GPT-5.2-pro
gpt-5.2-pro
OpenAI · chat · api · seen 10m ago
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Context
400K
Max output
128K
Input $/1M
$10.50
Output $/1M
$84.00
Modalities
text
Released
10 Dec 2025
AI summary
● machine-written
OpenAI releases GPT-5.2-pro with 400K context window
GPT-5.2-pro is a chat model available via API from OpenAI, released December 10, 2025. It supports a 400K token context window and 128K maximum output tokens. The model is available in general availability status.
What's new
- Released December 10, 2025
- 400K token context window
- 128K maximum output tokens
- Supports reasoning with multiple effort levels
Best for
Professional coding tasksLong-context applicationsHigh-accuracy reasoning workloads