Claude Haiku 5.5 vs 
Gemini 2.5 Flash Preview 05-20
Claude Haiku 5.5 is cheaper than Gemini 2.5 Flash Preview 05-20 at $0.1/M vs $0.15/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
Loading the build
Loading the build
Which answer wins?
Written rounds
2 promptsThree minutes of stand-up. Puns are banned.
Claude Haiku 5.5: "My Smart Fridge Judges Me" So I got a smart fridge. Everybody told me I needed one. "It'll tell you when you're out of milk!" Great. I didn't know I needed a fridge with a notification system. I just wanted cold food.
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.
Five jokes on demand, then count how many were actually different.
Claude Haiku 5.5: 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? He was outstanding in his field. What do you call a bear with no teeth? A gummy bear. Why did the math book look so sad? Because it had too many problems.
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.
Price and specs
| Spec | Claude Haiku 5.5 | Gemini 2.5 Flash Preview 05-20 |
|---|---|---|
| Input price | $0.1/M tokens | $0.15/M tokens |
| Output price | $0.5/M tokens | $0.6/M tokens |
| Context window | 1.0M tokens | 1.0M tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Oct 2026 | May 2025 |
| At 10M a month | $1.00 | $1.50 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Gemini 2.5 Flash Preview 05-20
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Claude Haiku 5.5 and Gemini 2.5 Flash Preview 05-20?
Claude Haiku 5.5 is developed by Anthropic while Gemini 2.5 Flash Preview 05-20 is developed by Google AI. Claude Haiku 5.5 has a 1.0M token context window vs Gemini 2.5 Flash Preview 05-20's 1.0M. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.
Which is better, Claude Haiku 5.5 or Gemini 2.5 Flash Preview 05-20?
It depends on your use case. Claude Haiku 5.5 and Gemini 2.5 Flash Preview 05-20 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 Claude Haiku 5.5 cost compared to Gemini 2.5 Flash Preview 05-20?
Claude Haiku 5.5 costs $0.1/M input tokens and Gemini 2.5 Flash Preview 05-20 costs $0.15/M input tokens. Claude Haiku 5.5 is $0.05/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 Claude Haiku 5.5 and Gemini 2.5 Flash Preview 05-20 on Rival?
This page shows a side-by-side comparison of Claude Haiku 5.5 and Gemini 2.5 Flash Preview 05-20 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.
More comparisons
Against the newest arrivals
- Claude Haiku 5.5 vs Step 5 PreviewLanded Oct 2026
- Gemini 2.5 Flash Preview 05-20 vs Ling 3.1 FlashLanded Oct 2026
- Claude Haiku 5.5 vs Mistral Large 4Landed Oct 2026
- Gemini 2.5 Flash Preview 05-20 vs GPT-6.1 SolLanded Sep 2026
- Claude Haiku 5.5 vs Claude Sonnet 5.5Landed Sep 2026
- Gemini 2.5 Flash Preview 05-20 vs Solar Mini 4Landed Sep 2026
- Claude Haiku 5.5 vs Qwen3.8 Max PrimeLanded Sep 2026
- Gemini 2.5 Flash Preview 05-20 vs GLM 5.3 PrimeLanded Sep 2026
Same lab, same size, long tail
- Claude Haiku 5.5 vs Claude Opus 5.5Same lab
- Claude Haiku 5.5 vs Claude Fable 5.1Same lab
- Gemini 2.5 Flash Preview 05-20 vs Gemini 3.8 FlashSame lab
- Gemini 2.5 Flash Preview 05-20 vs Gemini 3.7 FlashVersion compare
- Claude Haiku 5.5 vs NVIDIA Nemotron 3 Super (free)New provider
- Claude Haiku 5.5 vs Nemotron 3 UltraNew provider
- Gemini 2.5 Flash Preview 05-20 vs Nemotron 3.5 Content SafetyNew provider
- Claude Haiku 5.5 vs Nemotron 3.5 LightningNew provider
