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Rumor: OpenAI may ship an Astra upgrade to counter Opus 5.5

A leak claims Opus 5.5 is putting pressure on Astra and is cheaper, and that OpenAI may release GPT-6.1 or GPT-6.5 Astra around DevDay or early October.

Mehdi
@MehdiCadeArchived 2026.09.25Originally posted 2026.09.24
Rumor: OpenAI may ship an Astra upgrade to counter Opus 5.5
Mehdi @MehdiCadeOriginally posted 2026.09.24
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🚨 GPT-6.5 Astra Leak > OpenAI reportedly gearing up to answer Opus 5.5 > Opus 5.5 just launched and is said to be piling real pressure on Astra > Also notably cheaper than Astra > OpenAI may not have anticipated Opus 5.5 performing this well > A fresh Astra-tier update is reportedly already in the works > Could land as GPT-6.1 Astra or possibly GPT-6.5 > OpenAI may be aiming to respond around DevDay or early October > The target: overtake Opus 5.5 and stay ahead of Anthropic's next moves > OpenAI has been hyping up a massive DevDay for weeks Let's see how OpenAI answers back.

This post quotes another post: x.com/codexresets1/status/2103091924592673192

x.com/mehdicade/status/2103092250888622100Archived 2026.09.25 10:09