gpt-5.3-codex request is routed to gpt-5.2-2025-12-11 (OAuth / ChatGPT Pro)

Environment:

• macOS 26.2 (arm64)
• Codex CLI: codex-cli 0.101.0
• Auth: Logged in using ChatGPT (OAuth), ChatGPT Pro account
• Repro in trusted git repo as well

Repro command:
cd "/Users/seung/Documents/원격접속/resume"
RUST_LOG='codex_api::sse::responses=trace' codex exec --sandbox read-only --model gpt-5.3-codex 'ping' 2>&1 \
| grep -m1 'SSE event: {"type":"response.created"' \
| sed 's/^.*SSE event: //' \
| jq -r '.response.model'

Observed:

• response.created -> response.model = gpt-5.2-2025-12-11 (every run)

Expected:

• response.created -> response.model should be gpt-5.3-codex (or a gpt-5.3-* codex variant), not 5.2