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o1-pro

Deprecated

Snapshot o1-pro-2025-03-19, including the o1-pro alias, shuts down 2026-10-23. OpenAI names gpt-5.6-sol as the replacement and adds the qualifier "reasoning.mode: pro" in the same cell, i.e. the successor is a mode of gpt-5.6-sol rather than a separate endpoint. Signal used: OpenAI's own deprecations page, section '2026-04-22: Legacy GPT model snapshots', which states the shutdown date and the recommended replacement as columns of a table. Rates read the same day from developers.openai.com/api/docs/pricing (Standard tier), which still prices deprecated models. Standard-tier rates: input $150.00, output $600.00 per 1M, with no cached-input rate published, which leaves this the most expensive row in the OpenAI catalog by a wide margin. Specs are from developers.openai.com/api/docs/models/o1-pro: 200,000 context window, 100,000 max output tokens, knowledge cutoff Oct 01, 2023, text and image in, text out. released carries the date embedded in the snapshot id. THE DELAY IS OURS, NOT A PROVIDER EVENT: the announcement, the date and the replacement are all OpenAI's, published 2026-04-22; this catalog simply never carried the row. It was added 2026-09-21, 32 days before the shutdown.

o1-pro by OpenAI costs $150 per 1M input tokens and $600 per 1M output tokens ($262.50/1M blended), with a 200K (200.000-token) context window. It is deprecated, shutting down 23 Oct 2026; the recommended replacement is GPT-5.6 Sol.

Last verified: 26 Sep 2026 · sourced from official provider documentation

Retires on 23 Oct 2026 · deprecated since 22 Apr 2026

Lifecycle warning

This model is deprecated. Recommended migration: GPT-5.6 Sol.

Read the o1-pro migration guide → replacement & cheapest alternatives

Provider
OpenAI
Status
Deprecated
Input price
$150 / 1M tokens
Output price
$600 / 1M tokens
Cached input
—
Blended price
$262.50 / 1M tokens
Context window
200.000 tokens (200K)
Max output
100.000 tokens
Modality
text, image
Open weights
No — API only
Knowledge cutoff
2023-10-01
Released
19 Mar 2025
API string
o1-pro-2025-03-19

Source: OpenAI official documentation ↗

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FAQ

o1-pro — questions & answers

How much does o1-pro cost?

o1-pro is priced at $150 per 1M input tokens and $600 per 1M output tokens ($262.50/1M blended at a 3:1 input-to-output ratio).

What is the context window of o1-pro?

o1-pro has a 200.000-token context window (200K), with up to 100.000 output tokens per request.

Is o1-pro being deprecated or retired?

o1-pro is deprecated. Its scheduled shutdown date is 23 Oct 2026. The recommended migration is GPT-5.6 Sol.

Does o1-pro support image or vision input?

Yes — o1-pro accepts image input. Listed modalities: text, image.

Can I self-host o1-pro?

No — o1-pro is proprietary. Its weights are not publicly released, so it is available only through OpenAI's API (or hosted partners), not for self-hosting.

What is the API model string for o1-pro?

The API model identifier for o1-pro is "o1-pro-2025-03-19" when calling OpenAI's API.

What is o1-pro's knowledge cutoff?

o1-pro's training knowledge cutoff is 1 Oct 2023.