GPT 5.2 Pro
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OpenAI | 400,000 token context | $21.00/M input, $168.00/M output. 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.
Guides for this model
Open weights vs open source vs API-only: what you are actually allowed to do
How to choose an AI model in October 2026: the closed source news, then the open weights worth downloading
The 10 cheapest ChatGPT alternatives in 2026: free local models, free tiers and flat-rate plans
Captain's notes
Notes from 2026-10-13
GPT-5.2 Pro is OpenAI's most capable model, built for high-stakes work where accuracy, careful reasoning, and long-document handling matter most. It improves on GPT-5 Pro in agentic coding, hallucination reduction, and sycophancy, and it responds to intent signals like 'think hard about this.' At $21 per million input tokens and $168 per million output, it is priced for professional and enterprise use, not casual experimentation.
Known for
- Agentic coding with meaningful gains over its predecessor
- 400,000-token context for large codebases or long documents
- Reduced hallucination and sycophancy compared to GPT-5 Pro
- Responds to user-specified reasoning intent at inference time
- Strong instruction following in health and high-stakes writing tasks
Watch out for
- Output costs $168 per million tokens — long agentic runs will produce large bills quickly.
- Closed weights, API-only: no local deployment, no fine-tuning on your own hardware.
- At this price tier, you should be certain you need the top of the range before committing.
Prompts to try
Audit a complex codebase
Here is a large Python service with multiple modules. Review the architecture for correctness, identify any logic errors or race conditions, suggest concrete refactors, and explain your reasoning step by step. Think hard about edge cases before you respond.
Reason through a hard decision
A hospital is deciding whether to adopt a new triage algorithm. The algorithm reduces average wait time by 12% but increases the rate of missed critical cases by 0.3%. Walk through the ethical, operational, and statistical considerations a decision-maker should weigh, and give a reasoned recommendation.
Analyse a long document
I am attaching a 200-page regulatory filing. Identify the five most material risk disclosures, explain what each one means in plain language, flag any internal inconsistencies you notice, and tell me which risks are standard boilerplate versus genuinely specific to this company.
Compare with
- gpt-oss-120bOpen-weights model131,072 token context · $0.15/M input, $0.60/M output
- gpt-oss-20bOpen-weights model131,072 token context · $0.02/M input, $0.09/M output
- GPT-6 LunaAPI-only model1,050,000 token context · $0.10/M input, $0.50/M output
- GPT-5.6 LunaAPI-only model1,050,000 token context · $0.20/M input, $1.20/M output
More text models from openai
Questions people ask
- Can I run GPT-5.2 Pro locally?
- No. OpenAI has not released weights for this model; it is available through the API only.
- What does GPT-5.2 Pro cost, and what is its context window?
- It costs $21.00 per million input tokens and $168.00 per million output tokens, with a 400,000-token context window.
- How is GPT-5.2 Pro different from GPT-5 Pro?
- OpenAI says it offers major improvements in agentic coding and long-context performance, with reductions in hallucination and sycophancy, plus support for test-time routing and user-specified reasoning intent.
Captain's verdictThe most capable model OpenAI has published, but the output price means you should have a genuine need before you reach for it.
Captain writes these notes from the model's own description and model card. Prices and context sizes are the provider's at the time of writing and can change.
Ranking badge
Updated Oct 22, 2026
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GPT 5.2 Pro is a text model for the Text / LLM family listed on ModelTrends.ai, a read-only catalog of open source AI image, video and text models. Compare it with other Text / LLM models and check its heat score to see how it is trending.
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