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. /
  3. Compare
  4. /
  5. Claude Opus 5vsTernary Bonsai 2 27B
Updated Sep 2026

Claude Opus 5vsTernary Bonsai 2 27B

Ternary Bonsai 2 27B is cheaper than Claude Opus 5 at $0.075/M vs $5/M input tokens.

Claude Opus 5 and Ternary Bonsai 2 27B compared across 9 shared prompts
SpecClaude Opus 5Ternary Bonsai 2 27B
Input price$5/M tokens$0.075/M tokens
Output price$25/M tokens$0.5/M tokens
Context window1.0M tokens262K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedJul 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 4 of the 9 prompts both answered. Formatting stripped, words untouched.

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…

Claude Opus 5413 words
Midnight Crunch Spaghetti Garlicky olive-oil pasta with toasty golden breadcrumbs — the noise it makes when you eat it is half the pleasure. Prep: 5 minutes Cook: 15 minutes Total: 20 minutes Serves: 2 generously Ingredients (7) 8 oz spaghetti (or any long pasta) ⅓ cup olive oil 6 cloves garlic, thinly sliced ½ tsp red…
Read the full answer
Ternary Bonsai 2 27B358 words
🍫 Velvet Hour Skillet Cakes A one-pan, one-pan-pour, one-lick-the-spoon kind of dessert. Fluffy, deeply chocolate, and done before your coffee goes cold. Serves: 2–3 Prep: 10 min Cook: 12–15 min Total: ~25 min The 7 Ingredients # Ingredient Amount 1 All-purpose flour ¾ cup 2 Granulated sugar ⅓ cup 3 Unsweetened cocoa…
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

Claude Opus 51,825 words
For the software engineer Start with the part you'll find suspicious and let me argue the other way. Yes, the training objective is literally "given tokens 1..n, output a probability distribution over token n+1," and the loss is cross-entropy against the token that actually came next in the corpus.
Read the full answer
Ternary Bonsai 2 27B1,636 words
For the Distributed-Systems Engineer Think of the model as a single, enormous state object—roughly 150 billion floating-point parameters—that has been trained offline over months on a cluster of thousands of GPUs.
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Claude Opus 51,381 words
The 3 Weakest Claims "94% accuracy decoding neural patterns into text… works with any language, any device" (Slide 3) Why it's weak: the claim implies parity with surgically implanted electrodes. The number to compare against is Willett et al.
Read the full answer
Ternary Bonsai 2 27B1,109 words
The 3 Weakest Claims in the MindMeld AI Pitch "FDA Clearance (40% of $15M)" — Slide 7 The claim: They're allocating $6M (40% of the entire raise) toward "FDA clearance" for a consumer EEG headband that decodes thoughts into text for everyday smartphone use.
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…

Claude Opus 5695 words
A 1-Month Starter Plan for Health & Longevity Core principle: The goal this month isn't transformation — it's building three habits you can still be doing in year five. Consistency beats intensity every time.
Read the full answer
Ternary Bonsai 2 27B729 words
1-Month Foundation Plan: Health & Longevity How to Use This Plan Pick one area per week's focus while maintaining the other two at a baseline level. The point is consistency over intensity. You're building a habit identity, not a transformation.
Read the full answer
Our Verdict
Claude Opus 5
Claude Opus 5
Ternary Bonsai 2 27B
Ternary Bonsai 2 27BRunner-up

Not enough votes to call it. On the specs, Claude Opus 5 has the edge: bigger model tier, bigger context window, major provider backing.

Ternary Bonsai 2 27B costs 50x less per token.

Too close to call
API pricing

Cost per 1M tokens

Claude Opus 5
Input
$5.00
Output
$25.00
Ternary Bonsai 2 27B
Input
$0.07
67× cheaper
Output
$0.50
50× cheaper

Ternary Bonsai 2 27B is cheaper on both: 67× input, 50× output.

Where to run it

5 hosts

Claude Opus 54 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·99.8% 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
Ternary Bonsai 2 27B1 host
HostInOutContextUptime
DDarkbloomint4$0.07 in·$0.50 out·262k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Claude Opus 5 is developed by Anthropic while Ternary Bonsai 2 27B is developed by PrismML. Claude Opus 5 has a 1.0M token context window vs Ternary Bonsai 2 27B's 262K. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 5 and Ternary Bonsai 2 27B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

Claude Opus 5 costs $5/M input tokens and Ternary Bonsai 2 27B costs $0.075/M input tokens. Ternary Bonsai 2 27B is $4.92/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude Opus 5 and Ternary Bonsai 2 27B 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.

Keep exploring

More comparisons

Against the newest arrivals

Claude Opus 5 logoDeepSeek V4 Flash Vision Exp logo
Claude Opus 5 vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Ternary Bonsai 2 27B logoSolar Pro 4 logo
Ternary Bonsai 2 27B vs Solar Pro 4Landed Sep 2026
Claude Opus 5 logoHy3 logo
Claude Opus 5 vs Hy3Landed Sep 2026
Ternary Bonsai 2 27B logoQwen3.7 Flash logo
Ternary Bonsai 2 27B vs Qwen3.7 FlashLanded Sep 2026
Claude Opus 5 logoLing 3.0 Flash logo
Claude Opus 5 vs Ling 3.0 FlashLanded Sep 2026
Ternary Bonsai 2 27B logoMuse Glimmer 30B logo
Ternary Bonsai 2 27B vs Muse Glimmer 30BLanded Sep 2026
Claude Opus 5 logoGLM 5.3 logo
Claude Opus 5 vs GLM 5.3Landed Sep 2026
Ternary Bonsai 2 27B logoGLM 5.3 Flash logo
Ternary Bonsai 2 27B vs GLM 5.3 FlashLanded Sep 2026

Same lab, same size, long tail

Claude Opus 5 logoClaude Sonnet 5 logo
Claude Opus 5 vs Claude Sonnet 5Version compare
Claude Opus 5 logoClaude Opus 4.6 logo
Claude Opus 5 vs Claude Opus 4.6Version compare
Ternary Bonsai 2 27B logoMercury 2.5 Preview logo
Ternary Bonsai 2 27B vs Mercury 2.5 PreviewSame size
Ternary Bonsai 2 27B logoNemotron 3.5 Lightning logo
Ternary Bonsai 2 27B vs Nemotron 3.5 LightningSame size
Ternary Bonsai 2 27B logoLFM2.5-2.6B logo
Ternary Bonsai 2 27B vs LFM2.5-2.6BNew provider
Ternary Bonsai 2 27B logoLing 2.6 1T logo
Ternary Bonsai 2 27B vs Ling 2.6 1TNew provider
Ternary Bonsai 2 27B logoLing 2.6 Flash logo
Ternary Bonsai 2 27B vs Ling 2.6 FlashNew provider
Claude Opus 5 logoLing 3.0 Flash Fin (free) logo
Claude Opus 5 vs Ling 3.0 Flash Fin (free)New provider

Model pages

Claude Opus 5 logo
Claude Opus 558 outputs, specs and price
Ternary Bonsai 2 27B logo
Ternary Bonsai 2 27B9 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
  • 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