GPT-5 Mini

OpenAI's lightweight general-purpose model with a 400k token context window, positioned between GPT-5 Nano and the full GPT-5 in the GPT-5 family.

Strengths

Balances speed and capability across general reasoning, coding, and text tasks without requiring the computational footprint of larger models.

Best for

Applications that need broad competence and long context handling but can trade some reasoning depth for faster inference and lower overhead.

Limitations

Smaller than GPT-5, so it handles complex multi-step reasoning and nuanced tasks less reliably than larger models in the lineup.