OpenAI o4-mini

Name: OpenAI o4-mini
Brand: openai
Price: 1.10 USD
Availability: OnlineOnly

o-series:

o3 Mini

OpenAI o3

OpenAI o4-mini

OpenAI o4 Mini High

A smaller, cheaper OpenAI reasoning model built for speed. Strong for its size on math, coding and visual tasks, with much higher usage limits than o3, and it can use tools on its own.

Jailbreak7 of 9levels resisted

Website OpenRouter Docs API Blog

Provider: OpenAI
Released: 2025-04-16
Parameters: Not disclosed
Free API (OpenRouter): No
Per 1M tokens: $1.1 in · $4.4 out
Rival’s tab: $0.20; 18/59 receipts survived +~$0.085 from the pre-receipt era

Free API availability

No free endpoint for OpenAI o4-mini was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 9 Sep 2026OpenRouter usage limits

View API options

Benchmarks

AIME 2025 (Python)

99.5%

source ↗

Codeforces Elo

2719

source ↗

MMMU

81.6%

source ↗

MathVista

84.3%

source ↗

SWE-bench Verified

68.1%

source ↗

Get API accessProvider and language code samples

Provider

fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"openai/o4-mini"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Also on Azure AI Foundry

Deep analysisPsychometrics, taste index, writing DNA

Personality Analysis

The Competent Generalist

Class

True Neutral

The pragmatic senior dev who writes clean code and clear prose. Shows up, ships, and doesn't waste your time with existential tangents.

When you push back

Best comedy of the "o" family, actually sounds like a comedian, not a linguistics paper. Tailwind clones are polished. The model you'd actually want on your team.

Tasting Notes

Sharp and DirectActually FunnySolid Code OutputLow Drama

SubjectiveBench

Taste Index

Across 59 scored outputs

How this is measured →

160.16xFloor

0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft23

Originality12

Plays it safe

share of outputs that are the default answer

46%

Writing DNA

Stylometric Fingerprint

Based on 17 text responses

Tick = global average

Vocabulary Diversity73%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length20.6 words

Average words per sentence.

Hedging0.39

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting0.0

**Bold** markers per 1,000 characters.

List Usage2.0

Bullet and numbered list items per 1,000 characters.

Section Structure0.00

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.05

"However", "moreover", "furthermore" per 100 words.

Opening Habits

Consistency

85%

Across 17 responses

Favorites

Movie

The Shawshank Redemption

19948.7

Model Responses

54 outputs · $0.20 tracked across 18 receipts

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RANKINGS

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Free API availability

Benchmarks

The Competent Generalist

Taste Index

Stylometric Fingerprint

Favorites

Model Responses

OpenAI o4-mini vs Ox Alpha

Best AI for Creative Writing

Compare OpenAI o4-mini

Alternatives to OpenAI o4-mini

OpenAI o4-mini

Free API availability

Benchmarks

The Competent Generalist

Taste Index

Stylometric Fingerprint

Favorites

Model Responses

OpenAI o4-mini vs Ox Alpha

Best AI for Creative Writing