Ternary Bonsai 2 27B

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

Model by PrismML

IndexedLicense unknown

Install

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{
  "model": "prism-ml/ternary-bonsai-2-27b",
  "baseURL": "https://openrouter.ai/api/v1"
}

OpenAI-compatible API: point any OpenAI SDK at the base URL and use this model id.

Settings it needs

OPENROUTER_API_KEYrequiredsecret

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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...

Use cases: code-generation, model-inference

Reviews

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Price and limits

Variant	Input $/M tokens	Output $/M tokens	Cached input $/M
Standard	$0.075	$0.5	$0.0375

Price as of Oct 26, 2026 from OpenRouter. Prices change often; check before you rely on one.

Provider: PrismML
Model id: prism-ml/ternary-bonsai-2-27b
Context window: 262,144 tokens (262K)
Max output: 32,768 tokens
Input: text, image
Output: text
Tool calling: Yes
Structured outputs: Yes
Reasoning: Yes
Weights: Open: prism-ml/Ternary-Bonsai-2-27B-gguf
Released: Sep 18, 2026

Details

Auth: API key
License: License unknown
Docs: openrouter.ai/prism-ml/ternary-bonsai-2-27b/api
First seen: Oct 24, 2026
Last checked: Oct 26, 2026
Source: OpenRouter

Cite this page

Ternary Bonsai 2 27B: price, context window, tool use. Agent Mart. https://agentmart.dev/models/prism-ml-ternary-bonsai-2-27b (last updated 2026-10-26)