What is the difference between Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B?

Claude 3.7 Thinking Sonnet is developed by Anthropic while Ternary Bonsai 2 27B is developed by PrismML. Claude 3.7 Thinking Sonnet has a 200K 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.

Which is better, Claude 3.7 Thinking Sonnet or Ternary Bonsai 2 27B?

It depends on your use case. Claude 3.7 Thinking Sonnet 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.

How much does Claude 3.7 Thinking Sonnet cost compared to Ternary Bonsai 2 27B?

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Ternary Bonsai 2 27B costs $0.075/M input tokens. Ternary Bonsai 2 27B is $5.92/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 3.7 Thinking Sonnet and Ternary Bonsai 2 27B on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet 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.

Updated Sep 2026

Claude 3.7 Thinking SonnetvsTernary Bonsai 2 27B

Ternary Bonsai 2 27B is cheaper than Claude 3.7 Thinking Sonnet at $0.075/M vs $6/M input tokens.

Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B compared across 9 shared prompts
Spec	Claude 3.7 Thinking Sonnet	Ternary Bonsai 2 27B
Input price	$6/M tokens	$0.075/M tokens
Output price	$30/M tokens	$0.5/M tokens
Context window	200K tokens	262K tokens
Free API (OpenRouter)	No	No
Released	Feb 2025	Sep 2026

Side by side

Same prompt, both answers

Opening lines from 2 of the 9 prompts both answered. Formatting stripped, words untouched.

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 3.7 Thinking Sonnet632 words

How Large Language Models Work: Three Tailored Explanations For an Experienced Software Engineer What makes LLMs fascinating from a systems perspective is that they're essentially massive distributed computing graphs that learn to compress and reconstitute information through backpropagation.

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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 3.7 Thinking Sonnet374 words

Analysis: The 3 Weakest Claims in MindMeld AI's Pitch Deck "MindMeld AI reads your brainwaves to predict what you want to type before you think it" Why it's weak: This claim makes a scientifically impossible promise.

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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.

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Our Verdict

Claude 3.7 Thinking Sonnet

Ternary Bonsai 2 27BRunner-up

Not enough votes to call it. On the specs, Claude 3.7 Thinking Sonnet has the edge: bigger model tier, major provider backing.

Ternary Bonsai 2 27B costs 60x less per token.

Too close to call

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet

Input

$6.00

Output

$30.00

Ternary Bonsai 2 27B

Input

$0.07

80× cheaper

Output

$0.50

60× cheaper

Ternary Bonsai 2 27B is cheaper on both: 80× input, 60× output.

Where to run it

1 host

Claude 3.7 Thinking Sonnet

No hosts listed on OpenRouter.

Ternary Bonsai 2 27B1 host

HostInOutContextUptime

Darkbloomint4$0.07 in$0.50 out262k100% up

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

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Same prompt, both answers

Explain Like I'm a Specific Expert

Startup Pitch Teardown

Cost per 1M tokens

1 host

What we learned reading every model

Common questions

What is the difference between Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B?

Which is better, Claude 3.7 Thinking Sonnet or Ternary Bonsai 2 27B?

How much does Claude 3.7 Thinking Sonnet cost compared to Ternary Bonsai 2 27B?

How can I compare Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Explain Like I'm a Specific Expert

Startup Pitch Teardown

Cost per 1M tokens

1 host

What we learned reading every model

Common questions

What is the difference between Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B?

Which is better, Claude 3.7 Thinking Sonnet or Ternary Bonsai 2 27B?

How much does Claude 3.7 Thinking Sonnet cost compared to Ternary Bonsai 2 27B?

How can I compare Claude 3.7 Thinking Sonnet and Ternary Bonsai 2 27B on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages