Claude Sonnet 5.5 vs 
DeepSeek Prover V2
DeepSeek Prover V2 is cheaper than Claude Sonnet 5.5 at $0/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
1 promptThree minutes of stand-up. Puns are banned.
Claude Sonnet 5.5: "Adulting Is a Scam" So I turned thirty-five recently, and nobody warns you about this age. Nobody says, "Hey, one day you'll get excited about a sponge." I was in the store, and I saw a sponge that promised it wouldn't smell. And I thought, "Finally. Someone who understands me." I bought the good sponge.
DeepSeek Prover V2: 3-Minute Stand-Up Comedy Routine Opening: Hey everyone! How's it going? You know, I've been thinking a lot about relationships lately. Not because I'm in one, but because I'm not. And that's the problem. I'm single, and I'm starting to think that my dating profile is the reason why.
Price and specs
| Spec | Claude Sonnet 5.5 | DeepSeek Prover V2 |
|---|---|---|
| Input price | $2/M tokens | Free |
| Output price | $10/M tokens | Free |
| Context window | 1.0M tokens | 164K tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Sep 2026 | Apr 2025 |
| At 10M a month | $20.00 | $0 |
Input tokens at list price. No caching, no batch discount.
Where to run it
DeepSeek Prover V2
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 29 Sep 2026.
Common questions
What is the difference between Claude Sonnet 5.5 and DeepSeek Prover V2?
Claude Sonnet 5.5 is developed by Anthropic while DeepSeek Prover V2 is developed by DeepSeek. Claude Sonnet 5.5 has a 1.0M token context window vs DeepSeek Prover V2's 164K. You can compare their actual outputs across 6 challenges on Rival to see how they differ in practice.
Which is better, Claude Sonnet 5.5 or DeepSeek Prover V2?
It depends on your use case. Claude Sonnet 5.5 and DeepSeek Prover V2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 6 challenges so you can judge which fits your needs best.
How much does Claude Sonnet 5.5 cost compared to DeepSeek Prover V2?
Claude Sonnet 5.5 costs $2/M input tokens and DeepSeek Prover V2 costs $0/M input tokens. DeepSeek Prover V2 is $2.00/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 Sonnet 5.5 and DeepSeek Prover V2 on Rival?
This page shows a side-by-side comparison of Claude Sonnet 5.5 and DeepSeek Prover V2 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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