Blackbird as a LeetCode AI Helper
LeetCode is unproctored, so the value here is learning speed rather than stealth — but the same overlay carries into the interviews you are preparing for.
Why an overlay beats a second tab
- —No alt-tabbing between the problem and a chat window
- —Screenshot the problem instead of retyping it
- —Hints on demand rather than the full solution
- —Complexity analysis next to your own attempt
- —The same workflow you will use in a real interview
How Blackbird fits in
Most people practise with ChatGPT in a second tab, which breaks concentration and trains a habit that fails in a proctored interview. An overlay keeps the problem, your editor and the explanation on one screen.
Blackbird is a lightweight native Windows overlay drawn at the system compositor level. It is not a browser tab, an Electron window, or a shared surface, so it does not show up in screen recordings, screen-share streams, or active-window checks. It stays on top, accepts clicks without stealing focus, and disappears instantly with a hotkey.
Practical tips
- +Ask for a hint first, not the solution.
- +Write the brute-force version yourself, then ask how to optimise it.
- +Have it explain the complexity of your code, not the ideal answer.
- +Practise with the same hotkeys you will use in interviews.
Frequently asked questions
Is this cheating on LeetCode?
LeetCode is practice — there is nothing to cheat. The point is faster learning with explanations in place.
Which models can I use?
OpenAI, Claude, Gemini, DeepSeek, Kimi, Grok, Mistral, Perplexity, OpenRouter or a local Ollama model, with your own keys.
Does it work in the LeetCode editor?
Yes. It works over any window, including the browser editor.
Is there a free tier?
Yes, with a 15-minute session limit.
You are responsible for following the rules of any exam, employer or institution you use Blackbird with. No tool can account for human observation or behavioural review.