Every's Vibe Check: Opus 5.5 wins back Codex converts at ~60% less than Fable

every · x · 2026-09-27

Every published a Vibe Check of Opus 5.5: unlike the argumentative, rambling Opus 5, the new version impressed testers and dethroned Fable 5.1 as Kieran Klaassen's daily driver.
Former Claude power users Mike Taylor and Tyler Nishida, who had switched to Codex, are reconsidering — Nishida: "My jaw dropped at least five or six times this week."
Priced at roughly 60% less than Fable 5.1's token price, it's described as a "smaller Fable": faster and cheaper, great for big end-to-end coding projects, though writing still buries the point and some prefer Codex for knowledge work.
Key thesis: lower AI costs make more tasks worth delegating to agents — extra code reviews, verification passes, speculative PRs — so cheaper models mean more tokens used.

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