VoicesMasad: Replit Agent 4 — Vibe Code a Startup from ScratchReplit Blog·high signalAgent 4 with Canvas, parallel agents, 10x speed. Replit at B, M rev run rate. Vision: agent as business cockpit, not just code writer.SourceSource pageReplit Blog↳ Follow the threadShared entity / Stack layerAmjad Masad Details Replit's Nightly Self-Improving Agent That Reads Every Trace and Ships Its Own A/B TestsSaaStrStack layer / Threat patternArmadin details full sandbox escape in Anthropic's Claude Cowork; Anthropic disputes, silently patchesSiliconANGLEPolicy dependency / Stack layerAnthropic Restores Global Access to Fable 5 and Mythos 5, Launches Claude for Government BetaAnthropicStack layer / Update threadPerplexity Is Building 'Teammate,' a Long-Horizon Coding Agent to Rival Cursor and OpenAIBusiness InsiderPolicy dependency / Stack layerIAPS warns on Kimi Claw: security and governance risks of Chinese-hosted 'always-on' AI agentsIAPSStack layer / Update threadHugging Face Ships a Native-Speed vLLM Transformers Modeling BackendHugging FaceStack layer / Update threadCursor Ships Cloud Subagents (/in-cloud) and an Auto-Review Safety ClassifierReleasebotStack layer / Update threadThorsten Ball's Amp Adds Configurable Remote 'Orbs' and Ships Opus 4.8-Powered 'Smart' ModeRegister Spill (Thorsten Ball)