Persistent AI Coworkers Are OpenAI's Third Era

Why vibes shifted toward Codex

Seshan credited no strategy change for Codex momentum, only the same loop: dogfood, or mainline, the app all day and listen.

The team that built the desktop experience fixed their own pain and shipped, and external perception caught up later.

Incumbents with distribution like ChatGPT can push agents to a billion users in one move, while developer led tools must win on depth and trust with engineers.

The 2 to 3 month horizon also reorders roadmap bets, favoring teams that can ship, measure, and rewrite quickly over those that bet on a 12 month plan.

Even with that scale, Seshan argues advantage still rests on taste, speed, and daily use, not just model IQ.

What to watch next

Watch whether Work collapses into ChatGPT as a single box that chooses harness and model automatically.

Watch for multiplayer agent primitives, shared memory, and enterprise connectors that make cloud agents truly useful for finance, operations, and research teams.

If those ship before competitors normalize them, the third era stops being a demo and starts being how teams actually work.

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