Voice AI agentsthat actually sound human.
Sub-700ms time-to-first-token. 30+ languages. Production APIs that handle interruptions, function calls, and your custom voice.
Allen
Your AI Assistant
612ms time-to-first-token, 980ms round-trip.
30+ languages with accent-aware voices.
99.5% uptime SLA in production.
AI purpose-built for your industry’s toughest challenges.
Your customers’ problems don’t look like everyone else’s. Your AI shouldn’t either. OneInbox is tuned to the workflows, urgency, and stakes that define your industry.
What sets OneInbox apart.
Voice infrastructure looks similar on a slide. The numbers diverge in production.
| OneInbox | Others | |
|---|---|---|
| Sub-700ms TTFT | ||
| Streaming and interruption handling | ||
| Bring your own LLM and voice | ||
| Function calling at the protocol level | ||
| Self-host option |
Trusted by teams that ship.
Replaced our internal voice stack and went from 1.8 second round-trip to 900ms in two days.
Hiroshi Tanaka
Head of Engineering · Meridian Mobility
Frequently asked.
Time-to-first-token sits at p50 612ms and p99 1.1s under typical conditions. Round-trip from end-of-speech to first audio is roughly 980ms.
OpenAI, Anthropic, Google, Llama, Mistral, and any private fine-tune you can serve over an OpenAI-compatible endpoint.
Yes. Define functions as JSON schema or expose any MCP server. Webhooks fire on call.started, turn.completed, and function.invoked.
Yes. We ship a Helm chart for Kubernetes. Customers in regulated industries run the entire stack inside their VPC.
Ready to put voice in production?
Pull the SDK, build a prototype today, ship it next week.