GPT-5.2

Released December 11, 2025, GPT-5.2 addresses enterprise and developer workflows with three specialized variants: Instant (fast responses), Thinking (multi-step reasoning with configurable effort), and Pro (maximum compute allocation for highest-stakes work). The model features a 400k context window, 128k output capacity, and addresses real-world gaps in long-context retrieval, agentic coding, and visual reasoning. Pricing starts at $1.75/1M input and $14/1M output tokens for Instant and Thinking, scaling to $21/$168 for Pro. While performance on science and coding benchmarks exceeds competitors, reliance on reasoning overhead increases latency for simple queries.