Voice AI Reliability Infrastructure
Voice AI built forHealthcare.
One API. 18+ voice providers benchmarked in real time, routed per language, with automatic failover under 500ms. Built for teams that can't ship a misheard word.
Trusted by teams where every word matters
How it works
Benchmark. Route. Failover.
One API across every voice provider — optimized per language, failed over on the fly. Ship accuracy you can audit.
Benchmark every provider
Speko runs your real audio — accents, noise, industry terms — against 18+ STT, LLM, and TTS providers. Accuracy, latency, cost, scored weekly.
Route per call, per language
Every request goes to the provider that wins for that language, that accent, that use case. No more one-size-fits-all vendor lock-in.
Failover before it breaks
When a provider drops quality, hits a rate limit, or goes down, Speko swaps in under 500ms. Your users never hear a dropped word.
Integration
One API. Every provider.
Install the SDK, point it at a language and a vertical, and Speko picks the right provider for every call. Failover handled.
- TypeScript and Python SDKs
- Drop-in Vapi, Retell, LiveKit adapters
- 10+ languages routed per accent
- Automatic failover, no code changes
import { Speko } from "@speko/sdk";
const speko = new Speko({ apiKey: process.env.SPEKO_API_KEY });
// One call — best provider auto-routed, failover built in
const { text, provider, confidence } = await speko.transcribe(audio, {
language: "es-MX",
vertical: "healthcare",
});Benchmarks
The lowest error rate you can buy.
Word error rate across English and 10+ other languages. Lower is better. Speko routes per call, so every number is the best each provider can deliver — see the methodology.
26 datasets · 10+ languages · Apr 2026 · cited per-provider in the methodology
Use cases
Built for where accuracy is non-negotiable
Regulated verticals, multilingual markets, and anywhere a misheard word is a real liability.
Healthcare & patient intake
Medical transcription where a misheard dosage is a lawsuit. Speko benchmarks every provider on medical terminology — including accents — and routes each call to the one that scores best.
FAQ
Frequently asked questions
Everything you need to know about benchmarking, routing, and failover for voice AI.
Speko is voice AI reliability infrastructure. One API benchmarks 18+ voice providers against your real audio, routes every call to the best provider for that language and vertical, and fails over automatically when quality drops. Built for teams where a misheard word is a real liability.
Ship the voice AI that
doesn't mishear.
Bring us a sample of your real audio. We'll benchmark every provider against it and show you which one wins — in 30 minutes.