copilot
3 articles
Stripping Down Three Excel AI Agents: Claude Has 14 Tools, Copilot Has 2, Shortcut Can Actually SEE the Spreadsheet — Five Questions Every Agent Builder Must Answer
Nicolas Bustamante reverse-engineered three production Excel AI agents (Claude in Excel, Microsoft Copilot, Shortcut AI), comparing their tool schemas, overwrite protection, verification loops, and memory systems. The model doesn't matter — tool architecture is everything. He then ran the same DCF valuation prompt on all three, audited every formula, and found wildly different quality levels that map directly to architectural choices.
33,000 Agent PRs Tell a Brutal Story: Codex Dominates, Copilot Struggles, and Your Monorepo Might Not Survive
Drexel/Missouri S&T analyzed 33,596 agent-authored GitHub PRs from 5 coding agents. Overall merge rate: 71%. Codex: 83%, Claude Code: 59%, Copilot: 43%. Rejection cause: no review. LeadDev warns PR flood is crushing monorepos/CI.
GitHub Agent HQ: Claude, Codex, and Copilot Now Fight Side by Side in the Same PR — The Multi-Agent Era Is Here
GitHub's Agent HQ now offers multi-agent support (Claude, Codex, Copilot) for Copilot Pro+ & Enterprise users. Run multiple AIs simultaneously in GitHub/VS Code to tackle problems from different angles. Outputs become Draft PRs. A paradigm shift for code review.