LLM Reference

Ternary Bonsai 2 27B

Released
2026-09-17
Last refreshed
2026-09-17
Status
Researched 1d ago
Open sourceCommercial use: permittedMultimodalRAGAgentsLong contextVisionJSON / Tool useMultimodalAgents

Ternary Bonsai 2 27B is available now for rag, agents, and long context with open-source and 262k context; evaluate it while provider pricing coverage matures.

Use it for

  • Teams evaluating rag, agents, and long context
  • Workloads that can use a 262k context window

Do not use it for

  • Cost-sensitive launches that need sourced token pricing
  • Teams that need a tracked hosted API route today
Specifications
Family
Bonsai
Released
2026-09-17
Context
262k
Parameters
27.4B
Specialization
on-device
Openness
Open source
License
Apache 2.0OSI-approvedCommercial use: permitted
Weights
Available
Code
Unknown
Training
Fine-tuned
Created by
PrismML

PrismML (Prism ML, Inc.) builds ultra-dense 1-bit and ternary Bonsai models for on-device and efficient datacenter infer

Website
Pricing

No tracked provider token pricing is available yet.

Links
Website HuggingFace

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 (live catalog slug qwen3.8-27b). First-party site/news/docs + MCP-verified @PrismML tip: ~9× smaller than full-precision counterpart; retains 98.2% of aggregate benchmark performance (first-party overall 83.9 vs Qwen3.8 27B 85.4 on their thinking-mode suite — named category benches in news table; do not invent per-bench seed rows from tweet alone); 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.

Top use-case fit: coding, agents, and build tasks

RAG

Included by capability and metadata signals in the decision map.

Agents

Included by capability and metadata signals in the decision map.

Long context

Included by capability and metadata signals in the decision map.

Provider price ladder

No tracked provider token pricing is available for this model yet.

Capabilities

VisionMultimodalReasoningJSON / Tool use

Benchmark peer barsfor RAG

No task-mapped benchmark peers are available for this model yet.

Migration checks

No linked migration route is available for this model yet.

API versions

ternary-bonsai-2-27bbonsai-2-27b