Provider Nodes

Provider nodes supply AI services to your flow. Every flow requires one LLM provider, one TTS provider, and one STT provider.

LLM Providers

The LLM powers conversational intelligence — understanding caller intent, generating responses, and evaluating transitions.

Azure OpenAI

For organizations using Azure-hosted OpenAI models. Requires your Azure endpoint URL.

Setting	Description
Endpoint	Your Azure OpenAI endpoint URL (required)
Model	Deployed model name
Temperature	0.0-2.0

LLM configuration

Setting	Description
Model	Select the specific model
Temperature	Response randomness. Range: 0–2. Lower = more deterministic.
Max tokens	Maximum tokens per response
Priority tier	2x pricing for faster inference and higher availability

TTS Providers

The TTS provider converts agent text responses into spoken audio.

ElevenLabs

ElevenLabs settings

Setting	Range	Description
Voice	—	Select from premade, cloned, generated, or professional voices
Stability	0.0–1.0	Voice consistency. Higher = more stable, lower = more expressive.
Similarity	0.0–1.0	How closely output matches the original voice sample
Style	0.0–1.0	Style variation.
Speaker boost	on/off	Enhances clarity and presence.
Speed	0.7–1.2	Playback speed.

Cartesia

Cartesia settings

Setting	Range	Description
Voice	—	Select from voice library. Supports masculine, feminine, and gender-neutral.
Emotion	54 options	`sonic-3` only. See emotion list below.
Speed	0.6–1.5	Playback speed. Default: 1.0.
Volume	0.5–2.0	Output volume. Default: 1.0.

Positive — Neutral, Happy, Excited, Enthusiastic, Elated, Euphoric, Triumphant, Amazed, Surprised, Flirtatious, Curious, Content, Peaceful, Serene, Calm, Grateful, Affectionate, Trust, Sympathetic, Anticipation, Mysterious, Proud, Confident

Negative — Angry, Mad, Outraged, Frustrated, Agitated, Threatened, Disgusted, Contempt, Envious, Sarcastic, Ironic, Sad, Dejected, Melancholic, Disappointed, Hurt, Guilty, Bored, Tired, Rejected, Nostalgic, Wistful, Apologetic, Hesitant, Insecure, Confused, Resigned, Anxious, Panicked, Alarmed, Scared

Other — Distant, Skeptical, Contemplative, Determined