Hosts you design
Up to four hosts per station, each with a personality, a way of talking, energy, humor and catchphrases. Start from a preset or describe one in a sentence. Two hosts hold a real conversation.
Personal AI radio
Your music. Your hosts. Your station.
Host-Caster turns your own music into a radio station. Between songs, AI hosts you design talk about what just played, your calendar, the news and your day.
How it works
On air in three steps
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Bring your music
Add songs and folders from your device, or connect your music server, internet radio, YouTube or Spotify.
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Design your hosts
Start from a preset or describe a host in a sentence. Pick how they think and how they sound.
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Go on air
Press play. Your songs flow like a station, and your hosts break in between them.
Features
Radio that knows you
Everything a great station has, made for an audience of one.
Your life in the breaks
The weather outside, what is on your calendar, the news you follow, a birthday coming up, your notes and reminders. You choose what each station talks about, and how often.
Any AI, any voice
Use the included Host-Caster AI and voices, or bring your own: OpenAI, Claude, Gemini, Grok, OpenRouter, ElevenLabs and more, or a model running on your own computer.
Works offline
Offline or between AI connections, a scripted fallback reads short lines about the song, the time, the weather and your day in your device's own voice. Weather and calendar are kept for later. The music never goes quiet.
Call in
Talk to your hosts by voice or by typing, and they answer you on air. Share some news, ask a question, or just say hi.
Any music source
Your own files, your Subsonic or Navidrome server, thousands of internet radio stations, YouTube and Spotify Premium. On Android, keep your favorite music app and let your hosts break in.
On air
Hosts that sound like real radio
Breaks land between songs with an ident chime and live captions. The music dips under the voice, and the last line can ride over the intro of the next song.
- Written while the song plays, so there is never dead air
- Two or more hosts banter with each other
- Every break saved in your on-air history
Hosts
Give them a personality
Who they are, how they talk, how much energy and humor they bring, what they love talking about and what they never bring up.
- Eight presets to start from
- Describe a host in a sentence and let the AI fill in the rest
- A brain and a voice for each host
Stations
You run the show
Pick the hosts for each station, how often they talk, for how long, and how loud the music stays underneath.
- Talk after every song, or every few
- Short, normal or long breaks
- Topics per station: songs, weather, calendar, news and more
Library
All your music in one place
Import songs and whole folders with their tags and covers, make playlists, like songs, and mix in internet radio, YouTube and Spotify.
- MP3, M4A, FLAC, OGG, OPUS, WAV and more
- Your songs stay on your device
- Crossfade, queue, lock screen controls
Listen in
What a break sounds like
Two hosts sharing one brain, right after a song ends.
On airHost-Caster 88.1, 7:42 AM
Last Bus Home City Pulse, just played
Jules
You just heard Last Bus Home, from City Pulse. Still sounds like the night before, doesn't it?
Maya
Good morning, Sam. Rain clears by eight, and you have the dentist at ten, so maybe skip the snooze button today.
Jules
And a heads up: Nora's birthday is on Saturday. Up next, something softer. Lantern Swim, by The Quiet Tides.
Everywhere
On every screen you own
Open it in any browser, or get the app on your phone. One account works on every device.
Rather run it yourself? Host-Caster is free and open source. Self-host it
Pricing
Pick what is included
Start free with your own AI and voices, or let Host-Caster take care of them. Cancel anytime.
Free
Bring your own AI and voice
$0forever
Start free- Hosts, stations and every music source
- Your own AI key, or a model on your own computer
- Your device's own voices, or your own voice key
- Scripted fallback lines until an AI is connected
- One account on web and phone
No limits from us. Your own providers set theirs.
Voices included
Bring your own AI, voices included
$7.99/month
Get Voices included- Natural Host-Caster voices for every host
- A few premium voices for your favorite hosts
- Use your own AI key or a local model
- Everything in Free
Fair use, a month: about 150 hours of Host-Caster voices (12 with premium voices).
AI brain included
Bring your own voice, AI brain included
$7.99/month
Get AI brain included- Host-Caster AI writes every break, no key needed
- Your device's voices, or your own voice key
- Smart breaks about your music and your day
- Everything in Free
Fair use, a month: about 250 hours of AI-written breaks.
Best value
Everything included
AI brain and voices included
$14.99/month
Get Everything included- Host-Caster AI writes every break
- Natural Host-Caster voices, premium ones too
- Nothing to set up: press Go on air
- Everything in Free
Fair use, a month: about 250 hours of AI-written breaks and 150 hours of Host-Caster voices (12 with premium voices).
Go on air tonight
Your music, your hosts, your station. Set it up in a minute.