DeepSeek Prover V2 vs 
Laguna XS 2.1 (free)
Laguna XS 2.1 (free) has a larger context window than DeepSeek Prover V2 (262K tokens vs 164K tokens).
Random Tailwind Webapp
Pick a niche, then ship a webapp for it. Tailwind, one file, model's choice.
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Which answer wins?
Written rounds
1 promptThree minutes of stand-up. Puns are banned.
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.
Laguna XS 2.1 (free): [Opening] Walks on stage, adjusts mic "So, I’ve been trying to disconnect from technology lately. Which is funny, because my phone is literally trying to disconnect from me. It keeps showing me this little red badge that says, ‘Battery at 5%.’
Price and specs
| Spec | DeepSeek Prover V2 | Laguna XS 2.1 (free) |
|---|---|---|
| Input price | Free | Free |
| Output price | Free | Free |
| Context window | 164K tokens | 262K tokens |
| Weights | Open | — |
| Free API (OpenRouter) | No | Yes (1 provider) |
| Released | Apr 2025 | Jul 2026 |
| At 10M a month | $0 | $0 |
Input tokens at list price. No caching, no batch discount.
Where to run it
DeepSeek Prover V2
No hosts listed on OpenRouter.
Laguna XS 2.1 (free)1 host
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between DeepSeek Prover V2 and Laguna XS 2.1 (free)?
DeepSeek Prover V2 is developed by DeepSeek while Laguna XS 2.1 (free) is developed by Poolside. DeepSeek Prover V2 has a 164K token context window vs Laguna XS 2.1 (free)'s 262K. You can compare their actual outputs across 4 challenges on Rival to see how they differ in practice.
Which is better, DeepSeek Prover V2 or Laguna XS 2.1 (free)?
It depends on your use case. DeepSeek Prover V2 and Laguna XS 2.1 (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 4 challenges so you can judge which fits your needs best.
How much does DeepSeek Prover V2 cost compared to Laguna XS 2.1 (free)?
DeepSeek Prover V2 costs $0/M input tokens and Laguna XS 2.1 (free) costs $0/M input tokens. Laguna XS 2.1 (free) is $0.00/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 DeepSeek Prover V2 and Laguna XS 2.1 (free) on Rival?
This page shows a side-by-side comparison of DeepSeek Prover V2 and Laguna XS 2.1 (free) 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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