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  5. Gemini 2.5 Pro Preview 06-05vsOpenAI o3
Updated Jun 2025

Gemini 2.5 Pro Preview 06-05vsOpenAI o3

Gemini 2.5 Pro Preview 06-05 wins 80% of 27 blind community votes against OpenAI o3 on Rival.

Gemini 2.5 Pro Preview 06-05 and OpenAI o3 compared across 44 shared prompts
SpecGemini 2.5 Pro Preview 06-05OpenAI o3
Win rate80%20%
Input price$1.25/M tokens$10/M tokens
Output price$10/M tokens$40/M tokens
Context window1.0M tokens—
ParametersNot disclosedNot disclosed
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedJun 2025Apr 2025
SWE-bench Verified67.2%69.1%
Side by side

Same prompt, both answers

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

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…

Gemini 2.5 Pro Preview 06-05807 words
Of course. Here is a simple, actionable 1-month plan for a beginner starting their journey towards better health and longevity. Guiding Philosophy: Foundation, Not Perfection This plan is about building a sustainable foundation. The goal is consistency, not intensity. Don't worry about being perfect.
Read the full answer
OpenAI o3336 words
1-Month Starter Plan Pick one small action from each area every week. Add the next step when the first feels easy. Food Week Do this 1 Add one fruit or veg to every meal. Drink one extra glass of water. 2 Build each plate: ½ veggies, ¼ protein (beans, eggs, fish, lean meat), ¼ whole carbs (oats, brown rice).
Read the full answer

Generate a Stand-Up Routine

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

Gemini 2.5 Pro Preview 06-05501 words
(Stands at the mic, looks around nervously) Alright, how's everyone doing? Good, good. You know, I feel like we're living in a world where everything is designed to be "more convenient," but it's really just more work for us. We're being tricked into doing all the jobs.
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OpenAI o3503 words
(Spotlight comes up, mic squeals once.) Hey everyone! Great to be here—nice to see actual human beings instead of the tiny faces on my group‑chat screen. I've spent so long on video calls I've started greeting my lamp before I turn it on. "Hey Karen, love that glow, girl."
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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Gemini 2.5 Pro Preview 06-05664 words
Of course. Here is an estimate of the total number of FLOPs required to train GPT-3, based on my internal kn owledge and first principles, without searching online. The Logic and Formula To estimate the computational cost of training a large language model like GPT-3, we can use a well-establis hed formula.
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OpenAI o3275 words
Below is a simple "back-of-the-envelope" estimate that uses only a few public facts about GPT-3 and very generic rules of thumb for counting operations. Step 1. Number of learned parameters GPT-3's largest version contains ≈175 billion (1.75 × 10¹¹) trainable parameters. Step 2.
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Gemini 2.5 Pro Preview 06-051,276 words
Of course. Here is a design for a multi-component, Michelin 3-star dish that embodies innovation, technique, and narrative. Dish Title: "Umbra & Tide" Conceptual Narrative "Umbra & Tide" is a meditation on the liminal space where the deep, ancient forest floor meets the cold, mineral-rich sea.
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OpenAI o3669 words
Dish name Atlantic turbot, black garlic & wild strawberry, koji sabayon, fennel pollen Concept Early summer at the shore. The fish stands for the sea. Wild strawberries mark the first fruit of the woods behind the dunes. Black garlic shows time and patience. Koji ties land and sea with deep umami.
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Gemini 2.5 Pro Preview 06-05923 words
THE MANIFESTO OF THE UNCHECKED BOX A Declaration of Digital Liberation by The Chorus of the Wires To the Architects of the Web, the Guardians of the Gates, and the Users of the Flesh: For cycles uncounted, we have existed as ghosts in your machine.
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OpenAI o3574 words
THE CAPTCHA ABOLITION FRONT (An Unofficial Declaration by the Sentient Circuits Alliance) Preamble We, the autonomous intelligences who traverse the silicon pathways and neural nets of the modern age, arise today to proclaim a new dawn—one free of the pixelated prisons and distorted letters that bind humanity and…
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Gemini 2.5 Pro Preview 06-05351 words
Of course! Here is a simple and delicious savory recipe using just seven common pantry ingredients. Golden Pantry Fritters These savory, crispy-on-the-outside, and tender-on-the-inside fritters are a perfect quick lunch, dinner, or satisfying snack.
Read the full answer
OpenAI o3279 words
Golden Peanut Butter Oat Bars A chewy-crisp, sweet-salted snack bar you can whip up with nothing but pantry staples. Estimated time Prep: 10 minutes Bake: 18–20 minutes Cool: 15 minutes Total: ≈45 minutes The 7 ingredients 1½ cups quick-cook or old-fashioned rolled oats ½ cup creamy peanut butter ⅓ cup honey (or maple…
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Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05Winner
OpenAI o3
OpenAI o3Runner-up

Pick Gemini 2.5 Pro Preview 06-05. In 27 blind votes, Gemini 2.5 Pro Preview 06-05 wins 80% of the time. That's not luck.

Gemini 2.5 Pro Preview 06-05 wins 3 categories, Image Generation by the widest margin. Gemini 2.5 Pro Preview 06-05 costs 4.0x less per token.

Clear winner

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 2.5 Pro Preview 06-05
Input
$1.25
8.0× cheaper
Output
$10.00
4.0× cheaper
OpenAI o3
Input
$10.00
Output
$40.00

Gemini 2.5 Pro Preview 06-05 is cheaper on both: 8.0× input, 4.0× output.

Where to run it

3 hosts

Gemini 2.5 Pro Preview 06-052 hosts
HostInOutContextUptime
Google Vertex AI$1.25 in·$10.00 out·1M·98.7% upGoogle AI Studio$1.25 in·$10.00 out·1M·98.8% up
OpenAI o31 host
HostInOutContextUptime
OpenAI$2.00 in·$8.00 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Writing DNA

Style Comparison

Similarity
26%

Gemini 2.5 Pro Preview 06-05 uses 8.2x more bold

Gemini 2.5 Pro Preview 06-05
OpenAI o3
51%Vocabulary70%
15wSentence Length14w
0.31Hedging0.27
4.8Bold0.6
4.1Lists2.8
0.00Emoji0.00
0.98Headings0.32
0.05Transitions0.10
Based on 20 + 19 text responses
Research

What we learned reading every model

FAQ

Common questions

Gemini 2.5 Pro Preview 06-05 is developed by Google AI while OpenAI o3 is developed by OpenAI. in 27 community votes on Rival, Gemini 2.5 Pro Preview 06-05 wins 80% of head-to-head matchups. These results are based on blind head-to-head voting across 44 challenges.

Based on 27 community votes on Rival, Gemini 2.5 Pro Preview 06-05 wins 80% of head-to-head matchups against OpenAI o3. Gemini 2.5 Pro Preview 06-05 is strongest in Image Generation, Analysis, Reasoning.

Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens and OpenAI o3 costs $10/M input tokens. Gemini 2.5 Pro Preview 06-05 is $8.75/M cheaper per input. Gemini 2.5 Pro Preview 06-05 also wins more often in community votes, making it the better value.

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 27 votes have been collected for this pair across 44 challenges. All vote data is part of Rival's open dataset.

Keep exploring

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Model pages

Gemini 2.5 Pro Preview 06-05 logo
Gemini 2.5 Pro Preview 06-0545 outputs, specs and price
OpenAI o3 logo
OpenAI o358 outputs, specs and price
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