Ternary Bonsai 2 27B
- Family
- Bonsai
- Released
- 2026-09-17
- Context
- 256K
- Parameters
- 27.4B
- Specialization
- on-device
- Openness
- Open source
- License
- Apache 2.0OSI-approvedPermitted
- Weights
- Available
- Code
- Unknown
- Training
- Fine-tuned
No tracked provider pricing is available yet.
About
Ternary Bonsai 2 27B (also branded Bonsai 2 27B) is PrismML's flagship ternary open-weight multimodal model, announced 2026-09-17. Based on Qwen3.8 27B. PrismML reports ~9× smaller on-disk size than the full-precision counterpart and 98.2% of aggregate benchmark performance (overall 83.9 vs Qwen3.8 27B 85.4 on their thinking-mode suite). Language footprint ~5.9 GB (GGUF PTQ1_0 ~5.93–5.95 GB; PQ2_0 ~7.2 GB; MLX companion larger). Gains called out vs prior Bonsai 27B: agentic coding, multimodal reasoning, long-horizon tool use. Specs (docs/HF card): 27.36B params; 262K context; text+image in / text out; optional vision mmproj; Apache 2.0; available on Hugging Face (prism-ml/Ternary-Bonsai-2-27B-gguf + mlx-2bit).
Providers(1)
Compare API pricing across 1 tracked provider route for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| OpenRouter | - | - | ServerlessPartial |
Capabilities
Benchmark peer barsfor Coding
Benchmark scores(10)
| Benchmark | Score | Version | Evaluation | Source |
|---|---|---|---|---|
| 96.7 | GSM8K (thinking mode)Observed 2026-10-13 | — | ||
| 98.8 | MATH-500 (thinking mode)Observed 2026-10-13 | — | ||
| 95.0 | AIME25 (thinking mode)Observed 2026-10-13 | — | ||
| 95.8 | AIME26 (thinking mode)Observed 2026-10-13 | — | ||
| 95.1 | HumanEval+ (thinking mode)Observed 2026-10-13 | — | ||
| 83.1 | MBPP+ (thinking mode)Observed 2026-10-13 | — | ||
| 90.1 | LiveCodeBench (thinking mode)Observed 2026-10-13 | — | ||
| 91.3 | IFEval (thinking mode)Observed 2026-10-13 | — | ||
| 74.9 | BFCL v3 (thinking mode)Observed 2026-10-13 | — | ||
| 75.5 | MMMU-Pro (thinking mode)Observed 2026-10-13 | — |
Migration checks
No linked migration route is available for this model yet.
API versions
ternary-bonsai-2-27bbonsai-2-27bNo tracked provider pricing is available yet.