Unverified leak points to an OpenAI Astra launch next week
The account behind the claim calls Astra OpenAI's largest pretrain since GPT-4.5 and names "mewfour" as its release candidate.
By Ryan Merket · Published
Why it matters
Astra would mark a return to large-scale pretraining as OpenAI's product lineup shifts toward named capability tiers. The claim remains uncorroborated and carries no performance or pricing data.

An unverified leak posted Thursday claims OpenAI is preparing to release a model called Astra during the week of August 10th, potentially putting another major model into the market roughly a month after OpenAI launched GPT-5.6.
leo (@synthwavedd) made the claim in a two-post thread on X at 7:00 a.m. on August 6th. The account described Astra as a newly pretrained model and the largest OpenAI has trained since GPT-4.5. It also identified an internal checkpoint called "mewfour" as the release candidate.