Simon Willison
June 2026 newsletter
What happened
Simon Willison's June 2026 newsletter teaser highlights key industry developments, including Claude Fable 5, GPT-5.6, US export restrictions, the GLM-5.2 open weights model, and the decline of 'tokenmaxxing.'
Why it matters
Tracks macro shifts in model releases and developer sentiment (e.g., moving away from brute-force token generation).
The take
While the newsletter itself is likely highly valuable, this post is just an index. The mention of GLM-5.2 as a top open-weights model and the shift away from 'tokenmaxxing' are the key signals to track.
Do this
Look up GLM-5.2 performance benchmarks and investigate the 'tokenmaxxing is over' trend regarding context efficiency.
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