Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Pause-and-resume recording is no longer enough. PCI DSS 4.0.1 has been mandatory since March 2025, and DTMF suppression is the only architecture that keeps an AI voice agent out of full PCI scope.
Typing indicators within 200–500ms cut abandonment by up to 40%. Here is how 2026 chat agents stream tokens, mask latency, and keep users from refreshing.
Real LLM and RAG interview questions from top AI labs in 2026. Covers fine-tuning vs RAG decisions, production RAG pipelines, evaluation, PEFT methods, positional embeddings, and safety guardrails with expert answers.
The Filesystem MCP is the most-installed MCP in the world because it ships with Claude Desktop. We cover sandboxing, path restrictions, AIO Sandbox, and the patterns that keep agents on a leash.
Pion is the Go-native WebRTC library inside LiveKit, ion-sfu, and CallSphere's own gateway. Here is why Pion became the AI-voice plumbing of choice in 2026.
WebCodecs gives voice AI builders frame-level access to encoders. Hardware-accelerated Opus at 16 kbps runs on the browser GPU/NPU, freeing the main thread and matching native SDK quality.
Properly segmented win-back programs recover 15-30% of churned customers but email open rates top out at 29%. Here is how a win-back chat with usage memory does what an email sequence cannot.
Annual prepay typically saves 15–20% but locks in a model price that's depreciating ~50%/year. We model the breakeven, the 'price-drop hedge' clause, and when monthly is the smarter move.
Warby Parker killed home try-on in favor of AI-powered virtual try-on and an AI virtual adviser. Here is how eyewear D2C chat agents combine AR, prescription parsing, and frame match in 2026.
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