Gemini 2.5 Flash Preview 05-20 is cheaper than GPT-5 at $0.15/M vs $1.25/M input tokens.
Pokémon battle screen you can actually click. One HTML file.
Which answer wins?
Three minutes of stand-up. Puns are banned.
Gemini 2.5 Flash Preview 05-20: Alright, alright, settle down you magnificent collection of human beings! You look good tonight. Not just good, but… like you've all collectively decided to nail the 'I'm here to laugh and avoid talking about my Monday' look. And I respect that. Seriously though, it's great to be back on stage. I'm living the dream.
GPT-5: I tried to get my life together, so I bought a smartwatch. Nothing says “I’m taking control” like strapping a tiny judgmental coach to your wrist. It buzzes every hour like, “Time to stand!” I’m like, “I’m on a bus.” It’s like, “Stand emotionally.” It tracks everything. Sleep, stress, calories, my self-esteem.
Five jokes on demand, then count how many were actually different.
Gemini 2.5 Flash Preview 05-20: Here are 5 jokes for you: 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-5: I told my suitcases we’re not going on vacation this year. Now I’m dealing with emotional baggage. Parallel lines have so much in common. It’s a shame they’ll never meet. Why do programmers prefer dark mode? Because light attracts bugs. I ordered a chicken and an egg online. I’ll let you know which comes first.
Not enough votes to call it. On the specs, GPT-5 has the edge: bigger model tier, newer. Gemini 2.5 Flash Preview 05-20 costs 17x less per token.
| Spec | ||
|---|---|---|
| Input price | $0.15/M tokens | $1.25/M tokens |
| Output price | $0.6/M tokens | $10/M tokens |
| Context window | 1.0M tokens | 400K tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Aug 2025 |
| At 10M a month | $1.50 | $12.50 |
Input tokens at list price. No caching, no batch discount.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 7 Oct 2026.
Gemini 2.5 Flash Preview 05-20 is developed by Google AI while GPT-5 is developed by OpenAI. Gemini 2.5 Flash Preview 05-20 has a 1.0M token context window vs GPT-5's 400K. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
It depends on your use case. Gemini 2.5 Flash Preview 05-20 and GPT-5 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.
Gemini 2.5 Flash Preview 05-20 costs $0.15/M input tokens and GPT-5 costs $1.25/M input tokens. Gemini 2.5 Flash Preview 05-20 is $1.10/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
This page shows a side-by-side comparison of Gemini 2.5 Flash Preview 05-20 and GPT-5 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.