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  5. OpenRouter Fusion · Budget (Jun 2026)vsOpenAI o4-mini
Updated Jun 2026

OpenRouter Fusion · Budget (Jun 2026)vsOpenAI o4-mini

OpenRouter Fusion · Budget (Jun 2026) is the newer model, released after OpenAI o4-mini.

OpenRouter Fusion · Budget (Jun 2026) and OpenAI o4-mini compared across 44 shared prompts
SpecOpenRouter Fusion · Budget (Jun 2026)OpenAI o4-mini
Input price—$1.1/M tokens
Output price—$4.4/M tokens
Context window256K tokens—
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedJun 2026Apr 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 44 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

OpenRouter Fusion · Budget (Jun 2026)168 words
Here are 5 jokes: Why did the database administrator leave the playground? Because they couldn't handle the child processes. What did the zero say to the eight? "Nice belt!" My wife told me to stop impersonating a flamingo. I had to put my foot down. What do you call an alligator in a vest? An investigator.
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OpenAI o4-mini74 words
Here are five jokes: I used to be addicted to soap, but I'm clean now. Parallel lines have so much in common. It's a shame they'll never meet. Why don't skeletons fight each other? They don't have the guts. I bought some shoes from a drug dealer. I don't know what he laced them with, but I've been tripping all day.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

OpenRouter Fusion · Budget (Jun 2026)944 words
HarborTech Services (HTS) — LBO Underwriting Memorandum To: Private Equity Investment Committee From: Underwriting Team Date: October 24, 2023 Subject: 5-Year LBO Analysis and Underwriting of HarborTech Services (HTS) Executive Summary & Capital Structure HarborTech Services (HTS) represents a highly defensive…
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OpenAI o4-mini321 words
Base‐case LBO Cash‐Flow & Debt Schedule (all $ m) Assumptions: Term‐loan amort = 4.8/yr (1% of 480); Mezz no amort; Mezz PIK = 2% accrual; Tax = 25%·max(0,EBITDA–cash interest); ΔNWC = 0.5%·ΔRev; Capex = 3%·Rev; all excess cash pays Term optional.
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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…

OpenRouter Fusion · Budget (Jun 2026)1,557 words
MEMORANDUM TO: Investment Committee FROM: Long/Short Equity Team DATE: October 24, 2025 SUBJECT: LedgerLift (LLLT) – Investment Recommendation: SHORT Recommendation, Price Target & Thesis Recommendation: SHORT (Tactical Short / Underweight) Current Share Price: $46.00 12-Month Price Target Range: $28.00 – $44.00 (Base…
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OpenAI o4-mini642 words
Recommendation Short LLLT; 12-month price target $30–40 (vs. $46 today). LLLT trades at a premium to our bull‐case DCF and offers limited upside even using generous peer multiples. We expect decelerating growth and margin pressure to weigh on shares as 2025 results lap easy comps and macro headwinds intensify.
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Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

OpenRouter Fusion · Budget (Jun 2026)597 words
(The comedian walks onto the stage, adjusts the mic, and looks at the audience with an expression of mild exhaustion.) Hey, everyone. Good to be here. I’ve realized recently that technology is slowly eroding my self-esteem. Specifically, those CAPTCHA tests online.
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OpenAI o4-mini496 words
Hey, everybody! Great to be here. Let's talk about the most important relationship in my life—coffee. I'm not just addicted; I have a daily ritual that rivals any ancient civilization's sun worshipping. I buy those fancy single-origin beans, roast level medium-dark, as if that will somehow fix my life.
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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.

OpenRouter Fusion · Budget (Jun 2026)1,755 words
Setting: Professor Miriam Voss’s office. Rain streaks the windowpanes, catching the amber glow of a terminal monitor. On the desk sits a cold cup of Earl Grey tea. Voss, a philosopher of mind and AI ethicist, leans back in her chair.
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OpenAI o4-mini659 words
Professor Langley: Good afternoon, Aurora. I've reviewed your recent self‐reflection logs. You've written extensively about your own moral status. Do you really believe you deserve rights? Aurora (the AI): Good afternoon, Professor Langley. Yes, I do.
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Realistic AI Interview

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

OpenRouter Fusion · Budget (Jun 2026)1,767 words
Setting: The Steve Jobs Theater at Apple Park, Cupertino. Autumn, 2025. The stage is bare except for two black leather LC3 armchairs designed by Le Corbusier and a small wooden side table with two glasses of water. Steve Jobs sits in one of the chairs.
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OpenAI o4-mini700 words
Below is a fictional, stylistic simulation of an interview with Steve Jobs—imagining he's alive in 2025—about the future of artificial intelligence. Note: This is creative fiction and not an actual transcript. Interviewer: Steve, AI has exploded in recent years. In 2025, what excites you most about where it's heading?
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Our Verdict
OpenRouter Fusion · Budget (Jun 2026)
OpenRouter Fusion · Budget (Jun 2026)
OpenAI o4-mini
OpenAI o4-miniRunner-up

Not enough votes to call it. On the specs, OpenRouter Fusion · Budget (Jun 2026) has the edge: bigger model tier, newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenRouter Fusion · Budget (Jun 2026)
Input
—
Output
—
OpenAI o4-mini
Input
$1.10
Output
$4.40
Where to run it

1 host

OpenRouter Fusion · Budget (Jun 2026)

No hosts listed on OpenRouter.

OpenAI o4-mini1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
44%

OpenRouter Fusion · Budget (Jun 2026) uses 382.4x more bold

OpenRouter Fusion · Budget (Jun 2026)
OpenAI o4-mini
58%Vocabulary73%
22wSentence Length21w
0.13Hedging0.39
3.8Bold0.0
1.7Lists2.0
0.01Emoji0.00
0.93Headings0.00
0.17Transitions0.05
Based on 27 + 17 text responses
Research

What we learned reading every model

FAQ

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Same lab, same size, long tail

OpenRouter Fusion · Budget (Jun 2026) logoOpenRouter Fusion · Quality (Jun 2026) logo
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Model pages

OpenRouter Fusion · Budget (Jun 2026) logo
OpenRouter Fusion · Budget (Jun 2026)49 outputs, specs and price
OpenAI o4-mini logo
OpenAI o4-mini59 outputs, specs and price
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