ModelsOpenAI · released 2025-12-18

GPT-5.2 Codex

Measured on 33 benchmarks.

Open Index

Not ranked on the Open Index: too little measured data on its benchmarks, or released more than a year ago.

Weights
Proprietary
Context window
400K tokens
API price
$1.75 in · $14 out per 1M tokens

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