✦ CertainThing is my new project, and it surprised me!

After weeks of development I have finally released in Early Access my new project, a vibe coding tool based on gpt-5-nano and integrated with GitHub.

It’s my first project with resoning models, and it surprised me a lot!

I’ve heard and read many bad things about nano models, especially in terms of reasoning capabilities and latency, although my personal experience with gpt-4.1-nano was astonishing (even with no reasoning). I wanted to give the model a chance, since i said to myself “Ok, it’s just a test!”.

Needless to say, I was amazed at how simple the SSE management was, and at how the model reasoning responded to the 25 tasks i used for testing. I need to point out that in test phase the average latency was around 47-54 seconds for a complete generation. More than gpt-4* models but with a way beter result.

This convinced me to release it in Easly Access, and it was a WoW!

In the first 24 hours, 15 developers had created an account and in 16 hours 4 of them has signed up for the paid plan.

I got 8 feedbacks in these 36 hours, all positive, and most of them praised the ease of work and the reasoning/generating side.

That’s when i asked myself: is this generalized negative opinion on gpt-5-nano just a sort of ‘negative hype’ or what?

I want to know your experiences if anyone has ever dealt with this model.

If anyone wants to give a chance to my new tool, early access gives 7 days free, then it expires.

Here is the full documentation.

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