This is the most advanced frontier model so far, designed specifically for real-world agentic workflows, complex reasoning, and production-grade use cases.

GPT-5.2 is built to handle tasks where previous models struggled at scale: long documents, ambiguous data, multi-step tool usage, and demanding coding workflows. If you are running serious workloads, this is a meaningful step forward.

Why GPT-5.2 matters

Best long-context reasoning so far

GPT-5.2 sets a new state of the art in long-context understanding. On OpenAI’s MRCRv2 benchmark, it outperforms all previous models. Companies like Notion, Box, Databricks, and Hex report significantly stronger reasoning on complex, data-heavy, and ambiguous tasks.

More reliable agent and tool execution

The model leads on Tool Decathlon and outperforms competitors on τ²-Bench Telecom, both focused on long-horizon tool usage. According to teams at Triple Whale and Zoom, GPT-5.2 delivers noticeably more stable and predictable agent behavior thanks to improved tool calling.

The strongest vision model to date

GPT-5.2 reduces chart reasoning and UI understanding errors by more than 50%. Its improved spatial reasoning makes it far more reliable for analyzing dashboards, application interfaces, diagrams, and complex visual layouts.

Top-tier coding performance

GPT-5.2 leads on SWE-Bench Pro, a benchmark for advanced software engineering tasks. It shows clear gains in front-end UI generation, debugging, refactoring, and shipping production-ready fixes.

API availability and reasoning control

GPT-5.2 is available through the Responses API and Chat Completions API. The model dynamically adjusts its reasoning depth based on task complexity, and developers now have explicit control over reasoning effort with the following levels:

  • none
  • low
  • medium
  • high
  • xhigh (introduced for the most complex workloads)

This makes it easier to balance cost, latency, and reasoning power depending on the task.

Pricing and access

GPT-5.2 is priced approximately 40% higher than GPT-5 and GPT-5.1:

  • $1.75 per 1M input tokens
  • $14 per 1M output tokens
  • 90% discount on cached inputs

The model is available on Priority Processing and Flex Processing plans and supports usage via the Batch API. Full details are available on the OpenAI API pricing page.

Getting started

OpenAI has published updated prompting guidance and improved the Prompt Optimizer tool to help developers get the most out of GPT-5.2 from day one.

If you are building agents, data-driven products, or production systems that depend on reliability and depth, GPT-5.2 is clearly the new baseline to evaluate against.