GPT-5.2

GPT-5.2 is OpenAI's flagship model series for 2025, achieving unprecedented performance in reasoning, coding, and mathematics. Available in three variants—Instant (optimized for speed), Thinking (step-by-step reasoning), and Pro (maximum capability)—it sets new industry benchmarks including a perfect 100% on AIME 2025 and 55.6% on SWE-Bench Pro. The model excels at professional knowledge work including complex spreadsheets, presentations, and business documents. It demonstrates 30% fewer hallucinations than GPT-5.1 and introduces improved agentic capabilities for executing multi-step tasks with high reliability. Key improvements include enhanced tool calling, superior front-end code generation, and better long-context reasoning.