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 successor to GPT-5.1.

Strengths

Delivers broad capability across reasoning, coding, and instruction adherence with the extended 400k token context for handling large documents and complex multi-step problems.

Best for

General-purpose applications that benefit from strong reasoning and long-context understanding without specialization constraints.

Limitations

For coding-heavy workloads, the specialized GPT-5.2-Codex variant or GPT-5.1-Codex models may be better suited; for adaptive reasoning, GPT-5.2 Pro offers additional capabilities.