voice agents

Azure Neural TTS lists $15 per million characters against $38 to $80 for Cartesia and ElevenLabs, and keeps no real-time text by default. The vendors' latency claims measure different things, so test p95 from your own region before you sign.

A $0.05 voice AI minute bills $0.09 to $0.14 once transcription, the model, the voice and the phone line are added. On a 40,000-minute inbound workload, ElevenLabs Agents was the cheapest managed platform and Bland AI the most expensive.

Inworld bought Ultravox and gave its own voices a free TTS-2 upgrade. Agents on ElevenLabs, Cartesia and other third-party voices got one line: nothing changes today.

Apple drafted a 5,000-job AppleCare cut around its new AI phone agent, then shelved the layoffs and kept the agent. Support leaders should gate headcount cuts on verified resolution, not containment.

Inception's Mercury Voice cuts the voice-agent LLM line to about $0.009 a minute, but its 320ms latency is model-only and its benchmark win arrives without numbers. Bake it off on your own calls before you swap.

LiveKit bought Loophole Labs and its Substrate hypervisor to cut voice-agent startup below three seconds. The announcement says nothing about Architect, Loophole's paid Kubernetes spot-migration product, or its pre-GA AGX sandboxes.

An arXiv benchmark of eleven production voice-agent stacks ran 3,300 simulated calls against a real database. The researchers found task completion collapses on complicated calls, per-call cost varies thirteenfold with no link to quality, and a verification leak hides inside correct refusals.