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Models / OpenAI

o4-mini

Deprecated

Snapshot o4-mini-2025-04-16, including the o4-mini alias, shuts down 2026-10-23 and OpenAI names gpt-5.6-terra as the replacement. 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 $1.10, cached input $0.275, output $4.40 per 1M. Specs are from the model page developers.openai.com/api/docs/models/o4-mini: 200,000 context window, 100,000 max output tokens, knowledge cutoff Jun 01, 2024, text and image in, text out. released carries the date embedded in the snapshot id, which is the only release date OpenAI publishes for it. OpenAI separately prices a fine-tuning variant of this snapshot, which this row does not cover. 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.

o4-mini by OpenAI costs $1.10 per 1M input tokens and $4.40 per 1M output tokens ($1.93/1M blended), with a 200K (200.000-token) context window. It is deprecated, shutting down 23 Oct 2026; the recommended replacement is GPT-5.6 Terra.

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 Terra.

Read the o4-mini migration guide → replacement & cheapest alternatives

Provider
OpenAI
Status
Deprecated
Input price
$1.10 / 1M tokens
Output price
$4.40 / 1M tokens
Cached input
$0.275 / 1M tokens
Blended price
$1.93 / 1M tokens
Context window
200.000 tokens (200K)
Max output
100.000 tokens
Modality
text, image
Open weights
No — API only
Knowledge cutoff
2024-06-01
Released
16 Apr 2025
API string
o4-mini-2025-04-16

Source: OpenAI official documentation ↗

See also

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FAQ

o4-mini — questions & answers

How much does o4-mini cost?

o4-mini is priced at $1.10 per 1M input tokens and $4.40 per 1M output tokens ($1.93/1M blended at a 3:1 input-to-output ratio), with cached input at $0.275 per 1M tokens.

What is the context window of o4-mini?

o4-mini has a 200.000-token context window (200K), with up to 100.000 output tokens per request.

Is o4-mini being deprecated or retired?

o4-mini is deprecated. Its scheduled shutdown date is 23 Oct 2026. The recommended migration is GPT-5.6 Terra.

Does o4-mini support image or vision input?

Yes — o4-mini accepts image input. Listed modalities: text, image.

Can I self-host o4-mini?

No — o4-mini 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 o4-mini?

The API model identifier for o4-mini is "o4-mini-2025-04-16" when calling OpenAI's API.

What is o4-mini's knowledge cutoff?

o4-mini's training knowledge cutoff is 1 Jun 2024.