Voice Pipeline

Voice AI that feels
instantaneous.

Sub-300ms time to first audio. STT → LLM → TTS running co-located on a single edge node. No cloud round trips. No dead air. The fastest voice AI infrastructure available.

Try it free →Read the docs

Why TTFA matters

Your users don't experience tokens per second.

They experience the wait. The pause before the voice agent speaks. The gap that tells them they're talking to a machine.

Sub-300ms TTFA is the threshold where AI voice feels real. PolarGrid achieves it by running the entire pipeline — STT, LLM, and TTS — co-located on a single edge GPU node, eliminating every cross-datacenter hop.

Time to First Audio

sub-300ms

End-of-speech → first audio byte · Measured in production

STT

~80ms

Whisper turbo

→

LLM

~60ms

Llama 3.1 8B

→

TTS

~63ms

Kokoro 82M

Pipeline options

Ready-to-use voice agents.

PersonaPlex

End-to-end · $0.07/min

Single WebSocket connection handles the full STT → LLM → TTS pipeline. Set a persona prompt, connect, and start talking. Ideal for voice agents and copilots.

  • ✓Single WebSocket API
  • ✓Persona-driven conversations
  • ✓Built-in VAD (voice activity detection)
  • ✓Streaming audio in both directions
Read the docs →

Modular Pipeline Agent

Custom · Beta

Chain any STT, LLM, and TTS models from the PolarGrid catalog. Full event stream with per-turn latency markers. For teams that need control over every step.

  • ✓Mix and match any models
  • ✓Per-turn event stream (transcripts, tokens, latency)
  • ✓Interrupt handling built-in
  • ✓Production-grade telemetry
Read the docs →

Who uses it

Built for real-time AI products.

Voice Agents

The pause kills the conversation.

Sub-300ms TTFA is the threshold where AI voice feels real. PolarGrid is the only infrastructure built for that bar.

Interview Copilots

Real-time transcription. Instant response.

Final Round AI runs their interview copilot on PolarGrid. Latency-sensitive, high-volume, real-time. Exactly what we're built for.

Customer Service AI

Scale without the lag tax.

High-volume voice pipelines degrade at scale. PolarGrid's edge routing keeps latency low — consumption pricing, no minimums.

Hear the difference.

$500 free credits. No card required. Experience sub-300ms voice pipelines yourself.

Start free →Talk to our team