❯ GPT-6 Astra opens to all Plus, Pro and enterprise users, with the API live

full rolloutOpenAI has pushed GPT-6 Astra to Plus, Pro, Enterprise and Business Standard and Premium users in ChatGPT Work and Codex — every paid tier — with the API live at $10 per million input tokens and $50 per million output.

the paceFrom the September 3 launch limited to Daybreak program organizations to full paid-tier coverage on September 4 took under two days. Users also observed that OpenAI quietly raised five-hour rate limits by roughly 50% across plans with no announcement; a day earlier Anthropic had reset Claude Code usage limits. The two are colliding head-on over usage allowances, and whoever’s inference cluster holds up gets to hand out more.

the testA comparison run by third-party API platform AI/ML API showed Astra completing the same task on 25,159 tokens for $1.67 against 37,767 tokens for Claude Fable 5.1 — 33% fewer tokens and 33% lower cost. With identical list prices, the difference is now landing on the invoice. What matters next is whether that gap holds across more task types.

▪ SIGNALWith prices aligned, the fight moved to allowances and token efficiency — the bill is the only battleground left with any distance in it.