Three mystery model IDs spotted in Devin, hinting at GPT-6.2 and Fable 5.5
mark_k · x · 2026-11-08
A researcher found three mystery model IDs in Devin: "aurora-alpha" and "halo-alpha" (aliases "cactus" and "kraken"), each with five reasoning effort levels from low to max, plus "claude-donut-eap" in a Devin CLI build alongside Opus 5.5, Mythos 5.1 and Fable 5.1. The obvious guesses are GPT-6.2 Astra and Sol for the first two and Fable 5.5 for "donut", though these remain speculation. markk notes the configs are strikingly specific and suggests watching for one of the IDs to start answering requests.
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