OpenAI has stopped taking new subscriptions and upgrades for ChatGPT Pro, its $200-a-month plan, after demand for its newest model, Astra, pushed the company's infrastructure past what it could comfortably support. The pause started September 10, 2026, and OpenAI says current Pro subscribers keep full access.

The move was announced by Thibault "Tibo" Sottiaux, OpenAI's product lead for Codex and ChatGPT, in a post on X. It's the clearest sign yet that Astra's September 3 launch is straining OpenAI's compute harder than the company anticipated, and it's not the first time a hot model launch has forced this exact move.

The Details

He had flagged the risk a day earlier.

Astra, OpenAI's most capable model to date, launched September 3 and rolled out across the Pro, Plus, Enterprise, and Business tiers. According to Fortune, the Pro plan carries 20 times the usage allowance of Plus, which is why new Pro accounts draw the heaviest load. OpenAI raised Codex usage limits as recently as last month, a sign the current strain built up fast. Fortune also reports OpenAI has expanded available compute roughly 9.5 times over since 2023, and that hasn't been enough to keep pace with Astra's launch. CEO Sam Altman has already called the rollout "messy," per Computerworld, after some paying users couldn't reach the model right away.

OpenAI hasn't said when Pro sign-ups will reopen or how many people are trying to sign up each day.

Why It Matters

OpenAI has done this before. In November 2023, Sam Altman paused ChatGPT Plus sign-ups after a post-DevDay surge exceeded capacity. That pause lasted about two weeks. The pattern repeats: ship a headline model, watch demand outstrip the compute budgeted for it, close the door on new payers rather than degrade service for people already inside.

What's different this time is which tier got cut. In 2023, OpenAI paused its entire paid product. In 2026, it's protecting Plus and Go while sacrificing its most expensive tier, the one that presumably brings in the most revenue per user. That's a real signal about where the capacity ceiling sits. It's not total user count causing the strain, it's the heaviest individual usage profiles that Astra's expanded allowances make possible.

What to Watch

Whether OpenAI reopens Pro sign-ups within days or lets the pause run for weeks will say a lot about how deep the capacity gap actually is. Watch for quieter throttling on the API or Enterprise side too, since OpenAI hasn't published numbers to back up "unprecedented." And if existing Pro users start reporting degraded Astra access despite the pause, that's the detail worth chasing next.

Related BriefFlash coverage: OpenAI launched Astra amid internal safety concerns, and for more on the model's underlying architecture, what "opaque recurrence" means for Astra's reasoning.

Key Takeaways

  • OpenAI froze new sign-ups and upgrades to ChatGPT Pro (the $200/month "Pro 20X" tier) starting September 10, 2026, citing strain from Astra usage.
  • Only new and upgrading Pro customers are affected; existing Pro accounts, plus the API, Go, and Plus tiers, remain open.
  • This is the second time in three years OpenAI has paused paid sign-ups after a launch outran its own compute, following a similar Plus-tier pause in November 2023.
  • OpenAI hasn't disclosed a reopening date or daily sign-up volume, so the actual scale of the demand is still unverified.

FAQ

Why did OpenAI pause ChatGPT Pro sign-ups?

OpenAI said the $200-a-month Pro plan puts the most strain on its systems, and demand tied to its new Astra model exceeded what its infrastructure could handle. It paused new sign-ups and upgrades on September 10, 2026, while leaving the API, Go, and Plus plans open.

Are existing ChatGPT Pro subscribers affected?

No. OpenAI has said existing Pro subscriptions are not impacted by the pause. The freeze applies only to new sign-ups and upgrades to the plan.

Has OpenAI done this before?

Yes. In November 2023, OpenAI paused new ChatGPT Plus sign-ups after a surge in demand following its DevDay conference exceeded capacity at the time. That pause lasted roughly two weeks before sign-ups reopened.