OpenAI: GPT-5.2 Pro API Price, Cost Calculator & Specs

At $21/1M input and $168/1M output, GPT-5.2 Pro is 12x more expensive than GPT-5.2—it's not a product, it's a last-resort premium tier. The pricing puts it firmly out of reach for any customer-facing SaaS unless you're charging enterprise rates for high-stakes decision support. This model exists for one thing: when the cost of failure far exceeds the API bill, and you need every ounce of reasoning accuracy OpenAI can deliver.

Best For:

High-Stakes Document Review: When summarizing legal contracts, medical reports, or financial filings where a hallucination could trigger liability, the extra cost is insurance against catastrophic errors.

Enterprise-Grade Code Auditing: Complex security audits or compliance checks across large codebases where finding one subtle vulnerability justifies dozens of dollars in API calls.

Multi-Step Agentic Workflows with Human-in-the-Loop: Systems where the AI makes recommendations that humans validate before action—the Pro model's reduced hallucination and sycophancy means fewer false confident answers slipping through.