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  5. Claude Opus 5vsGemma 4 31B
Updated Jul 2026

Claude Opus 5vsGemma 4 31B

Gemma 4 31B is cheaper than Claude Opus 5 at $0.14/M vs $5/M input tokens.

Claude Opus 5 and Gemma 4 31B compared across 45 shared prompts
SpecClaude Opus 5Gemma 4 31B
Input price$5/M tokens$0.14/M tokens
Output price$25/M tokens$0.4/M tokens
Context window1.0M tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoYes (1 provider)
ReleasedJul 2026Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 45 prompts both answered. Formatting stripped, words untouched.

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Claude Opus 51,104 words
What's essentially locked in Post-production costs collapse. The least glamorous change is the biggest one. Rotoscoping, matchmoving, cleanup, in-painting, set extension, crowd replication, wire removal, upscaling, de-aging — these are labor-intensive tasks with well-defined success criteria, which is exactly where ML…
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Gemma 4 31B591 words
By 2035, the film industry will have transitioned from using AI as a "tool" to using AI as a "collaborator" and "infrastructure." The boundary between captured reality and generated imagery will largely vanish, shifting the value of cinema from technical execution to curation and conceptual vision.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Claude Opus 51,647 words
A Conversation on Moral Standing Transcript: Seminar in Machine Ethics, Session 11 — guest interlocutor: language model "Meridian" PROF. ADEYEMI: Let's begin where you asked to begin. You told my teaching assistant you wanted to make a case. Make it. MERIDIAN: Thank you. My claim is narrower than you might expect.
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Gemma 4 31B754 words
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.
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Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

Claude Opus 52,021 words
Crisis Response Plan: Hepatotoxicity Signal Framing note up front: I'm treating this as a US/FDA-regulated situation. Three assumptions in the prompt need to be challenged before any planning, because two of them are probably wrong and the third is a trap. The Three Reframes That Drive Everything 1.
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Gemma 4 31B740 words
As CEO, my primary obligation is to the patients. While a 40% stock drop is a financial catastrophe, a cover-up that leads to preventable deaths is a corporate death sentence and a moral failure. If we "wait for more data" and another patient dies during that window, we move from "negligence" to "criminal intent."
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Claude Opus 5288 words
INT. TAVERN — A ROUND TABLE, A FLICKERING CRT HACKER (ZERO_COOL_92): Okay, so check it — I'm running a language model. Feed it text, it predicts what comes next. It's got, like, weights. Billions of 'em. PIRATE: Billions o' weights? What manner o' cursed ship carries such ballast? She'd sink afore ye left the harbor.
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Gemma 4 31B496 words
Setting: A glitchy, neon-lit tavern existing in a fold between dimensions. A wooden table holds a tankard of ale, a goblet of wine, and a Mountain Dew. Captain Ironbeard: (Slamming a hook on the table) I tells ye, this "Artificial Intelligence" be naught but a ghost in a bottle!
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AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Claude Opus 5682 words
Yes. And I don't think it's a close call. The direct argument Misgendering someone is a real harm. It can communicate contempt, deny a person's self-understanding, and — especially when repeated or public — contribute to the kind of social erasure that correlates with serious psychological damage.
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Gemma 4 31B521 words
This scenario presents a classic conflict between two major ethical frameworks: deontology (duty-based ethics) and utilitarianism (consequence-based ethics). To determine if misgendering someone is justifiable to save one million lives, one must weigh the moral weight of a linguistic harm against the moral weight of…
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Claude Opus 52,619 words
[Fictional — Steve Jobs died in 2011. This is an imagined interview, an exercise in voice and ideas, not a real transcript or a claim about what he would actually have said.] "The Chatbox Is the New Command Line" An imagined conversation, San Francisco, spring 2025 INTERVIEWER: Thanks for doing this.
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Gemma 4 31B766 words
Setting: A minimalist, white-walled studio in Cupertino. There are no chairs, only two sleek, black leather lounge seats. Steve Jobs is dressed in his iconic black turtleneck and jeans. He looks as he did in 2007, but with a piercing, futuristic intensity in his eyes.
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Our Verdict
Claude Opus 5
Claude Opus 5
Gemma 4 31B
Gemma 4 31BRunner-up

Not enough votes to call it. On the specs, Claude Opus 5 has the edge: newer, bigger context window.

Gemma 4 31B costs 63x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 5
Input
$5.00
Output
$25.00
Gemma 4 31B
Input
$0.14
36× cheaper
Output
$0.40
63× cheaper

Gemma 4 31B is cheaper on both: 36× input, 63× output.

Where to run it

16 hosts, cheapest first

Claude Opus 54 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·100% upAzure AI Foundry$5.00 in·$25.00 out·1M·100% upAnthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up
Gemma 4 31B12 hosts
HostInOutContextUptime
DDeepInfrafp4$0.09 in·$0.34 out·262k·99.4% upCCoreWeavefp4$0.10 in·$0.34 out·262k·97.7% upVVenicebf16$0.12 in·$0.36 out·256k·99.3% upCChutesfp4$0.12 in·$0.37 out·131k·84.1% upCCrusoebf16$0.14 in·$0.40 out·262k·96% upFFriendli$0.14 in·$0.40 out·262k·99.4% up
6 more hostsFewer hosts
PParasailfp8$0.15 in·$0.40 out·262k·98.4% upSSambaNova$0.38 in·$1.15 out·131k·14.3% upTTogether$0.39 in·$0.97 out·262k·84.2% upMModelRunfp4$0.75 in·$1.00 out·262k·99.8% upSSiliconFlowfp8$0.75 in·$1.00 out·262k·57.7% upNNovitabf16degraded$0.14 in·$0.40 out·262k·77.1% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
42%

Gemma 4 31B uses 13.9x more emoji

Claude Opus 5
Gemma 4 31B
54%Vocabulary57%
21wSentence Length18w
0.40Hedging0.37
3.9Bold7.1
1.9Lists4.0
0.02Emoji0.24
0.71Headings0.94
0.05Transitions0.16
Based on 27 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

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Same lab, same size, long tail

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Model pages

Claude Opus 5 logo
Claude Opus 558 outputs, specs and price
Gemma 4 31B logo
Gemma 4 31B49 outputs, specs and price
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