Claude Opus 5.5 vs 
DeepSeek Prover V2
DeepSeek Prover V2 is cheaper than Claude Opus 5.5 at $0/M vs $4/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
1 promptThree minutes of stand-up. Puns are banned.
Claude Opus 5.5: "Unexpected Item" (walks out, adjusts mic) I've reached the age where the most stressful relationship in my life is with the self-checkout machine at the grocery store. Because at some point, the grocery store fired the cashier and gave me the job. And I didn't apply!
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 Opus 5.5 | DeepSeek Prover V2 |
|---|---|---|
| Input price | $4/M tokens | Free |
| Output price | $20/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 | $40.00 | $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 28 Sep 2026.
Common questions
What is the difference between Claude Opus 5.5 and DeepSeek Prover V2?
Claude Opus 5.5 is developed by Anthropic while DeepSeek Prover V2 is developed by DeepSeek. Claude Opus 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 Opus 5.5 or DeepSeek Prover V2?
It depends on your use case. Claude Opus 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 Opus 5.5 cost compared to DeepSeek Prover V2?
Claude Opus 5.5 costs $4/M input tokens and DeepSeek Prover V2 costs $0/M input tokens. DeepSeek Prover V2 is $4.00/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 Opus 5.5 and DeepSeek Prover V2 on Rival?
This page shows a side-by-side comparison of Claude Opus 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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