Model configuration

Voice agents rely on AI models: LLM (understanding and responses), TTS (voice) and STT (speech transcription). By default they run on models managed by Brosbots.

Brosbots-managed models (default)

After signing up at app.brosbots.com your agents run on the platform-managed model stack right away - no configuration and no keys needed. Calls are billed from your balance at your plan’s per-minute rate.

Where models are configured

• Voice (TTS) and transcription (STT) are set per agent - in the agent editor, in the Voice and Transcription tabs. Each agent can speak with a different voice and have different speech recognition settings.
• Your own provider keys (BYOK) are added once for the whole organization in Account → Provider keys. Once a key is added, that provider becomes available in the selection lists in agents.

Your own providers (BYOK) - by plan

Plan	Models
Free	Brosbots-managed stack (no custom keys)
Pro	BYOK: your own OpenAI, Groq, Google, Deepgram keys
Business	All providers (incl. ElevenLabs, Cartesia and Soniox for voice, Soniox and Speechmatics for transcription) + custom voices
Enterprise	Custom terms and SLA

The following sections describe each model type in detail.