Replace Retell With LiveKit Cloud + OpenAI Realtime
Retell's flow builder is great for SMB. When you need real WebRTC, video frames and SFU control, LiveKit Cloud + Realtime is the right move. Full code path.
Agentic AI, LLM engineering, and the models behind modern automation — multi-agent systems, LLM evaluation and comparisons, RAG, fine-tuning, AI infrastructure, security, and production AI engineering.
From the blog
Retell's flow builder is great for SMB. When you need real WebRTC, video frames and SFU control, LiveKit Cloud + Realtime is the right move. Full code path.
AI identifies upsell opportunities during support interactions, boosting expansion revenue by 14 percent. Here is how to wire usage context into a chat agent without making buyers feel sold to.
SIPSorcery 10.0.6 plus SIPSorcery.OpenAI.WebRTC give .NET developers a clean path from a SIP trunk to OpenAI Realtime in pure C#. The AGPL classes were removed in January 2026, so commercial use is finally clean.
The 2026 NPRM names network segmentation explicitly. Here is how a HIPAA-aligned AI voice platform segments call workers, ASR, LLM gateways, and EHR connectors with zero-trust micro-segmentation.
GitHub MCP added pre-commit secret scanning in March 2026. We unpack the official server, the PR-creating loop, and how CallSphere uses it for internal code review.
PII can span chunk boundaries, break with format variation, and tank LLM context. We cover a two-stage redactor (regex + LLM contextual) that buffers 2–3 chunks, hits 99%+ recall, and never lets PII reach analytics.
TCR brand registration, campaign use case, EIN aged 15+ days, opt-in URL live and carrier-verifiable - 10DLC in 2026 is more strict than ever. Here is the exact submit-once-clear-once playbook for AI SMS deployments.
Footwear D2C return rates run 30 to 35 percent — almost entirely fit-driven. Chat agents that know last shape, width, and sport-use case cut returns 25% and lift conversion 33%. Here is the 2026 playbook.
Call Detail Records are the cheapest, oldest, and most underused signal in voice AI. Joined to LLM traces and STT confidence they tell you why a campaign is converting at 8% instead of 12%. Here is the schema and the queries we ship.