GPT-5.2 Pro
Summary
GPT-5.2 Pro is a proprietary language model from OpenAI, released on 11 Dec 2025. It accepts text and images and generates text, with a 400K-token context window and up to 128K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $21 per million input tokens and $168 per million output tokens (OpenAI API), across 3 providers we track.
Higher-accuracy GPT-5.2 variant for tougher reasoning and review workflows
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | OpenAI |
|---|---|
| Release date | 11 Dec 2025 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 400K (400,000 tokens) [models.dev] |
| Max output | 128K tokens [models.dev] |
| Knowledge cutoff | 31 Aug 2025 [models.dev] |
| Input | Text and images [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | No [models.dev] |
GPT-5.2 Pro API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenAI API gpt-5.2-pro | $21 | $168 | – | 400K | models.dev, 4 Oct 2026 |
| OpenRouter openai/gpt-5.2-pro | $21 | $168 | – | 400K | OpenRouter, 4 Oct 2026 |
| Vercel AI Gateway openai/gpt-5.2-pro | $21 | $168 | – | 400K | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of GPT-5.2 Pro?
GPT-5.2 Pro has a context window of 400,000 tokens (400K) and can generate up to 128,000 tokens in a single response, according to models.dev.
How much does the GPT-5.2 Pro API cost?
Through OpenAI API, GPT-5.2 Pro costs $21 per million input tokens and $168 per million output tokens. Prices last verified 4 Oct 2026.
Is GPT-5.2 Pro open source?
No. GPT-5.2 Pro is a proprietary model; OpenAI has not released its weights. It is available through APIs including OpenAI API, OpenRouter, Vercel AI Gateway.
When was GPT-5.2 Pro released?
OpenAI released GPT-5.2 Pro on 11 Dec 2025, according to models.dev.
Which providers offer GPT-5.2 Pro?
We track GPT-5.2 Pro on 3 providers: OpenAI API, OpenRouter, Vercel AI Gateway.
Change history
No changes detected since we started tracking this model. We re-check every source daily.