Open weight models
Small open-source language models gaining market share on commercial platforms. Every AI Coding Weekly story on open weight models, newest first. 3 stories since September 2026.
- Meta ships Muse Spark Open, 816B params, built for agentic coding
Alexandr Wang calls it the most capable US open-weight model to date, and nobody we follow has pointed it at real code yet.
- Theo says local AI is a hobby, not liberation
A $18,000 four-GPU box for a 10-person startup set off an argument about what frontier subscriptions will cost in two years.
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- Open models hit 78.4% of tokens on Vercel AI Gateway
Spend still skews closed, but the cheap models are now doing most of the work.
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