Coming soon — join the waitlist

Your invisible co-host.
Always listening. Never on camera.

Real-time AI that feeds you fact-checks, follow-up questions, and context — right as your guest is talking. Plus, on-screen AI personas that react live for your audience.

No spam. We'll email you when it's ready.

Sound familiar?

"You said it on air. Now you're not sure it was right."

Your guest throws out a stat. You nod along. Later, you find out it was wrong — and so were you for not catching it.

"Your guest said something fascinating. You blanked on the follow-up."

The perfect question was right there. You thought of it 20 minutes later, in the shower. Your audience will never hear it.

"You spend more time prepping than recording."

Hours of research for a 45-minute episode. Background on guests, topics, potential rabbit holes. What if that prep happened live?

Two modes. One tool.

Mode 1

Whisper Mode

A private sidebar only you can see.

  • Live fact-checking Claims get verified in real-time. See sources before you respond.
  • Suggested follow-ups AI listens to the conversation and surfaces the question your audience wants asked.
  • Guest context Relevant background, recent work, and talking points — pulled up as the conversation unfolds.
  • Live research Someone mentions a paper, a company, a number? Sidecast finds it before you need to say "I'll look that up later."
Whisper Mode — Only you see this
Fact check "Revenue hit $2B" — Confirmed. SEC filing Q3 2025, actual: $2.1B
Follow-up Ask about the 40% margin drop they didn't mention
Context Guest published a contrarian take on this exact topic last week in Forbes
Mode 2

Persona Mode

An AI character that reacts on-screen for your audience.

  • Live reactions Your AI persona reacts to what's being said — agreeing, questioning, adding color commentary.
  • Customizable personality Skeptic, cheerleader, devil's advocate, domain expert — tune the persona to match your show's vibe.
  • Audience engagement Viewers love the "third voice." It sparks chat activity and keeps people watching longer.
  • OBS/stream overlay Drop it into your existing setup. Shows as a widget — no extra hardware or cameras needed.
YOUR STREAM
SidekickAI "Hold on — that contradicts what they said 10 minutes ago about market fit 🤔"

How it works

1

Connect your audio

Sidecast listens to your mic feed or stream audio in real-time. Works with any podcast or streaming setup.

2

Choose your mode

Whisper for private host assistance. Persona for on-screen audience engagement. Or both at once.

3

Go live

AI processes the conversation in real-time. Insights appear in under 3 seconds. No post-production needed.

Built for

Interview podcasters

Never miss a follow-up. Look like you did 10x the prep.

Panel & debate shows

Real-time fact-checks keep discussions honest and sharp.

Live streamers

AI persona reacts on screen. Chat engagement goes up. Viewers stay longer.

Call-in shows

Instant background on callers and topics. No dead air while you Google.

Be first to try Sidecast.

We're building this for podcast hosts who care about being accurate, interesting, and never caught off-guard. Get early access when we launch.

Free during beta. No credit card required.