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GPT-5.6 Sol is routing to GPT-6 Sol for some users, developer says

A developer says some accounts' GPT-5.6 Sol is being routed to GPT-6 Sol, which testers report is extremely fast, with a launch expected this week or next and a prediction that it beats Opus 5.2.

Pankaj Kumar
@pankajkumar_devArchived 2026.09.16Originally posted 2026.09.16
GPT-5.6 Sol is routing to GPT-6 Sol for some users, developer says
Pankaj Kumar @pankajkumar_devOriginally posted 2026.09.16
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GPT-6 Sol Could Come Next Week - GPT-5.6 Sol is routing to GPT-6 Sol for some users. I checked my account, but I don't have access yet. - Based on their experience, its extremely fast and efficient. - It could come later this week or next week, as they are currently doing limited testing with users. - Its also possible they launch it at OpenAI DevDay on September 29, but that feels a bit late to me, so my guess is next week. - Based on my expectations, GPT-6 Sol >> Opus 5.2 this time. I tested Opus 5.2 and it’s also a good model, but I am waiting to get access to GPT-6 Sol so I can share my own impressions.

x.com/pankajkumar_dev/status/2099927536709050526Archived 2026.09.16 10:04