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Pianissimo for Swedish
Fine-tuned for Swedish speech recognition. It reaches a 4.5% word error rate on Common Voice and runs locally on an ordinary computer.
Introducing Klang Pianissimo
Pianissimo.
Frontier speech-to-text models for Nordic languages.
Klang Pianissimo is a set of open speech-to-text models for Nordic languages, now covering Swedish and Danish. Run them on your own infrastructure and choose where your audio is processed.
Run Pianissimo on your language.
Each model is trained for its language and released with open weights. Choose your language model below.
How Pianissimo performs.
Pick a language to see how the model compares with other speech recognition models.
Pianissimo achieves word error rates comparable to KB-Whisper large, at 64 times the speed.
Speed and accuracy in one picture
Faster to the right. Fewer errors toward the top.
Scroll sideways to see the full chart.
Best of 19 models on Danish speech, open and closed.
The best Danish speech recognition model
Open source and fast
An open ecosystem
for Nordic speech.
Most large speech models are trained mainly on English, and the Nordic languages fall behind. We think that's best solved together, in the open. That's why Pianissimo is released with open weights, so anyone can build on it and share what they make. This is our way of contributing to the Nordic speech ecosystem.
Built with Pianissimo.
Pianissimo is open under CC BY 4.0 and runs on your own computer. Most of the projects below are built by the community, and you can submit your own for us to feature here.
- Built on Pianissimo for Swedish
- Works with Pianissimo for Danish
- Built on Pianissimo for Swedish
- Works with Pianissimo for Danish
Chrome extension
Pianissimo for Chrome
Transcribe audio files and microphone recordings right in Chrome. Your audio stays on your computer.
- Built on Pianissimo for Swedish
Open source
OSTT
Dictate with a keyboard shortcut and use the text in your apps or terminal. OSTT uses Pianissimo through Berget AI.
- Built on Pianissimo for Swedish
Open source
Mindtalk
Hold a key, speak and get the text in any app on your Mac. Mindtalk uses Pianissimo for Swedish and everything runs locally.
- Built on Pianissimo for Swedish
Mac app
Aloud
Dictate in Swedish right on your Mac, without the cloud. Aloud lets you choose Pianissimo as its speech recognition model.
- Built on Pianissimo for Swedish
Open source
Sagascript
Press a shortcut, speak and get the text in any app on Mac or Windows. Sagascript uses Pianissimo for Swedish and your voice never leaves the computer.
- Built on Pianissimo for Swedish
Open source
Pianissimo Meet
Transcribe Teams and Zoom meetings in real time, locally on Windows. Pianissimo Meet is built on Pianissimo and sends no audio to the cloud.
- Built on Pianissimo for Swedish
Prototype
Real-time transcription
Transcribes Swedish conversations as they happen and keeps track of who says what. The prototype uses Pianissimo through Berget AI.
- Built on Pianissimo for Swedish
iPhone app
SnickSnack
Transcribe calls, meetings and interviews in Swedish right on your iPhone and get a summary. SnickSnack uses Pianissimo and everything stays on your phone.
- Built on Pianissimo for Swedish
Mac app
Speak.
Speak. is an app for both dictation and meeting notes on the Mac that Anthon Bäckström built for personal use, on Pianissimo. All audio and all text stays on the computer, nothing is sent to the cloud.
- Built on Pianissimo for Swedish
Prototype
Social Transcript
Record a conversation and get a draft in templates such as BBIC, IBIC and ASI, ready to review. Social Transcript uses Pianissimo and a local language model, so everything runs on the computer.
- Built on Pianissimo for Swedish
Mac app
Sæga
Hold a key, speak and the text lands where your cursor is. Sæga runs Pianissimo on the Mac's Neural Engine and all audio stays on the computer.
- Built on Pianissimo for Swedish
Windows app
Avskrift
Meetings, dictation, file transcription and de-identification in one program for Windows. Avskrift can run Pianissimo and everything stays on the computer.
- Built on Pianissimo for Swedish
Mac app
Parlissima
Dictate in Swedish on your Mac with a click on your new friend, the penguin. Parlissima uses Pianissimo and everything runs locally.
- Built on Pianissimo for Swedish
Web app
Kompis
Rehearse real conversations in Swedish, by voice or text, if you understand the language but hesitate to speak. Kompis uses Pianissimo to understand what you say.
- Built on Pianissimo for Swedish
Experiment
Pianissimo for Home Assistant
An add-on that aims to turn Home Assistant into a local Swedish voice assistant, with Pianissimo for speech recognition. It's an early experiment that isn't finished yet, so contributions on GitHub are welcome.
- Built on Pianissimo for Swedish
Prototype
Sayback
Record a short voice note in Swedish, listen back and confirm the instruction before it's handed on. Sayback uses Pianissimo for the transcription.
What are you building?
We’d love to see your project and share more ways to use Pianissimo.
AI for conversations that matter.
Klang is a Nordic AI speech lab building a perfect memory of all your conversations - with transcriptions, summaries, and insights. Built in Europe, with trust at its core.