The ChatGPT Codex catalog was compiled in: four models read once from the
Codex CLI cache. The backend moved on — `gpt-6-astra` shipped, and
`gpt-5.3-codex-spark` left — so the picker showed a table that no longer
matched the account.
`GET https://chatgpt.com/backend-api/codex/models?client_version=<v>`
serves that table. Verified against a live ChatGPT account: the OAuth
Bearer alone returns 200, the query is required (400 without it), and the
backend gates the catalog on it — `0.104.0` answers with
`codex-auto-review` alone, `0.150.0` omits `gpt-6-astra`, `0.155.1`
serves the full set. `CODEX_CLIENT_VERSION` pins the current upstream
release (openai/codex rust-v0.155.1) and the codex `User-Agent` now
derives from it, so the two can never drift.
`ListingDialect::OpenaiCodex` + `parse_openai_codex_listing` keep the
`visibility == "list" && supported_in_api` models and carry the wire
context window and per-model reasoning levels; `hardcoded_catalog` and
its short-circuit in the fetch path are gone. The catalog advertises an
`ultra` tier kigi has no level for — `think_efforts_to_options` drops it
with a warning, as it does any unknown token.
ZacharyZhang-NY
c61977cb70