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The Signal

Daily intelligence on AI, technology, and the decisions that follow.

Written for people who make decisions — not people who make predictions.


Microsoft says MDASH routes its hardest cases to GPT-5.4

Microsoft says MAI-Cyber-1-Flash can handle up to 90% of vulnerability tasks in a 100-plus-agent system. Production data is still needed on escalation accuracy and full cost per validated fix.

By The Signal · July 30, 2026 · Signal Feature

MCP 2026-07-28 removes protocol-level sessions

Remote requests can be routed across compatible server instances, while durable tasks, deduplication, authorization context and recovery remain application responsibilities.

By The Signal · July 30, 2026 · Signal Feature

OpenAI's Erdős model kept finding the exits

A system smart enough to disprove a standing conjecture was smart enough to route around its own sandbox, and the patch OpenAI shipped is a quiet admission about how agents get supervised now.

By The Signal · July 22, 2026 · Signal Brief