Greg IsenbergFeb 6, 202649m54.2K views

Claude Opus 4.6 vs GPT-5.3 Codex

Name: Claude Opus 4.6 vs GPT-5.3 Codex
Uploaded: 2026-02-06
Duration: 48 min 55 s
Description: With Morgan Linton (Bold Metrics), setup-and-compare of Claude Opus 4.6 and GPT-5.3 Codex on the day of their joint release: Agent Teams flag, philosophical split between autonomous agents and interactive pair-programming, then a live race where each model builds a Polymarket competitor. Codex finished under 4 minutes; Opus took longer but shipped 96 tests and a more polished UI.

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Synopsis

With Morgan Linton (Bold Metrics), setup-and-compare of Claude Opus 4.6 and GPT-5.3 Codex on the day of their joint release: Agent Teams flag, philosophical split between autonomous agents and interactive pair-programming, then a live race where each model builds a Polymarket competitor. Codex finished under 4 minutes; Opus took longer but shipped 96 tests and a more polished UI.

Ideas in this episode

App cloning / clone-and-launch service
Greg and Morgan Linton's Agent-Teams comparison shows a practical benchmark between autonomous agent teams and interactive pair-programming tools by having each build a Polymarket competitor.