Shared entity / Stack layer
Pro accounts start showing a Fable 5 usage quota
r/ClaudeAI (700 upvotes)
Shared entity / Stack layer
Opus 5.5's safeguards are flagging hotel-point, currency and noodle questions
r/ClaudeAI
Shared entity / Stack layer
Developers say GPT-6 Sol is a Terra-class model, not a 5.6 Sol replacement, and some are going back to 5.6
r/OpenAI (369 upvotes)
Shared entity / Policy dependency
White House asks OpenAI and Anthropic to keep new frontier models from the UK AI Security Institute until a US review finishes
Politico via Yahoo News (corroborated by Benzinga and Global Banking & Finance)
Shared entity / Stack layer
Anthropic made claude.ai 3.1x faster in two weeks by first giving Claude deterministic benchmarks to optimize against
claude.dev blog: How we made claude.ai 3x faster in two weeks (corroborated by HN 224 pts, runtimewire, daily.dev)
Shared entity / Stack layer
Anthropic let an internal Claude model run a perf sprint on claude.ai: 3,000+ merged changes, 3.1x faster on average
Claude Blog (claude.dev)
Shared entity / Policy dependency
Tip: Zed 1.21 keeps the machine awake while agent threads run, on by default through agent.prevent_idle_sleep
GitHub
Shared entity / Stack layer
Zvi on the Opus 5.5 system card: 'This is a Tier 2 cyber model' and METR's 30% chance of 2x AI R&D speedup should trigger the threshold
Don't Worry About the Vase (Zvi Mowshowitz)