Alibaba to Release Open Weights for 2.4-Trillion-Parameter Qwen3.8-Max

Alibaba unveiled Qwen3.8-Max on August 3, 2026 — a 2.4-trillion-parameter model and its largest yet. The company plans to release the model's open weights within a week, a rare move at frontier scale, where Anthropic and OpenAI offer only hosted APIs. Qwen3.8-Max trails just Fable 5 and three Opus-family models on the Arena.AI leaderboard.