Codex Spark memory leak
Resolved 💬 2 comments Opened Feb 12, 2026 by dionny Closed Mar 30, 2026
💡 Likely answer: A maintainer (jif-oai, contributor)
responded on this thread — see the highlighted reply below.
What version of Codex CLI is running?
0.100.0
What subscription do you have?
Pro
Which model were you using?
gpt-5.3-codex-spark-xhigh
What platform is your computer?
_No response_
What terminal emulator and version are you using (if applicable)?
_No response_
What issue are you seeing?
If Codex spawns subagents specifically when using Codex Spark, something bad happens with memory usage. Usage spiked to 120 GB of RAM, eventually crashing.
What steps can reproduce the bug?
Ask Codex to spawn 6 subagents to learn the codebase.
What is the expected behavior?
No memory leak
Additional information
_No response_
2 Comments
Do you have any custom configuration?
Could you do
/feedbackand send us the session ID + show me you~/.codex/config.tomlplease?Closed for lack of response