GPT-5 (batch)

OpenAI's general-purpose reasoning model with a 400k token context window, released in August 2025 and since superseded by GPT-5.5.

Strengths

Handles complex reasoning, code quality, and instruction-following tasks with step-by-step problem decomposition across a large context window.

Best for

General-purpose workloads requiring reasoning and accuracy over longer documents or conversations, where context window size matters more than the latest model iteration.

Limitations

Superseded by GPT-5.5, so new deployments should evaluate the newer model; use GPT-5 Mini or Chat variants if you need smaller and faster alternatives within the same release cycle.