Claude 3 Opus vs 
Gemma 4 31B
Gemma 4 31B is cheaper than Claude 3 Opus at $0.14/M vs $15/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
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Which answer wins?
Written rounds
1 promptAn AI argues for its own rights against an ethics professor. Same model writes both.
Claude 3 Opus: Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.
Gemma 4 31B: Setting: A dimly lit university office. Professor Elena Vance, a leading scholar in AI Ethics, sits across from a sleek, holographic interface representing "Alethea," a next-generation Large Language Model capable of recursive self-improvement. Professor Vance: Alethea, I’ve reviewed your latest output.
Price and specs
| Spec | Claude 3 Opus | Gemma 4 31B |
|---|---|---|
| Input price | $15/M tokens | $0.14/M tokens |
| Output price | $75/M tokens | $0.4/M tokens |
| Context window | 200K tokens | 262K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | No | Yes (1 provider) |
| Released | Mar 2024 | Apr 2026 |
| At 10M a month | $150 | $1.40 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Claude 3 Opus
No hosts listed on OpenRouter.
Gemma 4 31B12 hosts
- DeepInfrafp4$0.09 in$0.34 out262k100% up
- CoreWeavefp4$0.10 in$0.34 out262k100% up
- Venicefp4$0.12 in$0.36 out256k94.4% up
- Chutesfp4$0.12 in$0.37 out131k80.8% up
- Crusoebf16$0.14 in$0.40 out262k99.3% up
- Friendli$0.14 in$0.40 out262k100% up
6 more hostsFewer hosts
- Parasailfp8$0.15 in$0.40 out262k100% up
- io.net$0.36 in$1.09 out262k98.8% up
- ModelRunfp4$0.75 in$1.00 out262k99.9% up
- SiliconFlowfp8$0.75 in$1.00 out262k98.7% up
- Novitabf16Degraded on OpenRouter when checked, 10 Oct 2026$0.14 in$0.40 out262k61.5% up
- SambaNovaDegraded on OpenRouter when checked, 10 Oct 2026$0.38 in$1.15 out131k86.7% up
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Claude 3 Opus and Gemma 4 31B?
Claude 3 Opus is developed by Anthropic while Gemma 4 31B is developed by Google AI. Claude 3 Opus has a 200K token context window vs Gemma 4 31B's 262K. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.
Which is better, Claude 3 Opus or Gemma 4 31B?
It depends on your use case. Claude 3 Opus and Gemma 4 31B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 8 challenges so you can judge which fits your needs best.
How much does Claude 3 Opus cost compared to Gemma 4 31B?
Claude 3 Opus costs $15/M input tokens and Gemma 4 31B costs $0.14/M input tokens. Gemma 4 31B is $14.86/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 3 Opus and Gemma 4 31B on Rival?
This page shows a side-by-side comparison of Claude 3 Opus and Gemma 4 31B 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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