r/LovingCodex
Finally we can delete our threads in Codex!! Anyone else was waiting for this? :P
u/Koala_Confused — 1 day ago
Just compared token usage between GPT-5.4 and GPT-5.5 in Codex across all four reasoning modes (Low, Medium, High, and XHigh) using the exact same prompt and the same project as the baseline
Takeaways:
- GPT-5.5 scales token usage, turns, and cost much more aggressively at higher reasoning modes.
- GPT-5.4 remains relatively cost-efficient, even in XHigh.
- GPT-5.5 appears to spend significantly more tokens on iterative reasoning and context revisiting - basically seems to read more.
- GPT-5.4 feels more compressed (basically read less in our example - fewer docs) and execution-oriented by comparison.
One of the more interesting deltas:
GPT-5.5 XHigh
→ 456.6k input tokens
→ 40 turns
→ $2.58
GPT-5.4 XHigh
→ 296.6k input tokens
→ 30 turns
→ $0.84
u/Deep-Palpitation8315 — 8 days ago
Tibo "Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go." ➡️ this is being looked at
u/Koala_Confused — 7 days ago
▲ 2 r/LovingCodex
what tiny codex thing made you go “ok wait that helped”
curious lol. not the huge demo stuff, more like the tiny moments.
like it fixed some annoying setup thing, explained a weird error, made a messy note clearer, or just sat there patiently while you figured out what you were even trying to do.
what was yours?
u/West-Acadia-3906 — 11 days ago