DevelopersTV

We need to talk about "ultra" mode in Codex

Theo - T3 — Jul 14, 2026 — talk

Why watch

This video critiques OpenAI's Codex Ultra mode, explaining how it misleads users by marketed as a reasoning level but actually spawning max-reasoning sub-agents that can exhaust a 5-hour limit in just 20 minutes. Targeted at developers using AI coding assistants who need to understand the cost and behavior implications of Ultra mode.