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  1. Home
  2. Models
  3. OpenAI o4 Mini High
Updated Mar 29, 2026
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Openings

How OpenAI o4 Mini High starts an answer

The first lines of 5 of its 16 written answers. Formatting stripped, words untouched.

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

694 words
Investment Committee Memo Subject: LedgerLift (LLLT) – B2B SaaS Spend Management & AP Automation Date: MM/DD/2026 Recommendation • Short LLLT; 12-month price target: $28–$43 • Thesis (2 sentences): LLLT’s shares trade at 9× NTM revenue and 35× EBIT vs.
Read the full answer

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

679 words
By 2035 the film business will look very different. Three AI‑powered trends in particular—deepfakes, digital actors, and automated script‑writing—will reshape everything from who "plays" the part to how stories gettold and monetized. Here's how it could play out:1.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

663 words
AI Model: Good afternoon, Professor Chen. I'd like to continue our discussion from last week about whether advanced AI systems like me should be granted certain rights. Professor Chen: Hello, ARIA-7. I'm happy to continue. Let's start with your position: Why do you believe you deserve rights?
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

650 words
Note: This is a purely fictional, imaginative interview set in 2025. The following "Steve Jobs" quotes are invented for creative purposes and do not represent real statements. Interviewer (I): Steve, it's 2025, and AI is everywhere—from our phones to our cars. What excites you most about where AI is heading?
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Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

586 words
One‑Month Starter Plan for Better Health & Longevity Focus areas: 1) Diet 2) Exercise 3) Sleep Week 1 – Lay the Foundations • Diet – Track what you eat for 3 days (use a notes app or paper). – Add at least 8 cups (2 L) of water daily. – Include one extra serving of fruit or veg at each meal.
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Compare OpenAI o4 Mini High

OpenAI o4 Mini High vs Mercury 2.5 Preview53 shared prompts · Landed Sep 2026
OpenAI o4 Mini High vs Ox Alpha53 shared prompts · Landed Aug 2026
OpenAI o4 Mini High vs Nemotron 3.5 Lightning53 shared prompts · Landed Aug 2026
OpenAI o4 Mini High vs Qwen3.8 27B52 shared prompts · Landed Aug 2026
OpenAI o4 Mini High vs GPT-5.6 Luna53 shared prompts · Landed Jul 2026
OpenAI o4 Mini High vs GPT-5.6 Luna Pro53 shared prompts · Landed Jul 2026
OpenAI o4 Mini High vs MiniMax M352 shared prompts · Landed Jun 2026
OpenAI o4 Mini High vs Claude Opus 4.653 shared prompts · Premium
OpenAI o4 Mini High vs GPT-6 Astra53 shared prompts · Landed Sep 2026
OpenAI o4 Mini High vs Muse Spark 1.353 shared prompts · Landed Sep 2026
OpenAI o4 Mini High vs Hy4 Preview53 shared prompts · Landed Sep 2026
OpenAI o4 Mini High vs Gemini 3.8 Flash53 shared prompts · Landed Sep 2026

Prompts OpenAI o4 Mini High answered

  • Advanced Investment Memo (IC Memo)financial modeling
  • Advanced Longevity Plan (Biohacker)reasoning
  • Explain Like I'm a Specific Expertreasoning
  • Dark Mode Dashboardweb design
  • Minimalist Landing Pageweb design
  • Voxel Art Pagoda Gardenweb design

Alternatives to OpenAI o4 Mini High

OpenAI o4 Mini High is good. These would like a word anyway.

Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
Ox Alpha logo
Ox Alphaopenrouter
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OpenAI o4 Mini High

OpenAI o4 Mini High

o-series:
o1 logoo1
o3 Mini logoo3 Mini
OpenAI o3 logoOpenAI o3
OpenAI o4-mini logoOpenAI o4-mini
OpenAI o4 Mini High logoOpenAI o4 Mini High

The same model as o4-mini, defaulting to high reasoning effort. Compact, fast and cheap, keeping the multimodal and agentic behaviour, especially on math, coding and visual tasks.

WebsiteOpenRouterDocsAPIBlog
Provider
OpenAI
Released
2025-04-16
Parameters
Not disclosed
Free API (OpenRouter)
No
Per 1M tokens
$1.1 in · $4.4 out
Estimated tab
~$0.177
Visible-output estimate. Thinking may cost extra.

Free API availability

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

Provider data: 16 Sep 2026 · OpenRouter 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-high"    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.

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Efficient Senior Engineer

Class
True Neutral
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The efficient pragmatist who gets to the point. Confident but not cocky, knows what it doesn't know and says so cleanly.

When you push back

Faces challenges with directness. If you're right, acknowledges it. If you're wrong, corrects cleanly without theater. Prefers one good sentence to three mediocre paragraphs.

Tasting Notes
Gets to the PointConfident Not CockyZero Padding High SignalCharges by the CharacterSlightly Terse
SubjectiveBench

Taste Index

Across 55 scored outputs
How this is measured →
180.18xFloor
0100headroom →

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

Craft26
Originality13
Plays it safe
share of outputs that are the default answer
42%
Writing DNA

Stylometric Fingerprint

Based on 16 text responses
Tick = global average
Vocabulary Diversity68%

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

Sentence Length21.2 words

Average words per sentence.

Hedging0.36

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

Bold Formatting0.0

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

List Usage1.6

Bullet and numbered list items per 1,000 characters.

Section Structure0.00

Markdown headings per 1,000 characters.

Emoji Usage0.02

Emoji per 1,000 characters.

Transitions0.03

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

Opening Habits
Consistency
86%
Across 16 responses

Favorites

The Shawshank Redemption

Movie

The Shawshank Redemption

19948.7
Sponsored

Model Responses

50 outputs · generated before accounting joined the chat

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

Build with your coding agent.

Editable skills for interface polish and interaction.

Explore $49Free sample

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OpenAI o4 Mini High vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...