Matt Shumer: slow AI releases aren't a wall — safety clearance is the bottleneck, wave of frontier models imminent

mattshumer_ · x · 2026-09-03

Matt Shumer argues the recent lull in major model releases isn't a capability wall but safety clearance: frontier models now cross autonomy and cybersecurity thresholds requiring extensive external testing. He previews (partly unverified) Anthropic's Fable 5.1 handling multi-day autonomous work, OpenAI's Astra with major jumps in long-horizon projects, math and computer use, and Grok 4.7 following Grok 4.6's benchmark leap. The dam, he says, is about to break.

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