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PrismML · Language model

Ternary Bonsai 2 9B

prism-ml/ternary-bonsai-2-9b
  • Language
Released Oct 16, 2026

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...

Specifications

Context window
262,144 tokens
Max output
65,536 tokens
Input
text, image
Output
text
Reasoning
supported
Tokenizer
Qwen

Supported parameters

Accepted by the model and forwarded as-is by the gateway.

  • frequency_penalty
  • logprobs
  • max_tokens
  • presence_penalty
  • reasoning
  • repetition_penalty
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_k
  • top_logprobs
  • top_p

Use it

POST /api/v1/chat/completions · MCP chat · full reference

curl https://omnirail.org/api/v1/chat/completions \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"prism-ml/ternary-bonsai-2-9b","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'