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.
13 min read
Archive page 871 of 1230
AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
11,066 articlesArchive page 871
From the blog
Latest articles
Voice AI for Physical Therapy: Eval Booking and Insurance Auth in 2026
PT initial evals usually do not need prior auth, but 2026 carriers are pushing prior-authorization-lite for continuing visits. Front desks are burning 4 hours a day on auth calls. Here is how voice AI offloads it without delaying patients.
9 min read
Chat for Upgrade and Upsell with Usage Context: How AI Drives 14% Expansion in 2026
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.
10 min read
SIPSorcery for .NET AI Voice Agents in 2026: SIP, WebRTC, and OpenAI
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.
10 min read
Flutter flutter_webrtc + AI Voice Agents (2026): Production Stack
flutter_webrtc is the dominant cross-platform Flutter WebRTC plugin in 2026. Here is how AI voice agent apps build it with callkeep, FCM/PushKit, and pipecat_flutter.
11 min
Network Segmentation and Zero Trust for AI Call Workers Under HIPAA 2026
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.
11 min read
mcp-github 2026: Code-Modifying Agents, Secret Scanning, and the PR Workflow
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.
11 min read
ROI of a Multilingual AI Receptionist: 57+ Languages, One Bill
Bilingual answering services charge $50-100/month extra and add $600-1,200/year in hidden costs. CallSphere covers 57+ languages at no add-on. Here is the revenue captured from multilingual coverage and the math vs human bilingual receptionists.
10 min read
Renewal-Window Chat: Showing Customers Their Own Usage Before They Decide
Healthy SaaS targets 90%+ GRR and 110-120% NRR with expansion. Here is how to run a renewal-window chat that surfaces usage data, value delivered, and expansion paths in the 60 days before the contract decision.
11 min read
Subscribe to our newsletter
Get notified when we publish new articles on AI voice agents, automation, and industry insights. No spam, unsubscribe anytime.
Ready to see AI voice agents in action?
Try our live demo -- no signup required. Talk to an AI voice agent right now.