---
id: "openai/gpt-5.2-chat"
also: ["openai/gpt-5.2-chat-20251211", "requesty/openai/gpt-5.2-chat"]
cheapest_list_usd_per_m: "1.575 in, 12.6 out, at openai on requesty"
cheapest_effective_usd_per_m: "1.141 in, 12.6 out, at openai on requesty"
context: 128000
max_output: 32000
input: ["file", "image", "text"]
output: ["text"]
released: "2025-12-10"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["max_completion_tokens", "response_format", "seed", "structured_outputs", "tool_choice", "tools", "verbosity"]
endpoints: 2
gateways: "openrouter (1), requesty (1)"
no_training: 2
trains: 0
retains_prompts: 1
---
# OpenAI: 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...