Ternary Bonsai 2 27B

Name: PrismML: Ternary Bonsai 2 27B
Brand: prism-ml
SKU: prism-ml/ternary-bonsai-2-27b
Price: 0.0825 USD
Availability: InStock

prism-ml/ternary-bonsai-2-27b

Bonsai 2 27B is a 27B-parameter reasoning model from PrismML derived from Qwen3.8-27B.

$0.0825 in · $0.55 out per 1M tokens262k contextSep 18, 2026

about 0.03¢ a message

A typical message: about 500 tokens you send and 500 it writes.

Chat with Ternary Bonsai 2 27B

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Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens: $0.0825provider $0.075
Output, per 1M tokens: $0.55provider $0.50
Cached input, per 1M: $0.04125provider $0.0375
Margin: +10%

Context and formats

Context window: 262,144 tokens
Longest answer: 32,768 tokens
Reads: text and images
Makes: text
First listed: 2026-09-18

Measured here, last 7 days

First token, median: not measured
Answered without error: not measured

Tools and JSON

Tool calling: declaredthe provider's claim, not yet measured here
JSON output: declaredthe provider's claim, not yet measured here

Price and latency history as JSON: GET /api/planet/history?id=prism-ml/ternary-bonsai-2-27b.

About

Bonsai 2 27B is a 27B-parameter reasoning model from PrismML derived from Qwen3.8-27B. It supports coding, mathematics, tool calling, and image understanding with a 262K-token context window. Ternary compression shrinks...

In PrismML's words.

Try it here

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The answer appears here.

Measured here

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Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "prism-ml/ternary-bonsai-2-27b", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

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Ternary Bonsai 2 27B price on Antimatter

<a href="https://useantimatter.com/planet/prism-ml/ternary-bonsai-2-27b"><img src="https://useantimatter.com/api/badge/price?id=prism-ml%2Fternary-bonsai-2-27b" alt="Ternary Bonsai 2 27B price on Antimatter" height="28"></a>

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