Sign in with ChatGPT

If you have a paid ChatGPT plan, you can use it to run OpenAI models in Kolega Code — no separate OPENAI_API_KEY required. Sign in once with /login chatgpt and Kolega Code uses your subscription for the OpenAI (ChatGPT subscription) provider.

Eligibility

Plan	Runs models
Plus	Yes
Pro	Yes
Business	Yes
Free	No

A Free plan can sign in, but can’t run models this way — use an OPENAI_API_KEY instead.

Signing in

In the TUI composer, run:
```
/login chatgpt
```
Your browser opens to the ChatGPT sign-in page. Complete the sign-in there. (If the browser doesn’t open, the composer prints a URL you can paste in yourself.)
When sign-in finishes, the browser shows a confirmation page and Kolega Code switches to the OpenAI (ChatGPT subscription) provider, ready to use.

Models

The ChatGPT-subscription provider (identifier openai_chatgpt) exposes the Codex model line-up:

Model	Label
`gpt-5.5`	GPT-5.5 — default, frontier coding and reasoning
`gpt-5.4`	GPT-5.4 — strong everyday coding
`gpt-5.4-mini`	GPT-5.4 Mini — fast and economical
`gpt-5.3-codex-spark`	GPT-5.3 Codex Spark — ultra-fast

Switch between them with /model or from the Settings tab. Each model supports a reasoning thinking effort you can set with /effort.

Where credentials live

Sign-in tokens are stored in your settings.json under oauth_tokens, in the same state directory as the rest of your settings, with 0600 permissions (readable and writable only by your user). They refresh automatically in the background, so a single sign-in keeps working across sessions.

Checking status

doctor reports whether you’re signed in, without exposing any token:

kolega-code doctor --project .

For the ChatGPT-subscription provider it shows signed in as <email> (<plan>) or not signed in. See doctor.

Signing out

To remove your stored ChatGPT credentials:

/logout chatgpt

After signing out, switch to another provider — or sign in again with /login chatgpt — to keep working.