Quick Answer
Is Qwen3.8-Max Open Weights Out Yet? (Aug 5)
The Short Answer
No — Qwen3.8-Max open weights were not out yet as of August 5, 2026. Alibaba launched the model August 3 and said the weights would drop “the following week” (~week of Aug 10), alongside Qwen3.8-27B. The model is already usable via API/chat ahead of the weights.
Timeline
- Aug 3, 2026 — Qwen3.8-Max launched; made widely accessible via API/chat; open weights promised “next week.”
- ~Week of Aug 10, 2026 — expected open-weight release (Qwen3.8-Max + Qwen3.8-27B).
- API pricing — TBD at launch.
What It Is
Qwen3.8-Max is Alibaba’s 2.4-trillion-parameter MoE model, tuned for agentic computer use, with a 1M context. It’s the largest open-weight model Alibaba has disclosed.
Benchmark Claims (vendor-reported)
| Benchmark | Score |
|---|---|
| OSWorld-Verified | 86.1 |
| Terminal-Bench 2.1 | 86.6 |
| SWE-bench Pro | 67.7 |
| FrontierSWE | 73.5 |
| GPQA Diamond | 92.6 |
| PaperBench | 93.0 |
Alibaba claims leads over GPT-5.6 Sol Max (83.2) and Fable 5 (85.0) on OSWorld. Independent confirmation was not available as of Aug 5, 2026, and a full model card lagged the launch.
What To Do Now
- Want to test it → use the API/chat that went live Aug 3.
- Planning to self-host → wait for the actual weights + license (~Aug 10) and size your GPUs for a 2.4T MoE.
- Need proven open weights today → Kimi K3 (open weights Jul 27) or DeepSeek V4.
Sources
- SCMP — Qwen3.8-Max widely accessible ahead of open weights: scmp.com
- VentureBeat — Qwen3.8-Max agentic claims: venturebeat.com
- MarkTechPost — release details: marktechpost.com