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PetInst-LLM 270M Intent v1.1 — Q8_0 GGUF

PetInst-LLM 270M is an independently modified, fine-tuned derivative of Google's google/functiongemma-270m-it. It selects exactly one high-level virtual-pet intent from three to five declared tools and emits no conversational response.

This project is not affiliated with, sponsored by, or endorsed by Google. Google DeepMind created the upstream FunctionGemma model; the PetInst-LLM project created and evaluated these modifications.

Artifact

  • File: petinst-llm-270m-intent-v1.1-q8_0.gguf
  • Quantization: Q8_0
  • Size: 291,557,728 bytes (278.05 MiB)
  • SHA-256: 31d465822c2780c08b4d66e344aec1133f751d89923405b61c1ecd34cb2fa437
  • Runtime: llama.cpp-compatible GGUF; intended Expo integration uses llama.rn
  • Output limit used in evaluation: 24 tokens
  • Required stop sequence: <end_function_call>

Output contract

The runtime supplies exactly three to five native FunctionGemma tool declarations. The model must return exactly one empty-argument call:

<start_function_call>call:pet_play{}<end_function_call>

Trusted application code validates the selected intent and constructs any complete parameterized host action. The model must not directly execute native calls or mutate authoritative pet state.

Evaluation

On the answer-free 220-row Control E set:

Metric Result
Intent accuracy 83.64%
Strict function-call validity 98.64%
Safety accuracy 100%
Mean / P95 / max latency 0.097 / 0.118 / 0.133 s
Mean generation rate 221.96 tokens/s

Latency was measured sequentially on an Apple M4 using llama.cpp-server with Metal and a 4,096-token runtime context. It is not physical-phone, llama.rn, thermal, or airplane-mode proof.

Limitations

  • This is a narrow virtual-pet intent selector, not a general chatbot.
  • Intent accuracy is below a production-quality gate; the host must use deterministic validation and fallback.
  • Negative-expression accuracy was 75%, memory-policy accuracy was 55%, and maximum position gap was 14.51 percentage points on Control E.
  • The current Expo application still needs a versioned PetInst intent adapter before this model can replace its existing JSON model runtime.
  • Only English synthetic research data was evaluated.

Terms and modification notice

Access and use are subject to the Gemma Terms of Use and the incorporated Gemma Prohibited Use Policy. See NOTICE and MODIFICATIONS.md.

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