Ternary Bonsai2 9B is Prism ML’s open-weight model derived from Qwen3.5-9B with ternary language weights. It accepts text and generates text, supports reasoning and tool calling, and offers a shared 262,144-token context window with up to 65,536 output tokens. Thinking is enabled by default and can be turned off.
Ternary Bonsai2 9B by prism-ml is currently listed from a single provider. No official API price is listed for it; the prices below come from third-party channels.
The context window is 262,144 tokens, with an output limit of 65,536 tokens. It supports reasoning and tool use. The weights are open, so it can also be self-hosted or served through a gateway of your choice.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT | Gateway | $0.08 | $0.13 | $0.04 | — | 262,144 | 65,536 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
1 / 1 providers expose no reasoning control (reasoning_options: []).
Price history accumulates from each data sync; currently only 1 sample(s) (2026-10-23). Each future sync adds a point, and once accumulated a line is drawn here.