Four practice modes
Full Pitch, Rapid Q&A, Term Sheet Negotiation, and Mock IC — beginner to expert.
AI Voice Coach: the AI pitch coach that talks back
Talk to an AI venture capitalist out loud. Pick a persona and a practice mode, deliver your pitch, field follow-ups, then get a turn-by-turn scorecard with strengths, weaknesses, and suggested rewrites.
- Practice modes4
- Live captionsYes
- Scored dimensions11
app.nautis.io/ai-coach
What is AI Voice Coach?
An AI pitch coach is a voice partner that plays the investor so you can rehearse before the real meeting. In Nautis, the AI Voice Coach runs a live spoken session in one of four modes, from Full Pitch to Mock IC, with a VC persona you choose. Afterwards it scores you out of 100 across 11 dimensions and shows turn-by-turn coaching with better versions of what you said.
Most founders rehearse a pitch by reading it. That's the wrong test. The hard part of an investor meeting is the third follow-up question, the one that lands while you're still finishing your answer to the second. The Voice Coach is built for that moment: you speak, the AI listens and replies in voice, and with Barge-in on you can cut it off mid-sentence just as you would a real person.
Setup is a three-step wizard. Practice Mode sets the pressure: Full Pitch (about 20 minutes, beginner), Rapid Q&A (about 10, intermediate), Term Sheet Negotiation (about 15, advanced) and Mock IC (about 25, expert). VC Persona sets who's across the table, from supportive seed investors to skeptical late-stage operators, each with a style, sector focus and firm type. Details lets you attach a deck you've already run through the Pitch Deck Analyzer, so the questions come from your actual slides.
The review is where the value is. Overview gives a Total Score out of 100 and a level from Needs Work to Exceptional. Suggestions lists strengths, weak spots, rewrites and turn-by-turn coaching. Conversation is the timestamped transcript, and Speech covers pace, filler words and pauses.
Built for
- Founders rehearsing for a real pitch this week
- Teams practicing the Q&A around their deck
- Operators preparing for a tough investment committee
Capabilities
What you can do with AI Voice Coach
Everything ships out of the box. No setup, no plugins, no extra tools.
Tunable VC personas
Pick from supportive seed investors to skeptical late-stage operators with different sectors and styles.
Live captions & barge-in
See live captions, interrupt the AI, or use push-to-talk for focused practice.
Deck-grounded feedback
Attach a deck you've run through the analyzer so the AI grounds questions in your actual slides.
Detailed scorecard
Strengths, weaknesses, suggested rewrites, and turn-by-turn coaching after every session.
Use cases
How startups use AI Voice Coach
A practice week before demo day
Monday, a Full Pitch with a supportive seed persona to get the story flowing. Wednesday, Rapid Q&A with the deck attached. Friday, Mock IC with the most skeptical persona you can find. The guide suggests three or four runs of the same mode to see the score trend, which matches how rehearsal works anyway.
Fixing a weak ask
If Ask & Use of Funds keeps coming in as your lowest dimension, open Suggestions and read the rewrite of the exact sentence where you named the raise. Change the slide, then run a short Rapid Q&A just to test the new answer.
Rehearsing a valuation conversation
Pick Term Sheet Negotiation before a call with a lead. The AI pushes on valuation, terms and the size of the ask. Watch the Negotiation Readiness and Listening & Composure scores, because they show whether you held your position or rushed to agree.
Cutting filler words from a remote pitch
Turn on Live Captions and check the Speech tab after each run. Seeing every "so, basically" written out is more convincing than a co-founder telling you about it.
Quick start
From zero to using AI Voice Coach
- 1
Pick a practice mode
Full Pitch (~20 min), Rapid Q&A (~10 min), Term Sheet (~15 min), or Mock IC (~25 min).
- 2
Choose a VC persona
Select the persona that mirrors the investor you're meeting.
- 3
Configure the session
Optional title, attach a deck, toggle captions and push-to-talk.
- 4
Talk, then review
Deliver your pitch, then read the scorecard and rewrites.
How the scoring pass works
When the session ends, or hits the 15-minute recording cap set by your plan, Nautis runs an AI scoring pass and opens the Review page. Give it a moment before you judge the result.
The score is weighted across 11 dimensions: Clarity & Concision, Problem & Customer Insight, Solution & Differentiation, Market Size & Dynamics, Traction & Metrics, GTM & Sales Motion, Moat / Defensibility, Financials & Unit Economics, Ask & Use of Funds, Listening & Composure, and Negotiation Readiness. Your top scores show as strengths and the lowest as where to focus. Each session uses AI credits for the live conversation, the transcription and the scoring run.
AI pitch coach vs a co-founder run-through vs a paid human coach
| What you need | Co-founder or friend | Nautis AI Voice Coach | Paid human pitch coach |
|---|---|---|---|
| Available at 11 pm the night before | Maybe | Yes, whenever you open a session | Rarely |
| Questions grounded in your deck | If they've read it | Yes, when you attach an analyzed deck | Yes |
| A repeatable score to track | No | Total Score out of 100, 11 weighted dimensions | Sometimes a rubric |
| Delivery feedback | Impressions | Speech tab: pace, filler words, pauses | Yes, with nuance |
| Willing to be harsh | Usually too polite | Pick a skeptical persona | Yes, if you ask |
| Knows the actual partner you're meeting | No | No | Sometimes, and that's worth paying for |
Plans and limits
- The AI VC Coach module must be enabled on your plan, and each session uses AI credits. Monthly credits are 1,000, 2,000 or 2,600 depending on plan; compare them on pricing.
- Live recording is capped at 15 minutes per session, set by your plan, even though Full Pitch and Mock IC are planned as longer modes.
- Creating sessions needs create permission and a verified email.
What AI Voice Coach doesn't do
- The 15-minute cap means a full Mock IC may be cut short. Nautis ends the session and starts scoring when you reach it.
- There's no public share link for a review. Co-founders can open it only if they have access to the module inside your organization.
- It rehearses you against personas, not a specific fund's partners. Use it for reps, and still do your homework on who you're meeting.
- It needs a working microphone and browser permission. If audio fails, reload; transcripts so far are saved.
AI Voice Coach questions
Is an AI pitch coach worth using if I already practice with my co-founder?+
Yes, for a different reason. Your co-founder knows the answers and fills gaps for you without noticing. The AI doesn't, and it scores the same dimensions every time, so you can tell whether the fourth run was actually better than the first.
Which practice mode should I start with?+
Full Pitch if you haven't said the whole story out loud yet. Move to Rapid Q&A once the story holds together, and save Mock IC for the week before a partner meeting, because it cross-examines you from several angles at once.
Can I practice without a pitch deck?+
Yes. Skip the deck step and the AI still runs the mode and asks realistic questions for the persona. Attaching an analyzed deck makes the follow-ups much more pointed.
Can I pause or stop a session early?+
Click the mic icon to pause your mic and again to resume. The red end-call button finishes early, and the AI closes out before you're redirected to scoring.
Can I resume a session later?+
Only if it's still in SETUP or IN_PROGRESS. Once a session has ended and been scored, you can reopen the review from the sessions list but not continue talking.
Does Nautis record my voice?+
The audio is processed to transcribe your speech and generate the AI's reply. Transcripts are stored against the session so you can review them. Treat practice sessions like any other confidential work — they live inside your organization.
Can I use it without a pitch deck?+
Yes. Skip the pitch deck step. The AI will still run the chosen mode and ask realistic questions based on the persona.
Why is the AI so harsh?+
Some personas are intentionally skeptical. Switch persona if you want a friendlier tone — for example, pick a supportive seed-stage persona for early practice.
Can I share my review with a co-founder?+
The review page lives inside your organization. Anyone in the org with permission to view the AI VC Coach module can open it. There isn't a public share link.
The mic isn't working — what's wrong?+
Check the browser address bar for a microphone permission prompt. If it's blocked, allow it and reload. Some browsers need you to dismiss a one-time 'use this microphone' picker before audio starts flowing.
What's the difference between Full Pitch and Mock IC?+
Full Pitch is one persona simulating a single meeting. Mock IC is longer and modeled on an investment committee — tougher cross-examination from multiple angles.
Do I need a fancy mic?+
No — your laptop or headphone mic is fine. A headset reduces background noise for cleaner transcription.
Can I revisit the transcript later?+
Yes. Each session keeps the full transcript on the Conversation tab, next to the scorecard, so you can reopen it from the sessions list.
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