ChatGPT can interview you. Structured practice makes you better at interviewing. Those are different products — here's where the line actually sits.
Let's get the awkward part out of the way: yes, you can open the Gemini or ChatGPT app right now, type "act as a senior backend interviewer," and have a decent voice conversation. The voices are excellent, it's free, and for casual practice it genuinely works. We build an interview practice platform and we're telling you that upfront, because pretending otherwise would insult you.
And yet interview coaching is a thriving industry, structured practice tools keep growing, and engineers who get offers consistently describe doing something more deliberate than chatting with a bot. The interesting question is what exactly is missing from the chatbot version — and when it matters.
If you've never talked through your resume out loud, one evening of this is worth more than another night of LeetCode. Seriously — try it.
The chatbot waits for you to define the interview: the prompt, the seniority, the follow-up behavior, when to push back. That's three jobs at once — and the one that gets dropped is being a realistic interviewer, because you're busy being the prompt engineer. Real interviews are unpleasant in specific ways: they drill into the weak claim in your answer, they don't move on just because you finished a sentence. Getting that requires the system to hold the structure, not you.
A chat can't tell you your system-design answers score 6/10 while your behavioral answers score 8/10 — or that you've improved two points over six sessions. Without rubric scoring and history, practice is just repetition. You don't know what to fix, so you re-strengthen what you already knew.
Ask it for a "structured 5-question loop with follow-ups" and watch: by question three it's chatting, the arc is gone, and the behavioral round you needed never happened. Deliberate practice has a shape — warm-up, depth, design, applied problem solving, leadership — and shape is exactly what an improvising chatbot trades away for conversational flow.
A chatbot can converse in German or Japanese. Running a senior-engineer loop — with correct technical vocabulary, rubric scoring, and follow-up drilling — in the language your actual interview will be in is a different bar. If you're an engineer interviewing outside your native language, generic tools give you neither the structure nor the specificity.
| ChatGPT / Gemini | Structured practice (EvalFrame) | |
|---|---|---|
| Starting a session | Write a good prompt yourself | One tap — role, arc, and rubric preset |
| Interview shape | Whatever survives the chat drift | Fixed 5-part loop every session |
| Follow-ups | If you ask for them | Automatic drill-down on your weak claims |
| Scoring | Vibes | 0–10 rubric per answer + committee summary |
| Progress over weeks | Scroll back through chats | Score history and weak-spot tracking |
| Languages | Converses everywhere | Structured, scored loops in 100+ languages |
| Price | Free | Free tier daily; Pro €5/mo |
Use both — for different things. Use the chatbot to explore ideas, ask "what does a staff engineer say about X," and warm up your voice the night before. Use structured practice when you're actually preparing for a loop: when it matters that every session covers the full arc, that your answers get scored the same way each time, and that your weak areas get drilled until they aren't.
The engineers who get offers rarely practice more than everyone else — they practice deliberately: measured, structured, and repeated. A chatbot is a great conversationalist. It is not a training plan.
The difference in one sentence: ChatGPT interviews you; structured practice makes you better at interviewing.
Try a structured mock interview — free, no signup for the first loop Practicing in another language? →