Live voice provider marketplace (preview)
You'll pick the voice behind your agents — by price, latency, and quality, not by vendor lock-in. This preview shows the provider marketplace exactly as customers will see it: compare profiles in the table below, then talk to the live agent. The four mocked profiles are deterministic offline simulations, shown as reference rows — nothing on this page calls them. The realtime call below is real: it sends your audio or text to our voice service, which relays it to the named provider.
Every voice provider, one comparison table
The same adapter interface sits under every provider, so swapping vendors never touches your agent's core loop. Four mocked profiles are simulated reference rows; stage-2 adapters for OpenAI and Google are installed and measured (below), with three more providers declared.
| Provider | Architecture | Quality tier | Latency budget | Cost (per min) | Status |
|---|
Mock costs are simulated estimates from public list prices. OpenAI and Google rows show MEASURED latencies from our 2026-08-25–27 bake-offs (non-streaming calls incl. connection setup; streaming architectures land lower). Real adapters fire only when their API key is set server-side — one pay-per-use call per request at list price.
Realtime voice call demo
This is the actual product surface, not a simulation. Click Start call, allow the microphone, and speak — a real agent answers in real time, transcribes both sides of the conversation live, and you can interrupt it mid-sentence just by talking. Prefer typing? Use the text box inside the demo. Speech in and out is handled by our voice service.
Before you start: this call is not local. Your microphone audio streams to our voice service (voice.nexusagentworks.com) and on to the third-party speech provider handling that turn. We do not store the audio or the transcript; what each provider retains is governed by that provider’s own terms.
The microphone permission is scoped to this demo only — audio is streamed to our voice service for the conversation and is not stored by us. The demo also runs standalone at voice.nexusagentworks.com.
One adapter interface, any provider
This preview is wired to the same provider-pluggable layer that will power real deployments — a single interface every voice vendor adapter must satisfy.
Cascade or speech-to-speech
Cascade providers expose transcription plus synthesis; level-3 S2S providers expose a streaming session instead. Your agent loop depends on the interface, never on a vendor SDK.
Keys stay server-side, always
Provider API keys are held as server-side secrets and read only inside our voice service. The browser sees provider names and a configured flag — never a key value. Unconfigured providers answer with a clear error naming the missing variable.
Latency as a first-class metric
Every profile publishes its latency budget next to its price, because response gaps over about a second read as robotic. When real adapters land in stage 2, the marketplace table becomes the bake-off scoreboard.
Deterministic offline mocks today
The runnable profiles are pure functions — same input, same output, no network. That makes the whole surface testable end-to-end before a single dollar of API spend is committed.
Common questions
Do I need API keys to use this preview?
No. The realtime call runs on our provider keys, server-side; you never supply one, and there is no sign-up and no purchase. The mocked rows in the table are simulated reference profiles and call nothing.
Is my text or audio sent anywhere?
Only when you use the realtime call. The comparison table is static — it sends nothing. The realtime call above does leave your machine — microphone audio, or the text you type into the demo, goes to our voice service and on to that provider to be answered. We do not store either; provider retention follows the provider’s terms.
Are the prices and latencies real quotes?
No — every figure is labeled a simulated estimate. Costs come from public list prices gathered in our market scan and latencies are planning budgets; both exist so you can reason about trade-offs before stage 2 runs measured benchmarks.
When can I hear real voices?
Installed for OpenAI (gpt-4o-mini-tts + Whisper) and Google (Gemini TTS + Flash ASR) — thin adapters behind the same interface, latency-measured in our 2026-08-25–27 bake-offs. Cartesia, ElevenLabs, and Deepgram are declared in the registry awaiting their adapters; invoking an unkeyed provider fails loudly rather than making a surprise network call.
Want this marketplace behind your phone lines?
Watch the full agent workforce run in the interactive demo, then see what a managed deployment costs. All figures are simulated estimates.