kenkaneki/Qwen3-8B-ToolACE

Qwen3-8B ToolACE (Post-GRPO)

Qwen3-8B fine-tuned for precise function calling via SFT + GRPO on the ToolACE dataset.

Training Pipeline

1. SFT (1 epoch): LoRA r=64, assistant-only loss masking, cosine LR schedule
2. GRPO (400 steps): DAPO loss, decomposed rewards (format 0.1, tool name 0.5, tool args 0.4)

Serving

# BF16
vllm serve kenkaneki/Qwen3-8B-ToolACE --enable-auto-tool-choice --tool-call-parser hermes

# FP8 dynamic (recommended)
vllm serve kenkaneki/Qwen3-8B-ToolACE --quantization fp8 --enable-auto-tool-choice --tool-call-parser hermes

# With EAGLE-3 speculative decoding (1.8x speedup)
vllm serve kenkaneki/Qwen3-8B-ToolACE --speculative-config '{"model":"kenkaneki/Qwen3-8B-ToolACE-speculator.eagle3","num_speculative_tokens":3,"method":"eagle3"}' --enable-auto-tool-choice --tool-call-parser hermes

Latency (H100, vLLM, ToolACE prompts)

Config	c=1 E2EL p50	c=1 tok/s	c=32 tok/s
BF16	323.9 ms	150.4	2293
FP8 dynamic	222.9 ms	217.7	3268
EAGLE3 FT	175.4 ms	271.3	4378

Related Models

• kenkaneki/Qwen3-8B-ToolACE-W4A16 — W4A16 quantized
• kenkaneki/Qwen3-8B-ToolACE-speculator.eagle3 — EAGLE-3 draft head

Training

Hardware: NVIDIA H100 80GB. Training time: ~47 min (27 min SFT + 20 min GRPO).

Code: github.com/aimedvedevq/toolaceqwen