Uploaded December 2025 | Updated September 2026, 32 minutes ago
Most people think Instant, Thinking, and Auto are “different models” in ChatGPT… but here’s the real secret: it’s the same brain, just thinking at different speeds.
Instant mode is like asking your friend for the quickest possible answer. Thinking mode is asking them to take a breath and double-check their reasoning. Auto is just… smart enough to pick the right approach for you.
Once you understand that, the weird differences in answer quality suddenly make sense.
And honestly, I love how this shows something most users still miss: performance isn’t only about model size. It’s about how much thinking time we allocate.
I’m Louis-François, PhD dropout, now CTO and co-founder at Towards AI. Follow me for tomorrow’s no-BS AI roundup 🚀
#chatgpt #openai #aiexplained #short
Most people think Instant, Thinking, and Auto are “different models” in ChatGPT… but here’s the real secret: it’s the same brain, just thinking at different speeds.
Instant mode is like asking your friend for the quickest possible answer. Thinking mode is asking them to take a breath and double-check their reasoning. Auto is just… smart enough to pick the right approach for you.
Once you understand that, the weird differences in answer quality suddenly make sense.
And honestly, I love how this shows something most users still miss: performance isn’t only about model size. It’s about how much thinking time we allocate.
I’m Louis-François, PhD dropout, now CTO and co-founder at Towards AI. Follow me for tomorrow’s no-BS AI roundup 🚀
#chatgpt #openai #aiexplained #short
