11 Jul 2026 · TubeCortex
How to Use Your Own OpenRouter API Key with TubeCortex
Connect your own OpenRouter API key to TubeCortex in about 5 minutes. Your key is used first, so your free platform credits stay untouched.
To run TubeCortex on your own OpenRouter API key, you make one at openrouter.ai, add a little credit, then paste it into your Account page. From that moment TubeCortex answers your questions and writes your summaries on your own AI account instead of the platform's. Think of an OpenRouter API key like a prepaid SIM card for AI: you top it up once, and every summary or question runs on your balance, at your rates.
Here's the part most people care about. When you switch TubeCortex to your key, your free platform credits stay untouched. Your key gets used first.
At a glance
| Aspect | Detail |
|---|---|
| What this is | Connecting your own OpenRouter API key so TubeCortex runs on your AI account |
| Best for | Power users and privacy-minded folks who want to run on their own credits |
| What you need | A free OpenRouter account and a few dollars of credit on it |
| What you get | TubeCortex uses your key first, so your free credits are left alone |
| Time to set up | About 5 minutes |
| Cost | You pay OpenRouter directly for what you use. Start free |
What "bring your own key" actually means
Normally, TubeCortex pays the AI bill for you out of your free credits or your wallet. Bring your own key, sometimes shortened to BYOK, flips that around. You bring your own AI account, and TubeCortex just borrows it to do the work.
The analogy that fits: it's like bringing your own card to a restaurant that would otherwise put the meal on a house tab. Once you pay with your own card, the house tab (your free credits) doesn't get touched at all.
Why would you want this? Two honest reasons. You get direct control over which AI model runs and what it costs. And nothing of yours on the platform gets spent while you're on your own key, which some people simply prefer.
How to use your own OpenRouter API key in 5 steps
Step 1: Make a free OpenRouter account
Go to openrouter.ai and sign up. It's free to create an account, and you can use a Google login if you'd rather not make another password. OpenRouter is the middleman that gives you one account to reach lots of different AI models, so you don't need a separate account with each AI company.
Step 2: Create an API key
Once you're in, open your account menu and find the Keys page. Click to create a new key, give it a name you'll recognize later (something like "TubeCortex" works), and copy it the moment it appears. An API key is basically a password that lets one app spend on your account, so treat it like one. You usually only see the full key once, so copy it before you close that box.
Step 3: Add a little credit
An empty account can't run anything, so add some credit. Open the Credits or Billing page on OpenRouter and top up a small amount to start. You're paying OpenRouter directly here, and you only spend what you actually use. A few dollars goes a long way for summaries and questions, and you can always add more later.
Step 4 (optional): Pick which models you'll use
OpenRouter lists a big menu of AI models from different companies. You don't have to choose anything to get started, since a sensible default just works. But if you want a specific one, you can. Inside TubeCortex, once your key is connected, there's an "Add a custom model" option where you paste the model's id (OpenRouter shows the id next to each model, in a format like openai/gpt-5 or anthropic/claude-opus-4.7-fast).
Note: cheaper or lightweight models can be a little worse at following instructions. One thing they sometimes skip is the clickable timestamp on an answer. If jumping straight to the exact moment in a video matters to you, lean toward a stronger model.
Step 5: Paste your key into TubeCortex
Open your Account page in TubeCortex and find the card titled "Use your own AI account." Click Connect next to OpenRouter, paste the key you copied in Step 2, and save. Your key is stored encrypted, and the page only ever shows you a masked version of it after that.
One last switch matters. Set your Payment mode to "My API key." The little badge at the top of your Account page will then read "Active: My API key," which is your confirmation that TubeCortex is now running on your key and not on your free credits.
That's it. From here, every summary and every answer runs on your OpenRouter account.
What BYOK-priority means (your key is used first)
This is the detail worth being precise about, because it's the whole reason people set this up.
When you've connected an OpenRouter key and set your Payment mode to "My API key," TubeCortex checks your key first, before it ever looks at your free credits. So your free credits just sit there, unspent, for as long as you're on your own key. The "Active: My API key" badge is the truth of what's being charged, and it keeps saying "My API key" even while you still have free credits in the bank.
Turn it back off, and things go back to normal: free credits get spent first, then your wallet. Your key is only in charge while you've chosen it to be. You're always the one deciding who pays.
What this looks like in practice
Say you signed up, got your free starter credits, and you want to save them for later while you kick the tires. You spend five minutes connecting your own OpenRouter key with a few dollars on it, then flip Payment mode to "My API key." Now you can summarize a dozen videos and ask a channel brain a stack of questions, and every cent of that comes off your OpenRouter balance. Your free credits are exactly where you left them, ready for the day you actually want them. One setup, and your two pools of money never get mixed up.
A quick note for different people
Privacy-minded users: running on your own key keeps the AI usage on an account you control. Heavy users: your key means your rates and no platform markup on the model itself. Everyone else: you can honestly skip all of this. Free credits and the wallet work great, and TubeCortex will happily turn any channel into a brain without a key at all.
What it can and can't do
Note: today, TubeCortex supports OpenRouter as the bring-your-own-key provider. One key, one paste, and you're set. Other providers aren't wired in yet.
A key changes who pays for the AI, and which model runs. It doesn't change what TubeCortex can watch. It still needs a video with clear, spoken audio it can actually listen to, so a silent or music-only clip gives it nothing to go on, key or no key. And your answers are still grounded in what's said in each video, with a citation to the moment it came from, no matter whose account is footing the bill.
Frequently asked questions
Does using my own key stop TubeCortex from spending my free credits? Yes. When your OpenRouter key is connected and your Payment mode is set to "My API key," TubeCortex uses your key first and leaves your free credits untouched. You can confirm it by the "Active: My API key" badge at the top of your Account page.
Is my OpenRouter API key safe in TubeCortex? Your key is stored encrypted, and the Account page only ever shows a masked version of it after you save. You can remove it with one click at any time, which disconnects it right away.
Do I have to add credit to OpenRouter? Yes, an OpenRouter account needs some credit before it can run anything, because you're paying OpenRouter directly for what you use. A few dollars is plenty to start, and you can top up more whenever you like.
Which AI model should I pick? You don't have to pick one to get started, since a sensible default is already in place. If you do want a specific model, paste its OpenRouter id into the "Add a custom model" box. Just know that cheaper, lighter models are sometimes worse at little things like adding a clickable timestamp to an answer.
Can I switch back to free credits later? Yes, anytime. Change your Payment mode away from "My API key" and TubeCortex goes back to spending your free credits first, then your wallet. Your key stays saved unless you remove it, so you can flip between them whenever you want.
Ready to run on your own key?
Connecting your own OpenRouter API key takes about five minutes: make the key, add a little credit, paste it into your Account page, and switch Payment mode to "My API key." From then on TubeCortex runs on your account, and your free credits stay right where they are until you choose to use them. Build your first brain free, then connect your key whenever you're ready.