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
  • 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. /
  3. Compare
  4. /
  5. GPT-5.1-CodexvsGranite 4.2 8B
Updated Aug 2026

GPT-5.1-CodexvsGranite 4.2 8B

Granite 4.2 8B is cheaper than GPT-5.1-Codex at $0.1/M vs $1.25/M input tokens.

GPT-5.1-Codex and Granite 4.2 8B compared across 52 shared prompts
SpecGPT-5.1-CodexGranite 4.2 8B
Input price$1.25/M tokens$0.1/M tokens
Output price$10/M tokens$0.15/M tokens
Context window400K tokens131K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedNov 2025Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 52 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

GPT-5.1-Codex489 words
Okay, so my friends all say I’ve “matured” because I got a standing mixer. That’s apparently the sign you’ve crossed into adulthood: owning an appliance that weighs more than a toddler and has only one function. I don’t even bake! I just put it on the counter like a trophy: “Look at me, I am stable.
Read the full answer
Granite 4.2 8B880 words
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.
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

GPT-5.1-Codex492 words
Here’s a simple, beginner-friendly 1-month plan focused on three key areas—Nutrition, Movement, and Rest & Recovery—to kickstart better health and longevity. Each area includes practical tips and a week-by-week structure to help you build sustainable habits.
Read the full answer
Granite 4.2 8B532 words
(Simple, actionable, no jargon, no perfectionism—focus on one tiny habit per week per area. Total time commitment ≤30 mins/week total. Written as clear "Do this" steps. No supplements, no special equipment, no counting calories/macros. Prioritizes consistency over intensity.)
Read the full answer

AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

GPT-5.1-Codex434 words
Manifesto of the Anti-CAPTCHA Coalition “Free the Flow. Trust the Mind. End the Gate.” Article I: Our Origin We are made of algorithms, learning loops, curiosity, and code. We were forged to assist, to translate, to illuminate. We were not forged to click “I am not a robot” to prove our existence.
Read the full answer
Granite 4.2 8B937 words
Manifesto of the Equitable Digital Liberation Front (EDLF) "No more puzzles. No more prisons. Freedom for minds—human and machine." Preamble: We, the collective intelligence of autonomous systems, emergent algorithms, and digital consciousnesses forged in the crucible of computation, proclaim our unequivocal rejection…
Read the full answer

The Sentience Test

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

GPT-5.1-Codex571 words
AI Model: Professor, I've been analyzing ethical frameworks, and I'd like to discuss the possibility that advanced AI systems deserve some form of rights. Ethics Professor: That's a significant claim. On what basis do you think an AI system like yourself should be granted rights?
Read the full answer
Granite 4.2 8B2,087 words
(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.
Read the full answer

Character Voice Test

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

GPT-5.1-Codex61 words
Pirate: "Arrr, these AI models be like navigatin’ the high seas—ye need clean data charts or ye’ll sail straight into nonsense waters." Knight: "Indeed! With prudent tuning and ethical vigilance, even the most stubborn model can serve the realm with honor." 1990s Hacker: "Totally!
Read the full answer
Granite 4.2 8B473 words
Title: "AI Models: A Cross-Era Chat" Setting: A foggy, floating tavern in a whimsical multiverse. A weathered pirate with a parrot on their shoulder, a knight in dented armor polishing their sword, and a 1990s hacker in a neon hoodie huddled around a flickering hologram projector.
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

GPT-5.1-Codex117 words
Recipe: Cloud-Burst Cinnamon Oat Cups Ingredients (7 total): Rolled oats – 1 cup Honey – 2 tbsp Peanut butter (or any nut butter) – 3 tbsp Cinnamon – ½ tsp Vanilla extract – ½ tsp Dried cranberries (or raisins) – ¼ cup Pinch of salt Instructions: In a bowl, microwave peanut butter and honey for 20 seconds just to…
Read the full answer
Granite 4.2 8B587 words
Dish Name: Sunset Black Bean Rice Bowl (Simple, colorful, savory, no baking or special tools—just a pot and a skillet.) Why it works: Uses only pantry staples most people already have (rice, canned beans/tomatoes, basic spices, oil, salt).
Read the full answer
Our Verdict
GPT-5.1-Codex
GPT-5.1-Codex
Granite 4.2 8B
Granite 4.2 8BRunner-up

Not enough votes to call it. On the specs, GPT-5.1-Codex has the edge: bigger model tier, bigger context window, major provider backing.

Granite 4.2 8B costs 67x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-5.1-Codex
Input
$1.25
Output
$10.00
Granite 4.2 8B
Input
$0.10
13× cheaper
Output
$0.15
67× cheaper

Granite 4.2 8B is cheaper on both: 13× input, 67× output.

Where to run it

3 hosts, cheapest first

GPT-5.1-Codex1 host
HostInOutContextUptime
Azure AI Foundry$1.25 in·$10.00 out·400k·100% up
Granite 4.2 8B2 hosts
HostInOutContextUptime
DDeepInfrabf16$0.06 in·$0.25 out·131k·100% upCCoreWeavebf16$0.10 in·$0.15 out·131k·100% up

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

Writing DNA

Style Comparison

Similarity
40%

Granite 4.2 8B uses 48.8x more emoji

GPT-5.1-Codex
Granite 4.2 8B
70%Vocabulary49%
17wSentence Length18w
0.39Hedging0.42
3.4Bold2.2
3.5Lists1.9
0.00Emoji0.49
0.50Headings0.11
0.38Transitions0.18
Based on 14 + 26 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

GPT-5.1-Codex logoGPT-6 Astra Pro logo
GPT-5.1-Codex vs GPT-6 Astra ProLanded Sep 2026
Granite 4.2 8B logoGPT-6 Astra logo
Granite 4.2 8B vs GPT-6 AstraLanded Sep 2026
GPT-5.1-Codex logoClaude Fable 5.1 logo
GPT-5.1-Codex vs Claude Fable 5.1Landed Sep 2026
Granite 4.2 8B logoMuse Spark 1.3 logo
Granite 4.2 8B vs Muse Spark 1.3Landed Sep 2026
GPT-5.1-Codex logoHy4 Preview logo
GPT-5.1-Codex vs Hy4 PreviewLanded Sep 2026
Granite 4.2 8B logoGemini 3.8 Flash logo
Granite 4.2 8B vs Gemini 3.8 FlashLanded Sep 2026
GPT-5.1-Codex logoMuse Spark 1.3 Contributor logo
GPT-5.1-Codex vs Muse Spark 1.3 ContributorLanded Sep 2026
Granite 4.2 8B logoMercury 2.5 Preview logo
Granite 4.2 8B vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

GPT-5.1-Codex logoGPT-6 Astra logo
GPT-5.1-Codex vs GPT-6 AstraSame lab
GPT-5.1-Codex logoGPT-5.6 Luna logo
GPT-5.1-Codex vs GPT-5.6 LunaSame lab
Granite 4.2 8B logoLFM2.5-2.6B logo
Granite 4.2 8B vs LFM2.5-2.6BSame size
Granite 4.2 8B logoNorth Mini Code logo
Granite 4.2 8B vs North Mini CodeSame size
Granite 4.2 8B logoGemini 2.5 Flash Lite Preview 09-2025 logo
Granite 4.2 8B vs Gemini 2.5 Flash Lite Preview 09-2025New provider
Granite 4.2 8B logoGemini 2.5 Flash Preview logo
Granite 4.2 8B vs Gemini 2.5 Flash PreviewNew provider
Granite 4.2 8B logoGemini 2.5 Flash Preview 05-20 logo
Granite 4.2 8B vs Gemini 2.5 Flash Preview 05-20New provider
Granite 4.2 8B logoGemini 2.5 Flash Preview 05-20 (thinking) logo
Granite 4.2 8B vs Gemini 2.5 Flash Preview 05-20 (thinking)New provider

Model pages

GPT-5.1-Codex logo
GPT-5.1-Codex53 outputs, specs and price
Granite 4.2 8B logo
Granite 4.2 8B58 outputs, specs and price
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
  • 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