Is o1 deprecated or retired?

Yes. o1 is Deprecated per OpenAI's own deprecation notice and shuts down on 2026-10-23. ModelPriceWatch last re-verified this status on 2026-08-24.

OpenAI names GPT-5.6 Sol as the successor to o1. GPT-5.6 Sol is priced at $4 per 1M input tokens and $20 per 1M output tokens.

When does o1 shut down?

OpenAI has announced o1 shuts down on 2026-10-23. It remains purchasable until then, but new work should target a current model.

Is o1 deprecated?

OpenAI · lifecycle status verified Aug 24, 2026 against the provider's own page.

Yes — o1 is deprecated and shuts down Oct 23, 2026. Still purchasable until then, but OpenAI has announced end-of-life. Don't start new work on it.

Last verified pricing

historical reference — not a buy recommendation

o1 was last priced at $15.00 per 1M input tokens and $60.00 per 1M output tokens, with a 200K-token context window. Full history stays on the o1 model page.

What replaced o1?

successor named by OpenAI

OpenAI's named successorfrom the deprecation notice — not our inference

Model	Input $/M	Output $/M	Context
o1 Deprecated	$15.00	$60.00	200K
GPT-5.6 Sol	$4.00	$20.00	1M	details →

Picking a replacement

We don't hold a benchmark average for o1, so we won't claim any model is "equivalent" to it. The current OpenAI lineup below is a factual starting point, with no quality-parity claim.

Current OpenAI alternatives

same provider, sold today — no parity claim

Model	Input $/M	Output $/M	Context
o3	$2.00	$8.00	200K	details →
o3-pro	$20.00	$80.00	200K	details →

Migrating off o1? The migration calculator compares your exact input/output token mix against every current model we track, with benchmark tradeoffs. Lifecycle data on this page comes from OpenAI's own page and was last re-verified on Aug 24, 2026. See all retired & deprecated models.