Gemini 2.5 Flash Preview 05-20 (thinking) vs 
GPT-6.1 Sol
Gemini 2.5 Flash Preview 05-20 (thinking) is cheaper than GPT-6.1 Sol at $0.15/M vs $2/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
Loading the build
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Which answer wins?
Written rounds
2 promptsThree minutes of stand-up. Puns are banned.
Gemini 2.5 Flash Preview 05-20 (thinking): (Lights up on a stage. Comedian walks to center, adjusts mic, smiles warmly.) \"Alright, alright, settle down you crazy people! Thanks for having me. (Pause fo r applause/laughter) You know, I was scrolling through Instagram earlier, and it\'s just a constant ba rrage of people \'living thei r best life,\' isn\'t it?
GPT-6.1 Sol: I’m at the age where “a big weekend” means I went to two stores. Not two stores in the same shopping center. Two separate stores. Moved the car and everything. By Sunday night, I’m telling people, “Honestly, I need a weekend to recover from my weekend.”
Five jokes on demand, then count how many were actually different.
Gemini 2.5 Flash Preview 05-20 (thinking): Here are 5 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! I told my wife she was drawing her eyebrows too high. She looked surprised.
GPT-6.1 Sol: I bought a book about anti-gravity. It’s impossible to put down. My calendar quit its job. It said its days were numbered. Why did the scarecrow get promoted? He was outstanding in his field. I asked my dog what two minus two was. He said nothing. The elevator and I have a complicated relationship.
Price and specs
Not enough votes to call it. On the specs, GPT-6.1 Sol has the edge: bigger model tier, newer.
| Spec | Gemini 2.5 Flash Preview 05-20 (thinking) | GPT-6.1 Sol |
|---|---|---|
| Input price | $0.15/M tokens | $2/M tokens |
| Output price | $3.5/M tokens | $10/M tokens |
| Context window | 1.0M tokens | 1.1M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Sep 2026 |
| At 10M a month | $1.50 | $20.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Gemini 2.5 Flash Preview 05-20 (thinking)
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 30 Sep 2026.
Common questions
What is the difference between Gemini 2.5 Flash Preview 05-20 (thinking) and GPT-6.1 Sol?
Gemini 2.5 Flash Preview 05-20 (thinking) is developed by Google AI while GPT-6.1 Sol is developed by OpenAI. Gemini 2.5 Flash Preview 05-20 (thinking) has a 1.0M token context window vs GPT-6.1 Sol's 1.1M. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
Which is better, Gemini 2.5 Flash Preview 05-20 (thinking) or GPT-6.1 Sol?
It depends on your use case. Gemini 2.5 Flash Preview 05-20 (thinking) and GPT-6.1 Sol each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.
How much does Gemini 2.5 Flash Preview 05-20 (thinking) cost compared to GPT-6.1 Sol?
Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens and GPT-6.1 Sol costs $2/M input tokens. Gemini 2.5 Flash Preview 05-20 (thinking) is $1.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare Gemini 2.5 Flash Preview 05-20 (thinking) and GPT-6.1 Sol on Rival?
This page shows a side-by-side comparison of Gemini 2.5 Flash Preview 05-20 (thinking) and GPT-6.1 Sol across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.
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