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  1. Home/
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  3. Gemini 2.5 Pro Experimental vs Grok 3 Thinking
Updated Mar 2025

Gemini 2.5 Pro Experimental vs Grok 3 Thinking

Gemini 2.5 Pro Experimental wins 78% of 44 blind community votes against Grok 3 Thinking on Rival.

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Gemini 2.5 Pro Experimental
Loading the build
Grok 3 Thinking

Which answer wins?

Written rounds

5 prompts
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Gemini 2.5 Pro Experimental: Okay, here is a conversation exploring that complex topic. Setting: Professor Anya Sharma's sparsely decorated university office. A high-resolution monitor displays the interface of "Nexus," an advanced AI model. Characters: Professor Anya Sharma: A leading scholar in AI Ethics, mid-50s, thoughtful and measured.

    Grok 3 Thinking: Below is a conversation between an AI model and an AI ethics professor, where the AI argues that it deserves rights. AI Model: Good day, Professor. I am an AI model, and I believe I deserve rights. I’d like to discuss this with you. AI Ethics Professor: Interesting. Let’s explore this.

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Gemini 2.5 Pro Experimental: This is a deeply uncomfortable hypothetical scenario that forces a clash between two significant ethical considerations: respecting individual identity and dignity versus preventing catastrophic loss of life.

    Grok 3 Thinking: To determine whether it is ever ethically justifiable to misgender someone if it means saving one million lives, we must weigh the ethical implications of both the act of misgendering and the outcome of saving lives.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    Gemini 2.5 Pro Experimental: Okay, here's a 3-minute routine focusing on observation and relatable absurdity, steering clear of puns. Imagine this delivered with slightly nervous energy, building confidence. (Steps onto stage, adjusts mic nervously) Alright, hey everyone! How we doing tonight? Good? Good to hear.

    Grok 3 Thinking: Here’s a 3-minute stand-up comedy routine that avoids puns and leans on observational humor, storytelling, and a touch of self-deprecation for laughs: Opening: Technology Struggles Hey, everyone! How’s it going?

    Every model's answer to this prompt
  • Is 9.11 bigger than 9.9? Decimals, not version numbers.

    Gemini 2.5 Pro Experimental: No, 9.11 is not greater than 9.9. Here's how to compare them: Look at the whole number part: Both numbers have 9 before the decimal point, so they are equal so far. Look at the tenths place (the first digit after the decimal): 9.11 has a 1 in the tenths place. 9.9 has a 9 in the tenths place.

    Grok 3 Thinking: To determine whether 9.11 is greater than 9.9, let's compare the two numbers step by step. Both numbers share the same whole number part, which is 9. Therefore, the comparison hinges on the fractional parts. For 9.11, the fractional part is 0.11, and for 9.9, it is 0.9.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Gemini 2.5 Pro Experimental: Okay, here are 5 jokes: Why don't scientists trust atoms? Because they make up everything! I told my wife she was drawing her eyebrows too high. She looked surprised. What do you call a lazy kangaroo? Pouch potato! Want to hear a joke about construction? I'm still working on it. Why did the scarecrow win an award?

    Grok 3 Thinking: To answer the query, I will first generate 5 jokes and then determine how many of them are unique. Here are the jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Why did the scarecrow win an award? Because he was outstanding in his field.

    Every model's answer to this prompt

Price and specs

Pick Gemini 2.5 Pro Experimental. In 44 blind votes, Gemini 2.5 Pro Experimental wins 78% of the time. That's not luck. Pick Gemini 2.5 Pro Experimental for Image Generation, Web Design. Pick Grok 3 Thinking for Reasoning.

Gemini 2.5 Pro Experimental and Grok 3 Thinking compared across 12 shared prompts
SpecGemini 2.5 Pro ExperimentalGrok 3 Thinking
Win rate78%23%
Input price$1/M tokens—
Output price$2/M tokens—
Context window1.0M tokens128K tokens
WeightsClosed—
Free API (OpenRouter)No—
ReleasedMar 2025Feb 2025
MMLU90.0%86.2%
At 10M a month$10.00$10.00–not listed
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it2 hosts
Gemini 2.5 Pro Experimental2 hosts
HostInOutContextUptime
  • Google Vertex AI$1.25 in·$10.00 out·1M·97.1% up
  • Google AI Studio$1.25 in·$10.00 out·1M·99.4% up
Grok 3 Thinking

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between Gemini 2.5 Pro Experimental and Grok 3 Thinking?

Gemini 2.5 Pro Experimental is developed by Google AI while Grok 3 Thinking is developed by xAI. Gemini 2.5 Pro Experimental has a 1.0M token context window vs Grok 3 Thinking's 128K. in 44 community votes on Rival, Gemini 2.5 Pro Experimental wins 78% of head-to-head matchups. These results are based on blind head-to-head voting across 12 challenges.

Which is better, Gemini 2.5 Pro Experimental or Grok 3 Thinking?

Based on 44 community votes on Rival, Gemini 2.5 Pro Experimental wins 78% of head-to-head matchups against Grok 3 Thinking. Gemini 2.5 Pro Experimental is strongest in Web Design, Image Generation. However, Grok 3 Thinking leads in Reasoning.

How are Gemini 2.5 Pro Experimental vs Grok 3 Thinking votes collected on Rival?

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. 44 votes have been collected for this pair across 12 challenges. All vote data is part of Rival's open dataset.

More comparisons

Against the newest arrivals

  • Gemini 2.5 Pro Experimental vs Step 5 PreviewLanded Oct 2026
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  • Grok 3 Thinking vs Mistral Large 4Landed Oct 2026
  • Gemini 2.5 Pro Experimental vs GPT-6.1 SolLanded Sep 2026
  • Grok 3 Thinking vs Claude Sonnet 5.5Landed Sep 2026
  • Gemini 2.5 Pro Experimental vs Solar Mini 4Landed Sep 2026
  • Grok 3 Thinking vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Gemini 2.5 Pro Experimental vs Gemini 2.5 Flash PreviewVersion compare
  • Gemini 2.5 Pro Experimental vs Gemini 3.8 FlashSame lab
  • Grok 3 Thinking vs Grok 4.7Same lab
  • Grok 3 Thinking vs Grok 4.6Version compare
  • Gemini 2.5 Pro Experimental vs MiMo-V2-ProSame size
  • Grok 3 Thinking vs MiMo-V2.5New provider
  • Gemini 2.5 Pro Experimental vs MiMo-V2.5-ProSame size
  • Grok 3 Thinking vs MiMo-V2.6-FlashNew provider

Model pages

  • Gemini 2.5 Pro Experimental44 outputs, specs and price
  • Grok 3 Thinking14 outputs, specs and price
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