Every missed call is lost revenue. Pekci answers every call instantly, qualifies leads, books appointments, and keeps your business available 24/7—so your customers choose you instead of your competitors.
Calder is optimized for action-packed and energetic environments. He maintains high emotional range and fast responses suitable for interactive gaming and agentic roles.
[10:14:02.102] CONNECTING TO PEKCI REALTIME ENDPOINT... [10:14:02.215] INSTANCE CREATED: VOICE_MODEL_ID = "calder-v3" [10:14:02.220] DUPLEX_STREAM_OPENED [10:14:02.230] LATENCY: 98ms | SAMPLE_RATE: 24kHz [10:14:02.250] READY TO TRANSCRIBE / SYNTHESIZE
{
"route": "/*",
"rules": [
{
"condition": "query.intent == 'chat'",
"model": "pekci-lite-v4",
"fallback": "gpt-4o-mini"
}
]
}
Bring your virtual characters, NPCs, and AI companions to life with realistic, full-duplex conversational audio. Supports deep emotional states, personality styles, and contextual awareness.
Explore AI CompanionsOur state-of-the-art TTS engine transforms text into high-fidelity lifelike vocal audio with minimal latency, supporting dynamic emotion control and custom voice design features.
Natural intonation, lifelike breathing patterns, and high-fidelity 24kHz output.
Inject inline SSML tags to adjust speaking speed, pitch, emotion, and pauses dynamically.
Clone any voice using a short 10-second reference audio file with high accuracy.
Global support for localized accents, dialects, and multi-lingual voice matching.
Create completely custom voices simply by writing a text description of the persona.
First-byte latency under 120ms, perfectly suited for interactive streaming.
Everything you need to orchestrate voice-to-voice agents: STT, LLM orchestration, turn-taking, and TTS in a unified stream.
"What's the forecast for the launch tomorrow?"
"Looking good! Winds are under 10 knots, skies are clear, and we are go for launch."
Simultaneous bidirectional audio streaming so users can interrupt the agent naturally.
Advanced voice activity detection checks whether a user has finished speaking or just paused.
Trigger database queries or external API events directly during the voice conversation.
AI vocal intonation automatically updates based on the sentiment of the conversation.
Maintains state, memory, and past history of the dialogue across multiple active sessions.
Inject goals, knowledge bases, and behaviors to style the agent's logic flow.
The Pekci Router intercepts conversational intents and dynamically assigns them to the best-fit model (e.g. OpenAI GPT, Anthropic Claude, Meta Llama, or Pekci Lite) based on the target task.
{
"router": "user-aware-v1",
"strategies": {
"free_tier": "pekci-lite-v4",
"premium_tier": "gpt-4o-realtime",
"latency_sensitive": "pekci-direct-tts"
}
}
Our speech-to-text models are optimized for conversational speech, featuring rapid word alignment, semantic punctuation, and background noise cancellation.
Differentiate between background noise, speaker crosstalk, and targeted audio input.
Detect natural breathing and conversational pause intervals with high precision.
Align every transcribed word with millisecond accuracy for closed-captioning feeds.
We take safety and data privacy seriously. Our architecture complies with key security frameworks, ensuring your users' data remains isolated, encrypted, and compliant.
Get advanced conversation logic and low latency at a fraction of the cost.
| Feature | Pekci Voice Engine | ElevenLabs | Cartesia | OpenAI | Google Cloud |
|---|---|---|---|---|---|
| Sub-150ms Latency | ✓ (Under 120ms) | ✓ | ✓ | – | ✓ |
| Voice Design (Text-to-Voice) | ✓ | – | – | – | – |
| Inline SSML Tag Control | ✓ | – | ✓ | – | ✓ |
| User-Aware LLM Routing | ✓ | – | – | – | – |
| Cost per 1M characters | $1.50 | $15.00 | $10.00 | $15.00 | $4.00 |
Get started with 1 Million free characters. No credit card required. Deploy in minutes.