codex

In 48 hours the question of where long-running coding agents actually run got both answers at once: an indie $7M bet against lock-in, and a frontier-lab acquisition that pulls the runtime layer inside Codex.

The Codex CLI config that ends the permission nagging — config.toml profiles, sandbox and approval modes, AGENTS.md, reasoning effort, MCP servers, and the codex exec setup for CI.

Greg Brockman's AI Ascent 2026 thesis is that judgment, not compute, becomes the scarce resource as agents take over execution — and Codex Cloud, Cursor 3, Devin, and Anthropic auto mode are already pricing it in.