OpenAI: gpt-5.2-chat-latest API
A dynamic snapshot of the GPT-5.2 series released in December 2025. Featuring "Adaptive Reasoning," it automatically switches between Instant and Thinking modes based on task complexity. It offers a warmer, more conversational tone, alongside breakthrough performance in long-document reasoning and agentic workflows.
- Context window: 128,000 tokens
- Max output: 16,384 tokens
- Input: text, image
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2025-12-11
- Knowledge cutoff: 2025-08-31
Frequently Asked Questions
What is the context window of gpt-5.2-chat-latest?
gpt-5.2-chat-latest supports a context window of up to 128,000 tokens.
Does gpt-5.2-chat-latest support function calling?
Yes. gpt-5.2-chat-latest supports tool / function calling.
Does gpt-5.2-chat-latest support reasoning?
Yes. gpt-5.2-chat-latest is a reasoning-capable model.
What is the knowledge cutoff of gpt-5.2-chat-latest?
The knowledge cutoff of gpt-5.2-chat-latest is 2025-08-31.