GPT-5.2 Pro
GPT-5.2 Pro is the higher-compute companion to GPT-5.2. It uses the Responses API and remains separately listed from newer Pro releases.
A Pro release has its own limits and price
The documented context is 400,000 tokens with up to 128,000 output tokens. Supported reasoning levels are medium, high and xhigh. Difficult requests can run for several minutes, and OpenAI directs applications to background mode when needed.GPT-5.2 Pro official model documentation
Compare difficult outcomes rather than routine questions
Practical guidance. Use tasks where the quality difference matters enough to review closely. Record whether the model resolves conflicting evidence and identifies assumptions. Keep waiting and completion states clear for the person who requested the work.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Access | API |
| Model identifiers | gpt-5.2-progpt-5.2-pro-2025-12-11 |
| Context window | 400,000 tokens Published model context; input and output share this budget GPT-5.2 Pro official model documentation |
| Maximum output | 128,000 tokens Published maximum output; bounded by the remaining context GPT-5.2 Pro official model documentation |
| Input price | 21 USD per million tokens Standard text processing at the reviewed date GPT-5.2 Pro official model documentation |
| Output price | 168 USD per million tokens Standard text processing at the reviewed date GPT-5.2 Pro official model documentation |
| Input and output | text, image in; text outGPT-5.2 Pro official model documentation |
| API routes | Responses (v1/responses)GPT-5.2 Pro official model documentation |
Related models
GPT-5.2 is an earlier professional-work release that remains available in the catalog.
Launch date not confirmedAPI