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Roman Grossi • Founder

Indie hacking, startups, resilient systems - and staying sane while building a small company

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First Impressions of GPT-5: Speed, Precision, and the End of Model Fatigue

· 1 min read · 8 views

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Yesterday OpenAI introduced GPT-5, and the new model is already leading in most benchmarks.

My subjective take after a few conversations with GPT-5: it is so good that I honestly cannot imagine how we ever managed without it.

Without 'thinking' enabled, answers now appear as fast as if I were using 4o-mini, while accuracy and quality are ahead of all previous models.

The 'thinking' mode also became noticeably faster and more precise (I tested it on legal questions and idea research).

There are only two models left in ChatGPT: GPT-5 and GPT-5 Thinking. That is it.

And yes, even if you do not explicitly ask GPT to 'think', it now turns thinking on automatically for complex queries.

This is still not AGI. It is more like the quintessence of everything the earlier models learned, wrapped into a convenient interface with slightly more accurate answers.

I would say 'highly recommend', but that hardly seems necessary when there are simply no other options left :)

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