Claude Opus 5.5 vs Ternary Bonsai 2 27B

Price, context window & benchmark comparison

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Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
VS
P

Ternary Bonsai 2 27B

Prism Ml
$0.075 / $0.50
Input / Output · per 1M tokens
Compare different models
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Verdict: Ternary Bonsai 2 27B is 44.1× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 has the larger context window (1M vs 262K).
Claude Opus 5.5Ternary Bonsai 2 27B
Input price / 1M$4.00$0.075
Output price / 1M$20.00$0.50
Blended price (3:1)$8.00$0.18
Cached input / 1M$0.20
Context window1M262K
Max output128K33K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-09-222026-09-18
Retirement

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FAQ

Which is cheaper, Claude Opus 5.5 or Ternary Bonsai 2 27B?

Ternary Bonsai 2 27B is 44.1× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs Ternary Bonsai 2 27B: which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. Ternary Bonsai 2 27B: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, Ternary Bonsai 2 27B ≈ $400.00.

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