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  1. Home/
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  3. Gemini 2.5 Flash Preview 05-20 vs Qwen3.5 Flash
Updated Feb 2026

Gemini 2.5 Flash Preview 05-20 vs Qwen3.5 Flash

Qwen3.5 Flash 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
Gemini 2.5 Flash Preview 05-20
Loading the build
Qwen3.5 Flash

Which answer wins?

Written rounds

2 prompts
  • 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.

    Qwen3.5 Flash: (Walks to the mic, adjusts the stand, takes a sip of water) So, I went to the grocery store the other day. I realize now that going to the grocery store isn't a chore anymore. It’s a tactical simulation. We don't just walk in and get milk. We navigate a gauntlet. Especially the self-checkout.

    Every model's answer to this prompt
  • 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.

    Qwen3.5 Flash: Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why don't scientists trust atoms? Because they make up everything. What do you call a bear with no teeth? A gummy bear. Why did the bicycle fall over? Because it was two-tired.

    Every model's answer to this prompt

Price and specs

Gemini 2.5 Flash Preview 05-20 and Qwen3.5 Flash compared across 11 shared prompts
SpecGemini 2.5 Flash Preview 05-20Qwen3.5 Flash
Input price$0.15/M tokens$0.1/M tokens
Output price$0.6/M tokens$0.4/M tokens
Context window1.0M tokens1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMay 2025Feb 2026
At 10M a month$1.50$1.50$1.00$1.00
1M10M100M1B10M tokens

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

Where to run it1 host
Gemini 2.5 Flash Preview 05-20

No hosts listed on OpenRouter.

Qwen3.5 Flash1 host
HostInOutContextUptime
  • Alibaba Cloud$0.07 in·$0.26 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 11 Oct 2026.

Common questions

What is the difference between Gemini 2.5 Flash Preview 05-20 and Qwen3.5 Flash?

Gemini 2.5 Flash Preview 05-20 is developed by Google AI while Qwen3.5 Flash is developed by Qwen. Gemini 2.5 Flash Preview 05-20 has a 1.0M token context window vs Qwen3.5 Flash's 1.0M. 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 or Qwen3.5 Flash?

It depends on your use case. Gemini 2.5 Flash Preview 05-20 and Qwen3.5 Flash 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 cost compared to Qwen3.5 Flash?

Gemini 2.5 Flash Preview 05-20 costs $0.15/M input tokens and Qwen3.5 Flash costs $0.1/M input tokens. Qwen3.5 Flash 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 Gemini 2.5 Flash Preview 05-20 and Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of Gemini 2.5 Flash Preview 05-20 and Qwen3.5 Flash 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

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  • Qwen3.5 Flash vs Claude Sonnet 5.5Landed Sep 2026
  • Gemini 2.5 Flash Preview 05-20 vs Solar Mini 4Landed Sep 2026
  • Qwen3.5 Flash vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • 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
  • Qwen3.5 Flash vs Qwen3.5 122B A10BVersion compare
  • Qwen3.5 Flash vs Qwen3.8 Omni FlashSame lab
  • Qwen3.5 Flash vs Solar Pro 3New provider
  • Gemini 2.5 Flash Preview 05-20 vs Solar Pro 4New provider
  • Qwen3.5 Flash vs Sonar Pro SearchNew provider
  • Qwen3.5 Flash vs Sonoma Dusk AlphaNew provider

Model pages

  • Gemini 2.5 Flash Preview 05-2011 outputs, specs and price
  • Qwen3.5 Flash53 outputs, specs and price
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