GPT-5.2

GPT-5.2 is OpenAI's general-purpose reasoning model with a 400k token context window, released in December 2025 as the latest generation for real-time API inference.

Strengths

Handles extended context and complex reasoning tasks across a wide range of domains with the reasoning capabilities of the GPT-5.2 generation.

Best for

Real-time applications requiring general-purpose reasoning on large documents or multi-step problems, when you need faster response times than batch processing provides.

Limitations

For coding-specific tasks, GPT-5.2-Codex is optimized; for batch workloads where latency is not critical, GPT-5.2 (batch) may offer better throughput; GPT-5.2 Pro offers frontier-grade reasoning if maximum capability is required.