Seattle voice AI startup Ultravox, formerly known as Fixie, acquired by Inworld
Inworld acquires Ultravox to fill a gap in real-time voice—the startup's $17M bet on interruption-handling speech now part of a larger character-AI play.
Why it matters
An M&A play to consolidate voice-AI capability into a character/NPC platform. Ultravox's conversational turn-taking tech (raised $17M to build) now powers Inworld's agent dialogue. The acquisition signals where voice agents need to go—natural interruption and overlap—but the deal amount remains undisclosed, limiting clarity on valuation or strategic urgency.
The key facts
8 to knowInworld acquires Ultravox (Seattle, founded 2022 as Fixie)
Ultravox previously raised $17M for speech models handling conversational turn-taking and interruptions
Acquisition price undisclosed
Published October 2, 2026
Ultravox (formerly Fixie, Seattle) acquired by Inworld
Ultravox founded 2022, raised $17M prior to acquisition
Specialization: speech models for conversational turn-taking and interruption handling
Inworld strategic intent: enhance real-time voice technology
Go to the source
GeekWiregeekwire.com
Publisher excerpt: Inworld has acquired Seattle-based AI startup Ultravox for an undisclosed sum to enhance its real-time voice technology. Founded in 2022 as Fixie, the startup previously raised $17 million to build speech models capable of handling conversational turn-taking and interruptions.