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openai/gpt-5-2-chat
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GPT-5.2 Chat

GPT-5.2 Chat (AKA Instant) is the fast, lightweight member of the 5.2 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on harder queries, improving accuracy on math, coding, and multi-step tasks without slowing down typical conversations. The model is warmer and more conversational by default, with better instruction following and more stable short-form reasoning. GPT-5.2 Chat is designed for high-throughput, interactive workloads where responsiveness and consistency matter more than deep deliberation.

12/10/2025
128,000 tokens
Specifications

Modalities

Input
file
image
text
Output
text

Supported Parameters

max_tokens
response_format
seed
structured_outputs
tool_choice
tools

Max Output Tokens

16,384