Comparison
Best Speaker Identification Tools
What it does, and how to check it yourself.
The best tool depends on what you are building. For meeting notes, Otter and Fireflies name speakers from the meeting platform. For your own product, AssemblyAI, Deepgram and pyannoteAI offer speaker labels through an API.
Checked November 2026 on each tool's own site. We ran no tests of our own.
Is there a free speaker identification tool?
Yes. Otter's free plan includes it, and the pyannote.audio library is open source if you can run it yourself.