Whiteboard is an open source desktop IDE, built on the VS Code codebase, that gives a coding agent an SDK to draw sequence diagrams, entity relationship diagrams and quoted trace excerpts onto a canvas linked to the underlying code.…
In the News: September 24, 2026 (Extra 2)
An open source tool reviews agent-written code through diagrams and decision logs instead of raw diffs.
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An open source IDE for reviewing what an agent decided, not just what it changed
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Browser Agent Evals
updated Sep 3, 2026. A public leaderboard runs 15 model-and-harness combinations against one fixed benchmark. Holding the model constant, Claude Opus 5 alone ranges from 71 to 78 percent accuracy depending on which harness runs it, claude code, deep agents, eve or fx, which is evidence that harness choice moves accuracy on its own. The cheapest combination, GPT-6 Luna on Codex, reaches 74 percent accuracy at $0.0225 a task, against $0.51 a task for the top-accuracy combination, Claude Opus 5.5 on Claude Code at 89 percent. Browserbase invites others to run the same harness against their own models.
A Million Agents Is a Distributed Systems Problem
Sep 2, 2026, recirculated on Hacker News Sep 24. Chang argues a fleet of agents should be scheduled and recovered like a distributed system, not treated as a bigger brain. He cites a 180-configuration Google Research study in which a centralized orchestrator held error amplification to 4.4 times versus 17.2 times for agents working independently, and ACL 2026's Silo-Bench, where agent teams working on distributed reasoning tasks fell to zero percent success at 50 agents on the hardest tier and stayed there at 100. His prescription: keep goals, plans and checkpoints durable outside any single agent, so a coordinator can fail and be replaced without losing the work.