Everyone Needs to Use OpenAI Codex... Until Claude Mythos Comes Out

OpenAI's Codex has rapidly overtaken Anthropic's Claude Code as the leading AI coding tool, driven by a flurry of recent features and superior performance in key areas. Hosts discuss install stats, head-to-head comparisons, live demos, and emerging integrations, noting Codex's edge in practical tasks while acknowledging Claude's strengths in UI and mobile access. They predict short-term dominance for Codex but anticipate competition from unreleased models like Claude Mythos.

Performance Stats and Vibe Shift

Codex, powered by GPT-5.5 released end of April, saw over 46 million installs last week versus under 500,000 for Claude Code—a reversal from months ago when Claude dominated developer and enterprise use. OpenAI focused intensely on coding capabilities, yielding faster computer control (quicker than average human speed, 24/7 capable), superior long-horizon autonomy via native Ralph loop implementation (iterates on goals for up to 36 hours), and better browser use with intentional actions. Claude pioneered computer use but remains slower and needs more hand-holding. Codex also integrates GPT Images 2.0, topping benchmarks over Google's Imagen 3 and others; Anthropic lacks image generation.