GPT-5.6 Sol (High)

GPT-5.3 Codex (Xhigh) 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-5.3 Codex (Xhigh)Not ranked · benchmark data missing
Intelligence
32.50
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-5.3 Codex (Xhigh)GPT-5.6 Sol (High)Difference
Intelligence (higher is better)32.542.3+30.2% GPT-5.6 Sol (High) is 30.2% more intelligent
Total AA cost (lower is better)Not reported$1,487.34— not comparable
End-to-end time (lower is better)59.96s13.61s−77.3% GPT-5.6 Sol (High) is 77.3% faster
Price per 1M tokens (in / out)$1.75 / $14.0$4.00 / $20.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.3 Codex (Xhigh): what beats itGPT-5.6 Sol (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-5-3-codex/gpt-5-6-sol-high · Markdown: /api/v1/compare/gpt-5-3-codex/gpt-5-6-sol-high?format=md · llms.txt · agent skill