GPT-5.3 Codex (xhigh)

OpenAIclosedtextvision

127.2Speed (tok/s) · P70 · measured
$1.869Blended $/M tok · P16 · derived
32.5Intelligence index · P82 · measured
505 msTTFT · measured
400kContext · list

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Comparisons (measured vs nearest neighbors): Gemini 3.5 Flash (high) · GPT-5.6 Luna (high)

Released 2026-02-05 · catalog data 2026-09-14 · field-level provenance shown per metric above (measured / derived / list, from the catalog sources map); percentiles computed across the 329-model catalog at generation time. Numbers are catalog-sourced and labeled as such — lab-measured lanes stay separate by design. Generated page — do not hand-edit.

Model names are trademarks of their respective owners. Not affiliated with, endorsed by, or sponsored by any provider or measurement service. Sources, attribution & corrections.