Model reference · open weights
A3-Qwen3.5 is an open-weight language model from McGill-NLP, listed in the AxForge catalogue. AxForge can bring it up on EU-owned hardware for you on request — with the licence handled where one is required.
About
A3-Qwen3.5-9B Structured Distillation of Web Agent Capabilities Enables Generalization Xing Han Lù, Siva Reddy A3-Qwen3.5-9B is a 9B multimodal web agent fine-tuned from Qwen/Qwen3.5-9B on A3-Synth, a synthetic dataset generated using the Agent-as-Annotators (A3) framework. The model achieves 41.5% on WebArena, surpassing closed-source models such as Claude 3.5 Sonnet (36.0%) and GPT-4o (31.5%) under the same evaluation protocol. Usage Serve with vLLM: Training - Base model: Qwen/Qwen3.5-9B - Data: A3-Synth (16k examples from Gemini 3 Pro trajectories) - Method: SFT with FSDP - Max sequence length: 16,384 - Learning rate: 1e-5 - Epochs: 2 - Batch size: 1 per GPU, gradient accumulation 4 Model Variants Citation
Summarised from the published model card. Read the full card on the HuggingFace links below.
Specifications
| Maker | McGill-NLP |
|---|---|
| Type | Language models |
| Parameters (lead) | 9.4B |
| Variants | 3 |
| Runs with | transformers |
| Based on | Qwen/Qwen3.5-9B |
| Released | 2026-04-06 |
| Popularity | 1k downloads / month |
| Likes | 8 |
| Licence | Commercial licence needed |
How it works
Variants
Open weights ship in several sizes and precisions. One page, all the variants — pick the one that fits your GPU. VRAM figures are estimates from model size.
Using it via the API
Once AxForge deploys a3-qwen3-5 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (a3-qwen3-5 below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/chat/completions \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"a3-qwen3-5","messages":[{"role":"user","content":"Hello"}]}'
Licence
The weights are open but its licence needs a commercial agreement for business use. AxForge can arrange that licence and host the model for you — you pay AxForge, we settle with the model’s maker. Ask us for a quote. Read the licence ↗