Qwen3.8 Open-Weight Launch Announcement Reaction

Melvin Vivas · X post · 2026-07-19 · Open on X

Topics: Industry Trends & Job Market · Level: beginner

Summary

Melvin Vivas reacts to the announcement that Qwen3.8 is coming soon. The quoted post says it has 2.4T parameters, will be released with open weights, and ranks second only to Fable 5. These are the vendor's own claims, not verified results.

Key points

• Qwen3.8: about 2.4T parameters, open weights to follow.
• Qwen says it is comparable to frontier models and second only to Fable 5.
• Qwen says the model is continuously evolving.

Resources mentioned

• Qwen3.8 · tool · qwen.ai · free
  Upcoming large Qwen model (2.4T parameters) that Qwen says will be released with open weights.
  Also in: SGLang v0.5.19 release: new models and beam search (Melvin Vivas on X · notes), Qwen3.8-Max on the Frontend Code Arena cost-performance frontier (Melvin Vivas on X · notes), Qwen3.8-Max announced with open weights for Max and 27B (Melvin Vivas on X · notes), Qwen3.8 (2.4T params) Announced as Upcoming Open-Weight Model (Melvin Vivas on X · notes)
• Fable 5 · tool · anthropic.com · paid
  A frontier model used as the comparison point in the Claude Opus 5 announcement; the post gives no other details about it.
  Also in: Claude Opus 5.5 in Devin: #1 on FrontierCode 1.1 (Melvin Vivas on X · notes), Creator's Top 3 Closed Models: Fable 5, GPT 5.6 Sol, Grok 4.6 (Melvin Vivas on X · notes), Opus 5 vs Fable 5: Cost per Task in Cursor Benchmarks (Melvin Vivas on X · notes), Opus 5 Beats Fable 5 on Cost per Task and Tokens (Melvin Vivas on X · notes) and 7 more