For interview preparation in 2027, the general assistants are close: ChatGPT is the most versatile, with a good voice mode; Gemini is convenient for research and live voice practice; Claude is strong at editing your own stories; and Microsoft Copilot suits people already in Microsoft 365. All have free tiers with limits. None scores spoken answers or follows a call by itself, which is where a dedicated tool takes over. For that part, our pick is CoPilot Interview, which we make. Here is which AI to use for which task, with prompts. A detailed comparison is in ChatGPT vs Claude vs Gemini for interview prep.
Which AI for which task
| Task | Good choices | Notes |
|---|---|---|
| Researching a company | Gemini, ChatGPT with search, Microsoft Copilot | Check every fact against the source |
| Predicting questions from a posting | Any of them | Ask for twenty, then pick the likely ones |
| Tightening a story you wrote | Claude, ChatGPT | Tell it not to add facts |
| Voice role-play | ChatGPT voice, Gemini Live | Ask for criticism, not praise |
| Coding explanation | ChatGPT, Claude | Attempt the problem first |
| Scored spoken mock interview | CoPilot Interview ★ Best choice | From your résumé; score out of ten |
| Following a live call | CoPilot Interview ★ Best choice | General assistants cannot hear another app's call |
Free plans have limits that change often. AI tools for interview preparation has more.
Prompts that work
- Here is a job description and my résumé. List the twenty most likely questions, and mark the five I am least prepared for and why.
- Here is my story. Shorten it to 150 words, keep every fact, and do not add any achievement I did not state.
- You are a skeptical hiring manager. Ask me one question at a time. After each answer, give me the weakest sentence and one specific fix.
- What would you doubt about this answer? Ask me the three follow-up questions that would expose it.
- More are in ChatGPT mock interview prompts.
What all of them get wrong
- They invent facts, including facts about you, if you let them.
- They praise weak answers unless told not to, and often even then.
- They produce polished, similar answers, and interviewers increasingly recognize that style.
- They may be out of date on a company's recent news.
- Do not paste confidential work material into any of them.
A sensible way to combine them
- Use whichever general assistant you already have for research and drafts.
- Say the drafts out loud, and change anything you would not naturally say.
- Use a voice mode for one or two rounds of pressure.
- Use a dedicated mock interview to get a score and a transcript.
- See our full comparison for 2027 if you want a dedicated tool on the day, and only where that is allowed.
If you can only use one, use the one you already open every day. Consistent practice with a slightly weaker model always beats occasional practice with the best one.
Where CoPilot Interview fits
CoPilot Interview is an AI interview assistant rather than a general chatbot, with spoken mock interviews and live help on Windows and macOS. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. We recommend using a general assistant alongside it. In a real interview, follow your employer's rules.
Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.
Frequently asked questions
Which AI is best for interview preparation?
ChatGPT is the most versatile, Gemini is handy for research and voice, Claude is strong at editing, and Microsoft Copilot suits Microsoft 365 users. For scored spoken practice, our pick is CoPilot Interview, which we make.
Is ChatGPT better than Gemini for interviews?
They are close. Try the same prompt in both and use the one you prefer. The prompt matters more than the model.
Which is best for free?
All have free plans with limits. You probably already have what you need for drafting.
Can these AIs follow my interview?
Not by themselves. A general assistant cannot read Zoom, Teams or Meet audio from another app.
Can I trust the answers?
Check every fact. They can invent details, including about your own experience.
Practice this interview before the real one
The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.
Start a mock interview