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  5. o3 MinivsTernary Bonsai 2 27B
Updated Sep 2026

o3 MinivsTernary Bonsai 2 27B

Ternary Bonsai 2 27B is cheaper than o3 Mini at $0.075/M vs $1.1/M input tokens.

o3 Mini and Ternary Bonsai 2 27B compared across 9 shared prompts
Speco3 MiniTernary Bonsai 2 27B
Input price$1.1/M tokens$0.075/M tokens
Output price$4.4/M tokens$0.5/M tokens
Context window64K tokens262K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedDec 2024Sep 2026
Our Verdict
Ternary Bonsai 2 27B
Ternary Bonsai 2 27B
o3 Mini
o3 MiniRunner-up

Not enough votes to call it. On the specs, Ternary Bonsai 2 27B has the edge: bigger model tier, newer, bigger context window.

Ternary Bonsai 2 27B costs 8.8x less per token.

Too close to call
API pricing

Cost per 1M tokens

o3 Mini
Input
$1.10
Output
$4.40
Ternary Bonsai 2 27B
Input
$0.07
15× cheaper
Output
$0.50
8.8× cheaper

Ternary Bonsai 2 27B is cheaper on both: 15× input, 8.8× output.

Where to run it

2 hosts

o3 Mini1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·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

o3 Mini is developed by OpenAI while Ternary Bonsai 2 27B is developed by PrismML. o3 Mini has a 64K 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. o3 Mini 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.

o3 Mini costs $1.1/M input tokens and Ternary Bonsai 2 27B costs $0.075/M input tokens. Ternary Bonsai 2 27B is $1.03/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 o3 Mini 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

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Same lab, same size, long tail

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Model pages

o3 Mini logo
o3 Mini59 outputs, specs and price
Ternary Bonsai 2 27B logo
Ternary Bonsai 2 27B9 outputs, specs and price
Rival
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Explore all of Rival

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