"Notably, GPT‑5 with minimal reasoning is a different model than the non-reasoning model in ChatGPT, and is better tuned for developers. The non-reasoning model used in ChatGPT is available as gpt-5-chat-latest."
hmm, they should call it gpt-5-chat-nonreasoning or something.
Setting "reasoning_effort" to "minimal" translates to zero reasoning tokens from what I've seen. So you can get non-reasoning from both "gpt-5" and "gpt-5-chat-latest"
"gpt-5-chat-latest is described by OpenAI as a non-reasoning GPT-5 variant—meaning it doesn’t engage in the extended “thinking token” process at all.
gpt-5 with reasoning_effort="minimal" still uses some internal reasoning tokens—just very few—so it’s not truly zero-reasoning.
The difference: "minimal" is lightweight reasoning, while non-reasoning is essentially no structured chain-of-thought beyond the basic generation loop."
weird-eye-issue|6 months ago
attentive|6 months ago