---
license: mit
library_name: onnxruntime
tags:
  - tool-calling
  - pathway-routing
  - onnx
---

# Sonus Needle Pathway Shadow

Fine-tuned Cactus Compute Needle checkpoint for Sonus request-scoped pathway
tools. The model emits bounded `route_NN`, `slot_NN`, confirmation, or `stay`
calls; the Sonus runtime validates every call against the active graph.

This checkpoint is **shadow-only**. It must not control caller state without an
independent acceptance gate and authoritative fallback.

## Evaluation

- Independent stress/Noura full-schema gate: 41/77 (53.2%).
- Guard-first, MiniLM top-two request shape: 50/77 local result accuracy.
- High-confidence route acceptance (`margin >= 0.15`): 27/48 accepted,
  27/27 correct on the disjoint gate.
- Local ONNX latency: approximately 254 ms median, 339 ms p95 on the evaluation
  host.

The full-schema score is not sufficient for authority. The staging deployment
keeps Ministral authoritative and records only value-free Needle comparisons.

## Files

- `encoder.onnx`
- `decoder_step.onnx`
- `needle.model`

Training data was generated from Sonus-owned synthetic/test pathways and
contains no call recordings or customer transcripts.