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

At $1.75/1M input and $14/1M output, GPT-5.2 carries a 40% price premium over GPT-5.1 while delivering stronger agentic capabilities and adaptive reasoning. The 400K context window and dynamic computation allocation make it ideal for complex, multi-turn workflows where cheaper models hit their ceiling—but this pricing puts it firmly in the "specialist" category, not your default API. For most SaaS apps, route routine queries to GPT-5.1 or GPT-5 Mini, and reserve GPT-5.2 for tasks requiring its unique reasoning depth and tool-use reliability.

Best For:

Agentic Workflow Orchestration: Use it when your application needs to chain multiple tools and make dynamic decisions based on intermediate results—where reliability in tool calling directly impacts user trust.

Long-Document Analysis (200K+ tokens): The full 400K context window shines when processing entire codebases, legal contracts, or research papers in a single pass, maintaining coherence that breaks down with chunking approaches.

Complex Multi-Step Coding Tasks: When generating a complete feature module or refactoring across multiple files, GPT-5.2's improved reasoning and tool-use reliability reduce the back-and-forth iterations that add up on your API bill.