Our most intelligent coding model optimized for long-horizon, agentic coding tasks. Our most intelligent coding model optimized for long-horizon, agentic coding tasks. GPT-5.2-Codex is an upgraded version of GPT-5.2 optimized for agentic coding tasks in Codex or similar environments.
GPT-5.2-Codex supports 128,000 max output tokens Aug 31, 2025 knowledge cutoff Pricing Pricing is based on the number of tokens used, or other metrics based on the model type. For tool-specific models, like search and computer use, there’s a fee per tool call. See details in the Endpoints Chat Completions v1/chat/completions Fine-tuning v1/fine-tuning Image generation v1/images/generations Image edit v1/images/edits Speech generation v1/audio/speech Transcription v1/audio/transcriptions Translation v1/audio/translations Completions (legacy) v1/completions Features Function calling Supported Structured outputs Supported Distillation Not supported Predicted outputs Not supported Snapshots Snapshots let you lock in a specific version of the model so that performance and behavior remain consistent. Below is a list of all available snapshots and aliases for GPT-5.2-Codex . Rate limits Rate limits ensure fair and reliable access to the API by placing specific caps on requests or tokens used within a given time period. Your usage tier determines how high these limits are set and automatically increases as you send more requests and spend more on the API.
low, medium, high, and xhigh reasoning effort settings.
If you want to learn more about prompting GPT-5.2-Codex, refer to our dedicated guide.Tier RPM TPM Batch queue limit Free Not supported Tier 1 500 500,000 1,500,000 Tier 2 5,000 1,000,000 3,000,000 Tier 3 5,000 2,000,000 100,000,000 Tier 4 10,000 4,000,000 200,000,000 Tier 5 15,000 40,000,000 15,000,000,000