Key Features

State-of-the-art performance on professional knowledge-work benchmarks such as GDPval, where GPT-5.2 Thinking matches or exceeds expert human outputs across 44 occupations for well-specified tasks like presentations and spreadsheets.
Significant improvements in long-context reasoning, achieving near-perfect accuracy on challenging long-document evaluations like the 4-needle MRCR variant at context lengths up to 256k tokens.
Stronger software engineering capabilities, with leading scores on SWE-Bench Pro and SWE-bench Verified, enabling more reliable debugging, refactoring, and end-to-end implementation of production-quality code across multiple programming languages.
Enhanced vision understanding that cuts error rates roughly in half on chart reasoning and software interface benchmarks, improving performance on dashboards, diagrams, product screenshots, and complex visual layouts.
Best-in-class tool-calling and agent orchestration, reaching 98.7% on Tau2-bench Telecom and supporting robust multi-step workflows like customer service resolution, data retrieval, and complex analysis across many tools.
High performance in advanced science and mathematics, including top-tier scores on GPQA Diamond and FrontierMath, as well as perfect or near-perfect results on competitions like AIME 2025 and HMMT February 2025.
Multiple specialized variants—Instant, Thinking, and Pro—each tuned for different combinations of speed, depth of reasoning, and reliability, and accessible both in ChatGPT paid tiers and through the API.
Enterprise-ready safety and reliability improvements, including reduced hallucination rates compared to GPT-5.1, stronger handling of sensitive mental-health-related prompts, and infrastructure partnerships with Microsoft Azure and NVIDIA for scalable, robust deployment.

For business and technical teams, GPT-5.2 substantially upgrades day-to-day workflows like building spreadsheets and financial models, drafting complex presentations, performing deep document analysis over hundreds of thousands of tokens, and orchestrating multi-step projects that rely on tools and APIs. GPT-5.2 Thinking, in particular, is optimized for structured, long-horizon reasoning: it can integrate information spread across large reports, contracts, research papers, or multi-file codebases, and then generate polished outputs such as models, slide decks, and decision memos with higher coherence and fewer factual errors than GPT-5.1. Early adopters in domains such as investment banking, data science, and operations report that it reliably handles tasks like three-statement financial models, leveraged buyout models, agentic data science workflows, and complex customer-support resolution flows that previously required multiple tools or human handoffs.


GPT-5.2 also delivers major gains for software engineering, vision, and tool-based agents, making it a strong foundation for coding copilots, autonomous agents, and enterprise copilots embedded in existing products. On SWE-Bench Pro and SWE-bench Verified, GPT-5.2 Thinking achieves leading scores, translating into more dependable debugging, feature implementation, refactoring of large codebases, and generation of complex front-end interfaces, including rich 3D UIs, from a single prompt. Its vision capabilities reduce error rates on chart reasoning and UI understanding, while tool-calling performance reaches 98.7% accuracy on long, multi-turn agent benchmarks like Tau2-bench Telecom, enabling single “mega-agents” with large toolsets to execute end-to-end workflows more robustly than prior multi-agent systems.

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