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Connect your AI

Connect OpenRouter

One key, many models

1At a glance

How it connects
Connects with an API key What’s an API key?
Cost
Free models available; others pay-as-you-go
With a free account
Free models available; others pay-as-you-go.
Research
Built-in web search

2Step by step

5 steps. Nuxa shows you these same steps, one at a time.

  1. Step 1

    Sign in or create a free OpenRouter account

    Nuxa opens the OpenRouter key page in your web browser. Sign in, or create a free account.

    Button in Nuxa: Open OpenRouter

    Open openrouter.ai/keys

    Trouble with this step?

  2. Step 2

    Click “Create Key”

    Give it any name, such as Nuxa. You can leave the credit limit empty.

    Button in Nuxa: I've created a key

    Trouble with this step?

  3. Step 3

    Click “Copy”

    Copy it now — it's shown only once. It starts with “sk-or-”.

    Button in Nuxa: I've copied it

    Trouble with this step?

  4. Step 4

    Nuxa finds your key

    Come back to Nuxa: it offers the key it finds on your clipboard. Or click Paste key.

    Button in Nuxa: Paste key

    Trouble with this step?

  5. Step 5

    Checking your key…

    Nuxa sends one tiny test message to OpenRouter, then keeps the key in your Mac's Keychain.

    Button in Nuxa: Test again

    Trouble with this step?

3Free account limits, in plain words

Free models available; others pay-as-you-go. Here’s what happens if you hit a limit, and what to do.

When you’ve used your allowance, Nuxa says:

You've reached OpenRouter's free limit for now. Wait a minute and try again (daily limits reset overnight), or choose another AI.

When the account has no credit, Nuxa says:

OpenRouter says your account has no credit yet. Add credit or a payment method on the OpenRouter website, then click Test again, or choose a free option.

Wait

Wait a little

Most limits clear within a minute; free daily limits reset overnight. Then click Test again in Nuxa.

Upgrade

Add credit or upgrade

Add credit or a payment method on the OpenRouter.

Switch

Choose another AI

Free choices: Google Gemini, Ollama on your Mac, or ChatGPT. You can switch any time.

4Troubleshooting

Tap a problem to see the fix.

Step 1 Sign in or create a free OpenRouter account

It asks me to verify my email
Open the email from OpenRouter and click the link, then come back.
The page didn't open
Open your web browser yourself and go to openrouter.ai/keys.
The page won't load
Check that you're online. A VPN or work network may block it; try another network.

Step 2 Click “Create Key”

It asks me to add credits
You don't need credits: Nuxa starts with OpenRouter's free models.
I don't see “Create Key”
Open the menu at the top right and choose Keys.

Step 3 Click “Copy”

I closed it before copying
Most services show a key only once. Create another key and copy that one.
I can't find a copy button
Select the whole key and press ⌘C.

Step 4 Nuxa finds your key

Nuxa says it looks like a different kind of key
You may have copied a key from another service. Go back to the key page and copy the key again with its Copy button.
Nuxa says the key looks incomplete
Part of it was missed. Use the Copy button next to the key rather than selecting it by hand.
macOS asks whether Nuxa may paste
Click Allow Paste. Nuxa only looks at the clipboard when you click Paste key, or when you come back to Nuxa during this step.
Paste key does nothing
Copy the key again, then click Paste key. Or click into the box under the button and press ⌘V.

Step 5 Checking your key…

OpenRouter didn't accept the key
Copy the whole key again with its Copy button and paste it. If you deleted the key on the website, create a new one.
It says the limit was reached
You've reached OpenRouter's free limit for now. Wait a minute and try again (daily limits reset overnight), or choose another AI.
It says there's no credit
OpenRouter says your account has no credit yet. Add credit or a payment method on the OpenRouter website, then click Test again, or choose a free option.
It says Nuxa couldn't reach OpenRouter
Check that you're online. A VPN, a work firewall or a content filter can block it; try switching the VPN off.

Any step Something else

I'm offline
Setting up needs the internet (except a model that's already on your Mac). Connect, then try the step again.
I use a VPN or a work network
VPNs and work firewalls sometimes block AI services. Try with the VPN off, or on another network.
macOS asks for permission
Nuxa may ask to paste from the clipboard or to open a web page. Click Allow; nothing happens without your click.
Nothing seems to happen
Click Check again, or go Back one step and try again. If you're stuck, click Get help — it tells us which step you're on.

5Still stuck?

Email us and tell us which step you’re on. A human reads every message.

Email info@getnuxa.com

6Last checked September 25, 2026

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