Jonah Daian
| Jonah Daian | |
| Occupation | Entrepreneur, software developer |
|---|---|
| Known for | Co-founder of VoiceOS |
Jonah Daian is an entrepreneur and co-founder of VoiceOS, a voice-to-text productivity tool described as "The Siri for Productivity." VoiceOS is backed by Y Combinator as part of its Spring 2025 batch and is based in San Francisco, California.[1]
Career
Daian co-founded VoiceOS in 2023 alongside Kai Brokering.[2] The company develops a voice-based productivity tool that allows users to speak naturally and have their speech converted into polished written text across a wide range of applications. VoiceOS functions as a universal voice interface, working within apps such as Slack, Gmail, Notion, VS Code, ChatGPT, Figma, Zoom, Microsoft Teams, iMessage, WhatsApp, and others, requiring no additional setup.[3]
A key feature of VoiceOS is its dictation mode, which interprets the user's intended meaning rather than transcribing speech verbatim. For example, if a user corrects themselves mid-sentence while speaking, VoiceOS produces a clean output reflecting only the corrected version. The product positions voice as a replacement for the keyboard in many productivity workflows, including writing emails, revising documents, and composing messages.[4]
According to Y Combinator's company profile, VoiceOS aims to be "a true voice operating system for the next era of computing," turning voice into a seamless interface that bridges "the gap between thought and expression." The product is available for download on Windows.[5]
Prior to VoiceOS in its current form, Daian and Brokering appear to have been involved with Wako AI, a research effort exploring voice agent technology, including methods for AI agents to conduct human-sounding conversations in multiple languages. The project focused on automating customer service and support through phone-based AI agents.[6]
As of 2025, VoiceOS has two employees and is classified as an active company in the productivity sector by Y Combinator.[7]
References
- ↑ "VoiceOS – Y Combinator". 'Y Combinator}'. Retrieved 2026-03-19.
- ↑ "VoiceOS – Y Combinator". 'Y Combinator}'. Retrieved 2026-03-19.
- ↑ "VoiceOS". 'VoiceOS}'. Retrieved 2026-03-19.
- ↑ "VoiceOS". 'VoiceOS}'. Retrieved 2026-03-19.
- ↑ "VoiceOS – Y Combinator". 'Y Combinator}'. Retrieved 2026-03-19.
- ↑ "VoiceOS". 'VoiceOS}'. Retrieved 2026-03-19.
- ↑ "VoiceOS – Y Combinator". 'Y Combinator}'. Retrieved 2026-03-19.