Stay up to date with the latest Ultravox (formerly Fixie.ai) updates, new features, and improvements. Here's what changed in 2026.
Continued investment in the speech
native Ultravox model with improved turn
Expanded telephony and WebRTC integration paths, making it easier to ship phone agents without building custom media servers. Stronger emphasis on tool calling inside live voice sessions, positioning Ultravox as the voice layer for agentic applications rather than just a conversational endpoint. Ongoing release of open
weight Ultravox model variants on Hugging Face, broadening self
hosting options for compliance
Refined developer experience around the JavaScript SDK and agent configuration following the Fixie.ai → Ultravox rebrand and product consolidation.
Ultravox (formerly Fixie.ai) is actively developing new features. Check back regularly or follow their official channels for the latest updates.
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Changelog last updated March 2026