1. Google LLC
2. Amazon Web Services Inc.
3. Microsoft Corporation
4. IBM Corporation
5. Nuance Communications Inc.
6. OpenAI
7. Speechmatics Ltd.
8. Rev.com Inc.
9. Otter.ai
10. Verbit Ltd.
11. Sonix Inc.
12. Deepgram Inc.
13. VoiceBase Inc.
14. AssemblyAI Inc.