# Why does Codex sometimes produce code with syntax errors? **URL:** \ **Category:** Codex\ **Created:** [February 2, 2026, 3:41pm UTC](https://community.openai.com/t/why-does-codex-sometimes-produce-code-with-syntax-errors/1373144 "2026-02-02T15:41:10Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Beliavsky](https://avatars.discourse-cdn.com/v4/letter/b/ba8739/32.png) [@Beliavsky](https://community.openai.com/u/Beliavsky)\ **Post date:** [February 2, 2026, 3:41pm UTC](https://community.openai.com/t/why-does-codex-sometimes-produce-code-with-syntax-errors/1373144/1 "2026-02-02T15:41:10Z")
Codex is a powerful coding agent, but I wonder why even when I give it full access to files on my PC, it sometimes produces Python, C++, or Fortran code with syntax errors. Usually the errors are easily fixable. I know it is often invoking the Python interpreter or C++ or Fortran compiler in the background, so how does invalid code slip through? Why doesn’t it alway iterate until syntactically valid code is produced? ---
**Author:** ![EricGT](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/ericgt/32/20571_2.png) [@EricGT](https://community.openai.com/u/EricGT)\ **Post date:** [February 2, 2026, 4:06pm UTC](https://community.openai.com/t/why-does-codex-sometimes-produce-code-with-syntax-errors/1373144/2 "2026-02-02T16:06:54Z")
> Why does Codex sometimes produce code with syntax errors? Remember that during training many programming languages were used for training and many of the popular mainstream imperative programming languages have very similar syntax. As such if the input sequence does not have enough detail to produced the needed output sequence you will get some bugs. Have you tired using a different model? (Rhetorical question) > **[Codex Models](https://developers.openai.com/codex/models/)** > > Meet the AI models that power Codex Have you tried using [skills](https://developers.openai.com/codex/skills/)? (Rhetorical question)