AgentKit Guardrails: How to Ship Safely on OpenAI's New Stack
A practical guide to AgentKit 1.0's guardrails system — content filters, PII scrubbing, schema validation, and how to design fallback paths for production.
9 min read
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AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Industrial humanoid ROI modeling — when does a $50K humanoid pay back
With Figure 02, Apollo, Digit, and Phoenix 7 all in priced pilots by April 2026, finance teams finally have enough data to model humanoid payback rigorously.
6 min read
Shield AI Hivemind 2 software update for autonomous swarms
Shield AI shipped Hivemind 2.0 in April 2026, adding a new MCP-style command interface for multi-platform swarms across V-BAT, Nova, and partner airframes.
6 min read
Skydio X10D defense update — DIU contract growth in April 2026
Skydio's X10D earned a Defense Innovation Unit production contract expansion in April 2026, pushing the Blue UAS-listed drone's military deployment past 8,000 units.
6 min read
Surgical robotics + AI agents — what intuitive and others shipped in
Intuitive Surgical, Vicarious, and Asensus all touted AI agent integrations in their April 2026 updates, with task-aware overlays now standard in da Vinci 5.
6 min read
Salon Voice AI in Los Angeles: CallSphere Salon vs Mindbody 2026
Los Angeles salons piloted CallSphere salon (4 OpenAI Agents SDK specialists) against Mindbody's voice add-on in April 2026. No-show drop, rebooking lift, and per-chair ROI.
8 min read
Apollo.io AI Sequences 2026: SMB Outbound at Scale
Apollo.io's AI sequences became the SMB outbound default in 2026 with strong pricing and broad data. Here's the product, the per-seat pricing.
10 min read
AppFolio Realm-X AI Agent Property Management 2026
AppFolio's Realm-X AI agent now serves 35,000+ property management companies in 2026. We profile the product, the per-unit pricing, the leasing and maintenance workflows.
9 min read
California Law Firms and AI Agents: 2026 Deployment Snapshot
California state bar issued AI guidance in March 2026. Here's how Los Angeles and SF firms responded with agent deployments, vendor selections.
11 min read
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