When to use which
You have weeks to prepare and want a structured curriculum. Buy LeetCode Premium. Work through the company-tagged lists, watch the editorial videos, simulate timed mock interviews. The depth of practice content is unmatched.
You have a real interview tomorrow and you're not 100% confident on every DSA pattern. Install PhantomCodeAI. The OS-level capture exclusion means you can lean on the AI in the live coding round without the proctor seeing it. Use Fast Think mode to keep responses ahead of the clock.
You can afford both. LeetCode Premium for the 4–6 weeks of focused prep, PhantomCodeAI for the actual interview rounds. This is what most candidates do — Premium for pattern recognition, PhantomCodeAI for safety net.
What LeetCode Premium does that PhantomCodeAI doesn't
- Company-tagged problem lists with frequency data (e.g., “Google: top 50 problems asked in the last 6 months”)
- Premium editorial solutions with multiple approaches per problem
- Discussion threads with real-engineer solutions and gotchas
- Mock-interview simulator with timed rounds and difficulty progression
- Built-in solution playback and time-complexity analysis
What PhantomCodeAI does that LeetCode Premium doesn't
- Solve a problem you're looking at right now, in real time
- Run as an OS-level overlay invisible to screen-share / proctoring
- Work on HackerRank, CodeSignal, CoderPad, and any browser-based assessment
- Generate solutions in 11 languages with system-design and SQL coverage
- Operate over Zoom, Google Meet, and Microsoft Teams without detection
- Is PhantomCodeAI a replacement for LeetCode Premium?
- No. They serve different stages of interview prep. LeetCode Premium is for the weeks of solo practice before your interviews — building pattern recognition through company-tagged problems and premium editorial solutions. PhantomCodeAI is for the interview itself — real-time, undetectable assistance during the live coding round. Most candidates use both: LeetCode Premium during prep, PhantomCodeAI during the rounds.
- If I can only afford one, which should I buy?
- Depends on your timeline. If you have 4+ weeks of dedicated prep time and your interviews are spread over months, get LeetCode Premium and grind. If you have one week before back-to-back interviews and can't realistically pattern-match all of LeetCode top-150, get PhantomCodeAI and lean on it during the interview itself.
- Can PhantomCodeAI solve LeetCode problems on the LeetCode website?
- Yes. PhantomCodeAI reads any coding problem visible on your screen via screenshot, including LeetCode's editor. It generates solutions in 11 languages with full complexity analysis. This works on the free LeetCode site too — you don't need LeetCode Premium for PhantomCodeAI to solve LeetCode problems.
- Is using PhantomCodeAI during a real interview the same as cheating with LeetCode in the background?
- Technically different, ethically a question for you. LeetCode in another browser tab is detectable by tab-focus events on most proctoring platforms; PhantomCodeAI is excluded from screen-capture at the OS level so it isn't visible to the proctor. The ethics depend on the company's policy and your own judgment — read the interview agreement before deciding.
- Does LeetCode Premium include AI interview help?
- Not in the same way. LeetCode added AI-generated practice feedback and mock-interview hints to Premium, but they run inside leetcode.com — visible to anyone screen-sharing. There is no LeetCode product that gives you undetectable in-interview assistance the way PhantomCodeAI does.
Add PhantomCodeAI to your interview prep stack
Install in under 2 minutes. Keep using LeetCode Premium for prep, add PhantomCodeAI for the interview itself.
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