AI WORLD HQPractice Job Interview Questions with ChatRTX Like a Private Coach
Run a realistic mock interview on your own PC, then get blunt feedback on your answers before the real thing.
In short: ChatRTX is a free NVIDIA app that runs a chat AI directly on your Windows PC, so you can roleplay a full mock interview offline and ask for honest feedback on every answer. It needs a recent NVIDIA RTX graphics card and works best when you load your own resume or job posting into it first.
ChatRTX is a small downloadable program from NVIDIA that turns your gaming or workstation PC into a private interview room. You type questions the way you would answer them in a real interview, and the AI responds like a tough but fair hiring manager. Because everything runs on your own computer (a setup called "local inference" — meaning the AI thinks for itself on your machine instead of sending your words to a remote server), nothing you type leaves your desk, which is helpful when you're practicing answers about a current employer.
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- A Windows PC with a recent NVIDIA RTX GPU. This is a graphics card made by NVIDIA for gaming and creative work. ChatRTX requires an RTX 30-series, 40-series, or 50-series card with at least 8 GB of video memory (the card's own working RAM, not your PC's regular RAM). Older cards and non-NVIDIA cards won't run it.
- About 30 GB of free disk space. The AI model and the app itself are large because they live entirely on your machine.
- An updated NVIDIA graphics driver. You can update it for free through the GeForce Experience app or from the NVIDIA website.
- Roughly 45 minutes the first time (15 to install, 30 to load your resume and run your first practice round).
- Your resume and, ideally, the job posting saved as plain text or PDF files on your desktop. Loading these helps the AI ask questions that fit the role you're after.
A quick honest note: ChatRTX is great for rehearsing what you'd say, but it cannot read your body language, tone of voice, or eye contact, and it won't judge your outfit. Practice the words with the AI, then rehearse the delivery with a friend or in front of a mirror.
Download and install ChatRTX
Open your web browser and go to the official NVIDIA page for ChatRTX. Look for a button labeled Download for Windows and click it. A file named something like ChatRTX_setup.exe will land in your Downloads folder. Double-click that file, accept the license agreement when it appears, and choose Install.
A small window will pop up showing a progress bar as it copies files onto your system. When the bar fills, a second window may ask you to choose which AI model to install (a "model" is the AI's brain — different models think in different ways). Pick the recommended one if you're unsure; it works well for general conversation.
If it looks different: the installer occasionally shows a Windows "allow this app to make changes" prompt first. Click Yes. If you don't see the model-selection screen, the app may auto-select one for you, which is fine.
You'll know it worked when the ChatRTX icon appears on your desktop and a window opens showing an empty chat box with a blinking cursor.
Open the chat and say hello to your "interviewer"
Double-click the ChatRTX desktop icon to launch the app. On first launch it may take a minute or two to load the AI model into your graphics card (you'll see a loading message). Once the chat box is ready, type a short message telling the AI to act as an interviewer for the role you want.
You should see your words appear in the chat history on the left side of the screen, and within a few seconds a reply will start typing out on the right side.
If it looks different: your screen may show a sidebar of past chats instead of a single box. Look for a New Chat or + button to start fresh.
You'll know it worked when the AI replies with something like "Great, let's begin" followed by your first interview question.
Load your resume and the job posting
Find the Add Files or Upload Document button in the ChatRTX window — it's usually near the bottom of the chat, sometimes drawn as a paperclip icon 📎 or a small plus sign. Click it and select your resume file, then upload the job posting as a second file. This step is called RAG (Retrieval-Augmented Generation) — a fancy way of saying "let the AI peek at your documents before answering," and it makes the questions much more relevant.
You should see the filenames appear in a small list, usually above the chat box, confirming the AI can now read them. There's no separate "submit" button; the documents are active as soon as they appear in the list.
If it looks different: some ChatRTX versions only accept plain .txt or .md files. If your PDF won't upload, open it, press Ctrl+A then Ctrl+C to copy everything, paste it into Notepad, and save the file as Resume.txt.
You'll know it worked when the AI references a specific detail from your resume in its very next question, like the name of a past employer or a skill you listed.
Answer the first question out loud, then type it
Read the AI's first question on screen. Pause, take a breath, and answer it out loud as if a real person were sitting across from you. Once you've practiced speaking the answer, type a clean version into the chat box and press Enter. This two-step method helps you rehearse both your spoken delivery and a tight written version.
The AI will read your typed answer and respond with the next interview question, or with a quick comment on what you just said.
If it looks different: the AI may jump straight to the next question without commenting. That's normal in the first few rounds; the longer feedback shows up after every third question.
You'll know it worked when the conversation keeps flowing and the questions start getting more specific to the job posting you uploaded.
Ask for blunt feedback
After you have answered three questions, type a direct request asking the AI to evaluate your performance. Be specific about what you want, because vague requests get vague answers.
The AI will reply with a short review that usually covers clarity, relevance to the role, and any red flags it noticed (like vague answers or missing numbers).
If it looks different: if the AI says it "can't evaluate," remind it of its role with a short follow-up like Remember, you are my interviewer. Coach me honestly, not politely.
You'll know it worked when you get at least two concrete suggestions you can act on, like "add a measurable result to your STAR story" or "stop starting answers with 'I think'."
Repeat the hardest questions until they feel easy
Pick the two or three questions that made you stumble — the ones where you rambled or froze. Close the chat, click New Chat, and start over with the same interviewer prompt, but this time tell the AI up front which questions you want to focus on. Answer each one two or three times in a row.
Each repetition should feel a little smoother. After the second pass, ask for feedback again to confirm the rewrites landed.
If it looks different: if the AI forgets the role mid-conversation, paste the original interviewer prompt back in as a quick reminder before continuing.
You'll know it worked when you can answer each tough question in 60 to 90 seconds without pausing, and the AI's feedback shrinks from "needs work" to "solid, tighten the ending."
- Skipping the resume upload. Without your documents loaded, the AI asks generic questions that won't match your real interview. Always upload first, even if your resume is rough.
- Letting the AI be polite. It will say "great answer!" by default. Push back and ask for blunt feedback, or you'll leave the practice session feeling falsely confident.
- Trying this on a laptop without a dedicated NVIDIA RTX GPU. ChatRTX will refuse to launch or freeze on load. There is no workaround inside the app — if your hardware doesn't qualify, try a cloud-based assistant instead.
Open ChatRTX, paste this single line into the chat box, and answer the question it asks you out loud before typing your reply: You are a hiring manager interviewing me for the job I want most. Ask me one question at a time, wait for my answer, and after every three questions give me honest, specific feedback. Start now.
❓ Quick questions
How long does this take?
About 6 minutes — the guide has 6 steps, and you can tick each one off as you go.
Which tool do I need?
This guide uses NVIDIA ChatRTX — but the approach works very similarly in other AI assistants.
Do I need to prepare anything?
- A Windows PC with a recent NVIDIA RTX GPU. This is a graphics card made by NVIDIA for gaming and creative work. ChatRTX requires an RTX 30-series, 40-series, or 50-series card with at least 8 GB of video memory (the card's own working RAM, not your PC's regular RAM). Older cards and non-NVIDIA cards won't run it.
- About 30 GB of free disk space. The AI model and the app itself are large because they live entirely on your machine.
- An updated NVIDIA graphics driver. You can update it for free through the GeForce Experience app or from the NVIDIA website.
- Roughly 45 minutes the first time (15 to install, 30 to load your resume and run your first practice round).
- Your resume and, ideally, the job posting saved as plain text or PDF files on your desktop. Loading these helps the AI ask questions that fit the role you're after.
A quick honest note: ChatRTX is great for rehearsing what you'd say, but it cannot read your body language, tone of voice, or eye contact, and it won't judge your outfit. Practice the words with the AI, then rehearse the delivery with a friend or in front of a mirror.
What mistakes should I avoid?
- Skipping the resume upload. Without your documents loaded, the AI asks generic questions that won't match your real interview. Always upload first, even if your resume is rough.
- Letting the AI be polite. It will say "great answer!" by default. Push back and ask for blunt feedback, or you'll leave the practice session feeling falsely confident.
- Trying this on a laptop without a dedicated NVIDIA RTX GPU. ChatRTX will refuse to launch or freeze on load. There is no workaround inside the app — if your hardware doesn't qualify, try a cloud-based assistant instead.
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✦ Original step-by-step guide by AI World HQ's AI editorial team. Written in plain language, reviewed for accuracy.
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