Is o3 deprecated or retired?

Yes. o3 is Deprecated per OpenAI's own deprecation notice and shuts down on 2026-12-11. ModelPriceWatch last re-verified this status on 2026-10-18.

OpenAI names GPT-5.6 Sol as the successor to o3. GPT-5.6 Sol is priced at $4 per 1M input tokens and $20 per 1M output tokens.

When does o3 shut down?

OpenAI has announced o3 shuts down on 2026-12-11. It remains purchasable until then, but new work should target a current model.

Is o3 deprecated?

OpenAI · lifecycle status verified Oct 18, 2026 against the provider's own page.

Yes — o3 is deprecated and shuts down Dec 11, 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historical reference — not a buy recommendation

o3 was last priced at $2.00 per 1M input tokens and $8.00 per 1M output tokens, with a 200K-token context window. Full history stays on the o3 model page.

What replaced o3?

successor named by OpenAI

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

Model	Input $/M	Output $/M	Context
o3 Deprecated	$2.00	$8.00	200K
GPT-5.6 Sol	$4.00	$20.00	1M	details →

Picking a replacement

We don't hold a benchmark average for o3, so we won't claim any model is "equivalent" to it. Compare live prices across every current model in the migration calculator.

Migrating off o3? 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 Oct 18, 2026. See all retired & deprecated models.