Pipecat is free, with no paid plan attached. Ultravox is freemium — a usable free tier with paid plans above it. Both are listed under Real-Time Voice Agents, so this is a like-for-like comparison. Neither is ranked above the other — Flocci carries no sponsored placement.
Pipecat is free, with no paid plan attached and is listed for BSD-2-Clause open-source Python framework for real-time voice/multimodal agents. Ultravox is freemium — a usable free tier with paid plans above it and is listed for speech-native processing skips the STT-to-text bottleneck, preserving tone/cadence/pitch. Both sit in Real-Time Voice Agents.
Pipecat is the cheaper starting point: it is free, with no paid plan attached, while Ultravox is freemium — a usable free tier with paid plans above it. Pricing tiers here come from the catalog, not from a promotional page.
Choose Pipecat if you need BSD-2-Clause open-source Python framework for real-time voice/multimodal agents; choose Ultravox if you need speech-native processing skips the STT-to-text bottleneck, preserving tone/cadence/pitch. Flocci AI Tools does not rank one above the other — it shows both feature sets side by side and lets the requirement decide.
| Pipecat | Ultravox | |
|---|---|---|
| Pricing tier | Free | Free tier + paid plans |
| Free to start | Yes | Yes |
| Category | AI Agents & Automation | AI Agents & Automation |
| Type | Real-Time Voice Agents | Real-Time Voice Agents |
| Listed capabilities |
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| Tags | pipecat, open source conversational ai framework, realtime multimodal agents, voice assistant framework, python voice ai, free | ultravox, speech native voice ai, real time voice model, low latency voice agent, open weight voice model, free |
| Website | github.com | ultravox.ai |
| Full page | Pipecat details → | Ultravox details → |
| Alternatives | Pipecat alternatives → | Ultravox alternatives → |