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

At $1.75/1M input and $14/1M output, GPT-5.2 Chat is priced identically to GPT-5.2 but trades a smaller context window (128K vs 400K) for faster response times. It's optimized for interactive, high-throughput workloads where latency matters more than deep reasoning. The "warmer, more conversational" tone and better short-form reasoning make it ideal for customer-facing chat interfaces—but for document analysis or complex multi-step tasks, spring for the full GPT-5.2.

Best For:

Real-Time Chatbots: Customer support, sales assistants, or any chatbot where sub-second response time directly impacts user experience and conversion rates.

Multi-Turn Conversations with Moderate Complexity: The sweet spot for 5-15 turn conversations where you need consistent instruction following but don't require deep deliberation on each turn.

High-Volume API Workloads: When you're processing thousands of requests per hour and every millisecond of latency adds up to meaningful cost savings at scale.