Open-source alternatives to Google Speech-to-Text

Google Speech-to-Text in the AI category. These are the open alternatives we recommend looking at.

Whisper

Speech recognition model from OpenAI that transcribes and translates speech in many languages.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars: 110k
Deployment: Library

whisper.cpp

Fast C/C++ port of Whisper for transcription on ordinary computers, mobiles or embedded devices.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars: 54.1k
Deployment: Library

faster-whisper

Faster variant of Whisper built on CTranslate2, with lower memory use.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars: 25.7k
Deployment: Library

FunASR

Speech recognition toolkit: training, streaming recognition, punctuation and speaker diarization.

MITPermissive

SaaS: YesClosed product: Yes

GitHub stars: 20.6k
Deployment: Library

NVIDIA NeMo Speech

NVIDIA's framework for training and running speech AI such as speech recognition and text to speech.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

GitHub stars: 18.5k
Deployment: Library

sherpa-onnx

Speech to text, text to speech and speaker diarization that run offline, including on mobile and embedded devices.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

GitHub stars: 15.1k
Deployment: Library

whisper-large-v3

Speech recognition model from OpenAI that transcribes and translates speech in many languages. The model card lists Swedish support.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

Deployment: transformers

whisper-large-v3-turbo

Faster, smaller version of Whisper large-v3 for transcription with slightly lower accuracy. Based on openai/whisper-large-v3. The model card lists Swedish support.

MITPermissive

SaaS: YesClosed product: Yes

Deployment: transformers

faster-whisper-large-v3

Whisper large-v3 converted to CTranslate2 format for faster transcription with faster-whisper. The model card lists Swedish support.

MITPermissive

SaaS: YesClosed product: Yes

Deployment: ctranslate2

distil-large-v3

Distilled version of Whisper that transcribes English faster with similar accuracy.

MITPermissive

SaaS: YesClosed product: Yes

Deployment: transformers

KB-Whisper (large)

Swedish speech-to-text model from the National Library of Sweden.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

Deployment: Python, Docker

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

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