Lack of model selection control and transparency

4/10 Low

Codex automatically selects which model version handles a task based on internal criteria (task complexity, repo size) without user visibility or control. Developers cannot choose between model sizes despite understanding the trade-offs for their specific use case.

OpenAI CodexGPT-5.2
Category
dx
Stage
build
Freshness
persistent
Scope
single_lib
Upstream
open
Recurring
Yes
Buyer Type
individual
Maintainer
slow

Sources

Collection History

Query: “What are the most common pain points with Codex for developers in 2025?”4/4/2026

You still can't choose which model handles your task. Codex picks internally based on task complexity, repository size, and probably other factors I'm not privy to... this lack of control is annoying.

Created: 4/4/2026Updated: 4/4/2026