AssemblyAI alternatives
10 tools that do a similar job to AssemblyAI in audio & voice.
Alternatives listed
10
Free options
1
Open source
2
Free picks: Whisper. Open source: Whisper, Fish Audio.
The alternatives
Deepgram
Free plan
Fast, cheap speech-to-text API built for high volume.
Cartesia
Free plan
Very low latency speech, built for realtime voice agents.
PlayAI
Free plan
Low-latency voice API for realtime agents and narration.
Resemble AI
Paid
Voice cloning with a deepfake-detection product alongside it.
Whisper
Free
OpenAI's open-source speech recognition, strong across accents.
Adobe Podcast
Free plan
Speech enhancement that makes phone audio sound studio-recorded.
Auphonic
Free plan
Automatic levelling and loudness mastering for spoken audio.
ElevenLabs
Free plan
Voice cloning and text-to-speech that most people can't clock as AI.
Fish Audio
Free plan
Open-weight speech models with a hosted API on top.
Krisp
Free plan
Strips background noise from calls in real time.
Side by side
| Tool | Pricing | What it's for |
|---|---|---|
| AssemblyAI (current) | Free plan | Speech-to-text API with diarisation, topics and summarisation. |
| Deepgram | Free plan | Fast, cheap speech-to-text API built for high volume. |
| Cartesia | Free plan | Very low latency speech, built for realtime voice agents. |
| PlayAI | Free plan | Low-latency voice API for realtime agents and narration. |
| Resemble AI | Paid | Voice cloning with a deepfake-detection product alongside it. |
| Whisper | Free | OpenAI's open-source speech recognition, strong across accents. |
| Adobe Podcast | Free plan | Speech enhancement that makes phone audio sound studio-recorded. |
| Auphonic | Free plan | Automatic levelling and loudness mastering for spoken audio. |
| ElevenLabs | Free plan | Voice cloning and text-to-speech that most people can't clock as AI. |
| Fish Audio | Free plan | Open-weight speech models with a hosted API on top. |
| Krisp | Free plan | Strips background noise from calls in real time. |
Head to head
Alternatives are matched on category and shared tags, then checked by a person. Ordering isn't for sale. Confirm pricing on each vendor's site — see the disclosure.