Author's Description
Ternary Bonsai 2 9B is PrismML’s compact, open-weight language model for conversational AI, reasoning, and tool use. Built on Qwen3.5, it uses ternary weights packed into 2 bits for efficient...
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
PrismML's Ternary Bonsai 2 9B demonstrates notable analytical capability paired with flawless operational consistency. Evaluated on multi-step reasoning benchmarks covering logic puzzles, pattern recognition, and mathematical deduction, the model achieved an impressive 94.0% accuracy, placing it in the 69th percentile. This strong baseline reasoning is further bolstered by an extensive 262,144-token context window, making it well-suited for long-context comprehension and tool-use workflows. In terms of cost, the model offers competitive pricing, ranking in the 58th percentile for overall cost efficiency. Another standout feature is its technical dependability; Ternary Bonsai 2 9B demonstrated exceptional reliability with a perfect 100% success rate and zero technical failures during testing. The model's most notable weakness is its execution speed. It tends to have longer response times, ranking in the 10th percentile among evaluated models. Consequently, while Ternary Bonsai 2 9B may not be suited for latency-critical, real-time interactions, its high reasoning precision, rock-solid dependability, and cost-effective profile make it a compelling choice for asynchronous problem-solving, deep analysis, and background automation tasks.
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $0.08 |
| Completion | $0.13 |
| Input Cache Read | $0.04 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
Darkbloom
|
Darkbloom | prism-ml/ternary-bonsai-2-9b-20261015 | 262K | $0.08 / 1M tokens | $0.13 / 1M tokens |
Benchmark Results
| Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
|---|
Other Models by prism-ml
|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| PrismML: Ternary Bonsai 2 27B | Sep 18, 2026 | 27B | 262K |
Image input
Text input
Text output
|
★ | ★★ | $$$$ |