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codex - 💡(How to fix) Fix Cannot use gpt-5.3-codex-spark model with Plus Account

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Error Message

■ {"type":"error","status":400,"error":{"type":"invalid_request_error","message":"The

Code Example

*[main][~/dev]$ codex -m gpt-5.3-codex-spark
╭────────────────────────────────────────────────────────╮
│ >_ OpenAI Codex (v0.130.0)                             │
│                                                        │
│ model:     gpt-5.3-codex-spark high   /model to change │
│ directory: ~/dev                                       │
╰────────────────────────────────────────────────────────╯

  Tip: Try the Codex App. Run 'codex app' or visit
  https://chatgpt.com/codex?app-landing-page=true


› hi


■ {"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."}}
RAW_BUFFERClick to expand / collapse

What version of Codex CLI is running?

codex-cli 0.130.0

What subscription do you have?

Plus

Which model were you using?

gpt-5.3-codex-spark

What platform is your computer?

Darwin 24.6.0 arm64 arm

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

Ghostty

What issue are you seeing?

*[main][~/dev]$ codex -m gpt-5.3-codex-spark
╭────────────────────────────────────────────────────────╮
│ >_ OpenAI Codex (v0.130.0)                             │
│                                                        │
│ model:     gpt-5.3-codex-spark high   /model to change │
│ directory: ~/dev                                       │
╰────────────────────────────────────────────────────────╯

  Tip: Try the Codex App. Run 'codex app' or visit
  https://chatgpt.com/codex?app-landing-page=true


› hi


■ {"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."}}

After running out of my limit with gpt 5.5, i try to switch to gpt-5.3-codex spark as the /status says i have 100% gpt-5.3-codex-spark limit remaining, but i'm unable to use it.

I've tried all of the known 'fixes' including:

  • restarting cpu, restarting codex
  • upgrading to latest
  • delete models_cache.json

What steps can reproduce the bug?

Uploaded thread: 019e1d5d-0ec0-75f1-9805-ef5628b96939

What is the expected behavior?

No response

Additional information

I have commented on another similar issue but it hasn't been interacted with since March.

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#prompt formatting#chain error#conversation history#tool integration#LLM response

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