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Vibe Coding2026-04-30 · source-backed
The decision, covered by Simon Willison, frames the ban as strategic: maintainers invest time reviewing contributions to mentor developers into trusted long-term contributors. If an LLM wrote the code, that mentorship is wasted. The wrinkle: Bun (acquired by Anthropic) runs a Zig fork and can't upstream AI-assisted improvements. I respect the reasoning even though I disagree with the conclusion. The assumption that LLM-assisted code prevents developer growth seems testable. Nobody's tested it.
Each link below shares sources, entities, or timing with this story.
Simon Willison spent a while taking ChatGPT Work apart and published the map on August 30. Work splits into Work Cloud and Work Local, the latter being the renamed Codex desktop app, at $20/month and up since July 9. He enumerates six capabilities Work has that Chat doesn't, a...
This one hit my inbox and I had to read it twice. Anthropic announced a partnership with SpaceXAI for the entire Colossus 1 data center in Memphis. 220,000 NVIDIA GPUs. 300+ megawatts. That's the largest single compute acquisition by any AI lab. Full stop. But the part that ma...
Simon Willison doesn't hand out superlatives. So when he writes that Z.ai's GLM-5.2 is "probably the most powerful text-only open weights LLM," that's worth stopping for. His June 17 evaluation walks through a 753B-parameter Mixture-of-Experts model with 40B active params, a 1...
This is the part of the launch I can't stop thinking about. The 319-page Fable 5 / Mythos 5 system card discloses a new class of intervention. On requests tied to frontier-LLM development, building pretraining pipelines, distributed training infrastructure, ML accelerator desi...
Willison's prolific output continues: he covered ggml.ai joining HuggingFace, Taalas 17K tok/s, SWE-bench Feb 2026 leaderboard (Opus 4.5 leads at 80.9%, 4 Chinese models in top 10), Paul Ford's NYT essay, Martin Fowler's "LLMs eating specialty skills" observation, and Thariq S...
Anthropic shipped cross-session messaging for Claude Code on August 7, macOS and Linux, version 2.1.224 or higher. Two new tools: ListAgents discovers other active sessions on your machine, SendMessage delivers text to one by name. Messages between sessions on the same machine...
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