Codex Spark unable to compact conversations

[dionny]

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?

■ Error running remote compact task: {
"error": {
"message": "Your input exceeds the context window of this model. Please adjust
your input and try again.",
"type": "invalid_request_error",
"param": "input",
"code": "context_length_exceeded"
}
}

What steps can reproduce the bug?

I can reliably reproduce the problem. Compaction doesn't seem to be working with Codex Spark.

What is the expected behavior?

Compaction should work.

Additional information

No response

[aibrahim-oai]

Can you do /feedback?

[dionny]

■ Error running remote compact task: {
  "error": {
    "message": "Your input exceeds the context window of this model. Please adjust
your input and try again.",
    "type": "invalid_request_error",
    "param": "input",
    "code": "context_length_exceeded"
  }
}

────────────────────────────────────────────────────────────────────────────────────

• Model changed to gpt-5.3-codex xhigh

• Context compacted

This suggests Codex Spark has a smaller context window than Codex.

[dionny]

Done! Thread ID = 019c53f7-344a-7fe3-a92b-631660a8567f

[skypher]

Here's mine: 019c5b45-9eeb-7ea0-9623- f917e08494fe

[yassirusa]

When will this be worked on. Codex-5.3 and codex-5.3-spark are completely useless and they keep churning tokens without editing any code until they "run out of room"

[ioma8]

This needs to be fixed! Disrupts flow!

[JohnnyVicious]

I stopped using codex-spark all together coz of this, the only workaround is switching model to GPT-5.4 with a restart/resume and then run compact. But after a bit you run into the same error again after you switched to spark.