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Kalypta
Kalypta is a local Mac app that reshapes meeting audio in real time so AI transcribers miss most words while people on the call can still hear you.
About Kalypta
Kalypta is meeting privacy software from Deveillance. It runs a small local model on an Apple Silicon Mac and reshapes outgoing audio during a call. The goal is to interrupt AI transcription of the speaker’s voice without stopping the conversation for the people on the other side.
Deveillance positions Kalypta for meetings where an AI notetaker or transcriber may be listening. The company says people on the call still hear the speaker, while transcribers and note takers do not get usable text. The public product claim is that AI fails to transcribe about 2 out of 3 words when protection is on.
Audio stays on the device. Deveillance states that voice data is never sent to the cloud and that nothing is stored after the meeting ends. Kalypta has been tested on Google Meet, Zoom, and Microsoft Teams. Other meeting apps may work, but they are not yet part of the published benchmarks. The current release is a macOS beta on Apple Silicon only.
The current beta can add audible noise. Deveillance says speech stays broadly intelligible and that models are still being improved. Published research compares disruption of AI transcription with human intelligibility using word error rate plus ESTOI, PESQ, and A-weight scores.
Key Features
- Local audio model: A small on-device model reshapes speech in real time during a meeting.
- AI transcription disruption: Protection is designed so transcribers and note takers do not receive usable text.
- Human-readable speech: People on the call can still follow the speaker, with some noise in the current beta.
- On-device privacy: Audio is processed on the Mac, is not uploaded, and is not stored after the meeting.
- Meeting app coverage: Tested with Google Meet, Zoom, and Microsoft Teams.
- Kalypta Audio input: Users select Kalypta Audio as the microphone in the meeting app so protection is applied.
Pricing
- Mac beta: Free Listed on the Deveillance homepage as free for macOS. Access is through the Kalypta beta waitlist, with rollout described as gradual. No paid plans are published on the official pages.
Use Cases
- Block AI transcription of your voice on Google Meet, Zoom, or Microsoft Teams
- Keep a call usable for people while reducing usable text for AI notetakers
- Process meeting audio on a Mac without sending voice data to the cloud
- Protect sensitive discussions when another participant may be running a transcriber
- Test on-device meeting privacy before wider platform support arrives
Pros & Cons
Pros:
- Runs locally on the Mac and does not upload voice data
- Works at the audio layer, so it does not depend on kicking a visible meeting bot
- Published benchmarks cover Google Meet, Zoom, and Microsoft Teams
- Current Mac beta is listed as free
Cons:
- Apple Silicon macOS only in the current beta
- Current build can add noticeable noise to the voice
- Live transcription disruption is lower than pre-rendered clip results
- Other meeting platforms are not yet benchmarked
Integrations
Google Meet, Zoom, Microsoft Teams
FAQ
What is Kalypta?
Kalypta is a Deveillance Mac app that runs a small local model and reshapes your meeting audio in real time. It is built to interrupt AI transcription of your voice while people on the call can still hear you.
Does Kalypta send my voice to the cloud?
No. Deveillance says the model runs on the device, voice data is never sent to the cloud, and nothing is stored after the meeting ends. Support docs also state that audio is processed on the Mac and is never uploaded.
Will other people on the call still understand me?
Yes, according to Deveillance. Speech stays broadly intelligible. The current beta can show clear signs of noise, and the company says it is still improving the models.
Which meeting apps work with Kalypta?
Kalypta has been tested on Google Meet, Zoom, and Microsoft Teams. Other platforms may work, but Deveillance has not published benchmarks for them yet.
Which computers can run Kalypta?
The current beta runs only on Apple Silicon macOS devices. Deveillance says it plans to expand support.
Which AI transcribers is it designed to disrupt?
Deveillance says the model was refined against open-weight transcription architectures, including Whisper models and NVIDIA voice models. It is intended to work across a range of transcription systems rather than one named meeting bot.
How do I set it up in a meeting?
Select Kalypta Audio as the microphone in your meeting app. Headphones help avoid the issue of your voice sounding quiet to others.
How well does it block transcription?
The product page says AI fails to transcribe about 2 out of 3 words when Kalypta is on. Published live tests from September 16, 2026 show AI word error rates of 50.51% on Google Meet, 56.55% on Zoom, and 59.69% on Microsoft Teams.
Is Kalypta free?
The Deveillance homepage lists Kalypta as free on macOS. Access is currently through the beta waitlist. No paid packages are listed on the official product pages.
How do I get help?
Use the Kalypta support guide or email [email protected] with your operating system, meeting app, and any error message.
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Last edited
September 17, 2026 at 2:07 AM by Venkatraman Chandrasekaran
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