ternary-bonsai-2-27b
Bonsai 2 27B is a 27B reasoning model from PrismML derived from Qwen3.8-27B, supporting coding, mathematics, tool calling and image understanding; ternary compression shrinks the model for efficient serving.
Pricing: Input 18 credits / 1M tokens (≈ $0.09), Output 120 credits / 1M tokens (≈ $0.60).
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Ternary Bonsai 2 27B API on ModelFold
Bonsai 2 27B is a 27B reasoning model from PrismML derived from Qwen3.8-27B, supporting coding, mathematics, tool calling and image understanding; ternary compression shrinks the model for efficient serving. Try Ternary Bonsai 2 27B in the ModelFold Playground, then call it from your own code through an OpenAI-compatible chat completions API.
What Is the Ternary Bonsai 2 27B API
Ternary Bonsai 2 27B at a glance
Ternary Bonsai 2 27B is a chat model from PrismML. It accepts text and images as input and returns text, with a context window of up to 262K tokens.
Use it without hosting anything
On ModelFold you call Ternary Bonsai 2 27B with a single API key — no model weights to download and no inference servers to run. The same key also works for the other chat, image, video and audio models on ModelFold.
Core Capabilities of Ternary Bonsai 2 27B
Up to 262K tokens of context
Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.
Understands images
Besides text, Ternary Bonsai 2 27B accepts images as input, so a single request can combine instructions with visual or other media.
Function calling
Ternary Bonsai 2 27B supports tool (function) calling: describe your functions in the request and the model returns structured calls your code can run — the basis for agents and integrations.
Adjustable reasoning effort
Choose a reasoning effort level (low, medium or high) per request to balance depth of thinking against speed and token usage.
Structured outputs
Ask for JSON that follows a schema (response_format), which makes extraction, classification and system integrations more reliable.
How to Use Ternary Bonsai 2 27B on ModelFold
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Step 1: Try it in the Playground
Open the Playground at the top of this page, type a prompt and see how Ternary Bonsai 2 27B responds before writing any code.
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Step 2: Create an API key
Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.
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Step 3: Send a request
Call POST https://modelfold.ai/v1/chat/completions with "model": "ternary-bonsai-2-27b" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.
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Step 4: Ship and monitor
Integrate the response into your product and check token usage and spend for every call in the console logs.
What You Can Build with Ternary Bonsai 2 27B
High-volume pipelines
Run classification, extraction, rewriting and batch jobs at scale where cost per request matters.
AI coding assistants
Generate, explain, debug and refactor code, review pull requests and work through multi-file changes in developer tools and IDE plugins.
Analysis and complex reasoning
Work through research questions, data interpretation, planning and other problems that need careful step-by-step reasoning.
Screenshot and image understanding
Read screenshots, charts, diagrams and photos alongside text — for UI review, visual QA or turning images into structured data.
Frequently Asked Questions
What is Ternary Bonsai 2 27B?⌄
Bonsai 2 27B is a 27B reasoning model from PrismML derived from Qwen3.8-27B, supporting coding, mathematics, tool calling and image understanding; ternary compression shrinks the model for efficient serving.
Which inputs does Ternary Bonsai 2 27B support?⌄
Ternary Bonsai 2 27B accepts text and images and returns text. Through ModelFold you can send text and images (OpenAI-style image_url content); in the Playground you can also attach documents, which are converted to text.
How long is the context window of Ternary Bonsai 2 27B?⌄
Up to 262K tokens, shared between your input and the model’s output.
Does Ternary Bonsai 2 27B support function calling?⌄
Yes. Ternary Bonsai 2 27B supports tools / function calling through the standard tools parameter of the chat completions API.
How is Ternary Bonsai 2 27B billed on ModelFold?⌄
Pay as you go by tokens: input and output tokens are charged at the per-million-token prices shown on this page. There is no monthly fee, and failed requests are not charged.
How do I call Ternary Bonsai 2 27B through the API?⌄
Send a POST request to https://modelfold.ai/v1/chat/completions with "model": "ternary-bonsai-2-27b", using your ModelFold API key as the Bearer token.
| Input | 18 credits 1M tokens≈ $0.09 |
| Output | 120 credits 1M tokens≈ $0.60 |
Billed per token: input and output are priced separately, and thinking tokens count as output. The Playground charges exactly the same way.
Read API docs →AI Agents · Claude Code / Cursor / Trae →curl https://modelfold.ai/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"ternary-bonsai-2-27b","messages":[{"role":"user","content":"Hello"}]}'