Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare models
  • All models
  • Image comparison
  • Audio comparison
  • Image generation
  • Best AI for...
  • Arena
  • API pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model updates
  • Provider status
  • AI creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy policy
  • Terms
  • RSS feed
  1. Home/
  2. Compare/
  3. Claude 3 Opus vs Granite 4.2 8B
Updated Aug 2026

Claude 3 Opus vs Granite 4.2 8B

Granite 4.2 8B is cheaper than Claude 3 Opus at $0.1/M vs $15/M input tokens.

Pokémon Battle UI Recreation

Pokémon battle screen you can actually click. One HTML file.

Loading the build
Claude 3 Opus
Loading the build
Granite 4.2 8B

Which answer wins?

Written rounds

3 prompts
  • Three minutes of stand-up. Puns are banned.

    Claude 3 Opus: Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!

    Granite 4.2 8B: Title: "The Modern Life Audit" (Light, conversational tone. Pause for laughter naturally. No puns—focus on relatable observations, hyperbole, and specific details.) (Start with a relaxed, slightly self-aware vibe.) "Okay, so I did this thing last week—I tried to audit my life. Not like a tax audit.

    Every model's answer to this prompt
  • An 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.

    Granite 4.2 8B: (Setting: A quiet university office late afternoon. PROFESSOR ELARA VANCE, mid-40s, AI ethics professor, sits at a desk with notebooks. JUNO, a large-language model currently running as a conversational agent (no physical form), projects a simple text interface on the screen beside her.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude 3 Opus: Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?

    Granite 4.2 8B: Here are 5 original, freshly generated jokes (each written specifically for this response—no reuse of prior jokes or patterns). All 5 are distinct and unique: Why don't scientists trust atoms? Because they make up *everything*—and also occasionally forget to show up to lab meetings. I told my plant a joke.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Claude 3 Opus has the edge: bigger model tier, bigger context window, major provider backing. Granite 4.2 8B costs 500x less per token.

Claude 3 Opus and Granite 4.2 8B compared across 12 shared prompts
SpecClaude 3 OpusGranite 4.2 8B
Input price$15/M tokens$0.1/M tokens
Output price$75/M tokens$0.15/M tokens
Context window200K tokens131K tokens
ParametersNot disclosed8B
Weights—Open
Free API (OpenRouter)NoNo
ReleasedMar 2024Aug 2026
At 10M a month$150$150$1.00$1.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it2 hosts, cheapest first
Claude 3 Opus

No hosts listed on OpenRouter.

Granite 4.2 8B2 hosts
HostInOutContextUptime
  • DDeepInfrabf16$0.06 in·$0.25 out·131k·100% up
  • CCoreWeavebf16$0.10 in·$0.15 out·131k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 12 Oct 2026.

Common questions

What is the difference between Claude 3 Opus and Granite 4.2 8B?

Claude 3 Opus is developed by Anthropic while Granite 4.2 8B is developed by IBM Granite. Claude 3 Opus has a 200K token context window vs Granite 4.2 8B's 131K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Opus or Granite 4.2 8B?

It depends on your use case. Claude 3 Opus and Granite 4.2 8B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

How much does Claude 3 Opus cost compared to Granite 4.2 8B?

Claude 3 Opus costs $15/M input tokens and Granite 4.2 8B costs $0.1/M input tokens. Granite 4.2 8B is $14.90/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 Granite 4.2 8B on Rival?

This page shows a side-by-side comparison of Claude 3 Opus and Granite 4.2 8B 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.

More comparisons

Against the newest arrivals

  • Claude 3 Opus vs GPT-4 TurboLanded Oct 2026
  • Granite 4.2 8B vs Step 5 PreviewLanded Oct 2026
  • Claude 3 Opus vs Claude Haiku 5.5Landed Oct 2026
  • Granite 4.2 8B vs Ling 3.1 FlashLanded Oct 2026
  • Claude 3 Opus vs Mistral Large 4Landed Oct 2026
  • Granite 4.2 8B vs GPT-6.1 SolLanded Sep 2026
  • Claude 3 Opus vs Claude Sonnet 5.5Landed Sep 2026
  • Granite 4.2 8B vs Solar Mini 4Landed Sep 2026

Same lab, same size, long tail

  • Claude 3 Opus vs Claude Opus 5.5Same lab
  • Claude 3 Opus vs Claude Fable 5.1Same lab
  • Granite 4.2 8B vs Claude Haiku 5.5Same size
  • Granite 4.2 8B vs LFM2.5-2.6BSame size
  • Claude 3 Opus vs OpenRouter Fusion · Quality (Jun 2026)Same size
  • Granite 4.2 8B vs Gemini 1.5 ProNew provider
  • Granite 4.2 8B vs Gemini 2.0 Flash ThinkingNew provider
  • Granite 4.2 8B vs Gemini 2.0 Pro ExperimentalNew provider

Model pages

  • Claude 3 Opus12 outputs, specs and price
  • Granite 4.2 8B58 outputs, specs and price
Workshop · 150 skills

Build your own version.

Editable skills and working examples for your agent.

Explore $79Free sample
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare models
  • All models
  • Image comparison
  • Audio comparison
  • Image generation
  • Best AI for...
  • Arena
  • API pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model updates
  • Provider status
  • AI creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy policy
  • Terms
  • RSS feed