telli
Every customer call, handled by AI.
Key strengths
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telli is a model-agnostic AI voice agent platform built for B2C brands and enterprise teams running inbound and outbound call operations. Its architecture supports multiple LLM/model providers, giving engineering teams flexibility to swap or combine underlying models without rebuilding agent logic. Core infrastructure features include SIP trunking with bring-your-own-number (BYON) support, parallel call scaling for high-volume workloads, real-time CRM sync (Salesforce, HubSpot), calendar integration, and a REST API for programmatic control. Voice cloning and a library of natural voices are available for brand-consistent audio output. Live monitoring and analytics surfaces call-level telemetry for observability. telli is headquartered in Germany.