Codex computer use tested: Astra works while Luna and Sol fail on Plus plan
FamilyNP · reddit · 2026-09-21
A ChatGPT Plus user reports that Codex's computer use works reliably only on the Astra model, while the 5-hour usage cap on the Plus plan can be hit in as little as 10 minutes even in light mode.
Luna Light and Sol Light both fail at basic desktop navigation, citing a missing "app" or disabled plugin despite it being enabled. Switching back to Astra in a new thread restores functionality, suggesting inconsistent computer-use support across Codex models.
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