›_ Codex Issues
Codex Issues / #15648

■ {"detail":"The 'GPT-5.3-Codex-Spark' model is not supported when using Codex with a ChatGPT account."}

Resolved 💬 16 comments Opened Mar 24, 2026 by richardrl Closed Apr 3, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor) responded on this thread — see the highlighted reply below.

What version of Codex CLI is running?

codex-cli 0.116.0

What subscription do you have?

Pro

Which model were you using?

gpt-5.3-codex-spark

What platform is your computer?

Linux 5.15.0-173-generic x86_64 x86_64

What terminal emulator and version are you using (if applicable)?

bash

What issue are you seeing?

codex resume --model GPT-5.3-Codex-Spark --dangerously-bypass-approvals-and-sandbox
WARNING: failed to clean up stale arg0 temp dirs: Directory not empty (os error 39)
⚠ Codex could not find system bubblewrap at /usr/bin/bwrap. Please install bubblewrap with your package manager. Codex will use the vendored bubblewrap in
the meantime.

╭───────────────────────────────────────────────────╮
│ >_ OpenAI Codex (v0.116.0) │
│ │
│ model: GPT-5.3-Codex-Spark /model to change │
│ directory: /data/…/projects/jepa_human_cotraining │
╰───────────────────────────────────────────────────╯

Tip: New Use /fast to enable our fastest inference at 2X plan usage.

› test

⚠ Model metadata for GPT-5.3-Codex-Spark not found. Defaulting to fallback metadata; this can degrade performance and cause issues.

■ {"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'GPT-5.3-Codex-Spark' model is not supported when using Codex with a
ChatGPT account."}}

What steps can reproduce the bug?

chatgpt pro account + codex cli latest + running any command

What is the expected behavior?

I should have access to codex spark!!!

Additional information

_No response_

View original on GitHub ↗

16 Comments

github-actions[bot] contributor · 3 months ago

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

  • #14706
  • #14735
  • #14190
  • #14889

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etraut-openai contributor · 3 months ago

Please use /feedback to upload your logs and post the thread ID here.

richardrl · 3 months ago

@etraut-openai 019cfd72-ee1b-7f70-8f77-e51f4c67114c

hossam-hani · 3 months ago

I also had the same issue

thread ID : 019d23f0-0b43-7fc0-a31a-deba2739258b

garydavidhill · 3 months ago

Also getting this

Thread: 019d2418-a02a-7f20-bfc1-963d0db7ad26

whoissteven · 3 months ago

same issue, 019d27f5-7250-7522-9ce8-b006d5e7fc35

richardrl · 3 months ago

@etraut-openai any update on this? It seems pretty urgent since we are paying for the full $200 plan and not getting the full features.

MrDesjardins · 3 months ago

Same issue: thread ID 019d3aee-aa5f-73b1-8fb7-f376c57fff7d

lu-sagar · 3 months ago

019d42bf-f3c5-79e1-ae85-8daa0c399899

iamgutz · 3 months ago

thread ID 019d448b-8495-7b32-b5fb-d491fe653ff6

{"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'gpt-5.3-
codex-spark' model is not supported when using Codex with a ChatGPT account."}}
jtarallo · 3 months ago

The model check is case sensitive, so you have to use -m gpt-5.3-codex-spark instead of -m GPT-5.3-Codex-Spark.
I'd still consider this a bug given the shady error message that does not at least make it clear that the model was not found.

etraut-openai contributor · 3 months ago

Yes, @jtarallo is correct. That explains the problem reported here. Model names are case sensitive.

iamgutz · 3 months ago

@etraut-openai This issue should be closed, the problem happens even when using gpt-5.3-codex-spark. See my comment below.
cc: @jtarallo

thread ID 019d448b-8495-7b32-b5fb-d491fe653ff6 `` {"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The 'gpt-5.3- codex-spark' model is not supported when using Codex with a ChatGPT account."}} ``
richardrl · 3 months ago

weirdly it seems to work now. i think you guys put in a fix. i used the /model to select, and the only option was the capitalized one, but i see the lower case one

neighborhood999 · 3 months ago

thread id: 019d5c13-8d0a-7ba1-beab-c04b07f07eef

I can see the spark, but I can't select this model:

<img width="698" height="100" alt="Image" src="https://github.com/user-attachments/assets/74a8f4ee-2b39-4700-b41c-06c3a454c720" />

<img width="729" height="208" alt="Image" src="https://github.com/user-attachments/assets/514745a5-f2cf-4891-8245-1d2706466cb4" />

ad-borges · 1 month ago

019e841d-70a4-7fa1-9cf2-50c51b914d2b using in VS Code