Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
From the blog
BM25 alone hits 65% recall@10. Dense alone hits 78%. The hybrid pipeline pushes 91% — and once you bolt on a reranker the gap widens. Here is how CallSphere wires hybrid retrieval into a voice loop with a 200ms budget.
End-to-end GitHub Actions workflow for an OpenAI Realtime + LiveKit voice agent: matrix build, eval gate, cosign + SLSA provenance, and a kubectl rollout to k3s. Real YAML included.
Top white-label voice AI agencies pull 70-90% gross margin and $20-40K monthly profit on a $499 average client. Here is the agency model, the resale stack, and the math behind it.
Open Dental and Dentrix run 60% of independent US practices but ship no native chat. Here is how 2026 chat agents bolt onto their APIs to cut no-shows by 30% and recapture missed-call revenue at $290 per appointment.
Three billing models, three failure modes. We compare per-minute ($0.07–0.45), per-call ($0.33–2.00), and per-conversation ($1.00–2.00) pricing with real math on a 5,000-call month and a CallSphere-tier comparison.
The first five seconds of an AI call decide whether the caller stays on the line. Cathy Pearl's earcons, Google CDS cooperative principle, and the exact greeting template CallSphere ships across 6 verticals.
Article 50 transparency obligations took force in February 2025 and bite harder in 2026. Here is what voice AI builders must disclose to callers, when emotion recognition triggers extra duties, and how CallSphere ships the controls out of the box.
One routing brain, many narrow workers. Why supervisor-and-specialists wins in production over decentralized swarms — with LangGraph code, OneRoof's 10-agent topology, and the failure modes nobody warns you about.
A working pgvector quickstart for AI agents — install the extension, design a hybrid table, build an HNSW index, and query top-k matches from Prisma and Python. Real schema, real code, no marketing fluff.
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