GPT-5.2 Pro is OpenAI’s most advanced model, offering major improvements in agentic coding and long context performance over GPT-5 Pro. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy in high-stakes use cases. It supports test-time routing features and advanced prompt understanding, including user-specified intent like "think hard about this." Improvements include reductions in hallucination, sycophancy, and better performance in coding, writing, and health-related tasks.
With CoreAI, you can start chatting with OpenAI: GPT-5.2 Pro instantly — no separate subscription needed. CoreAI bundles access to OpenAI: GPT-5.2 Pro along with 300+ other AI models from OpenAI and other providers like OpenAI, Anthropic, Google, Meta, and more.
Chat with OpenAI: GPT-5.2 Pro and 300+ other AI models — all in one app.