Build a Voice Agent with OpenAI Whisper + Llama 3.x via Ollama
Pure-Python voice agent: openai-whisper for STT, Ollama serving Llama 3.3 70B for the LLM, edge-tts for TTS. Zero API keys, runs on a single workstation.
11 min read
Archive page 827 of 1224
AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Ski Resorts: Handling Weather-Driven Booking Chaos With AI
Ski resorts face extreme weather-driven booking surges during powder storms. AI voice agents handle rebooking, cancellation, and lift ticket coordination instantly.
6 min read
Event Reminders and Change Requests Are Still Manual: Fix Them With Chat and Voice Agents
Event operations get noisy when every reminder, RSVP question, and schedule change needs a coordinator. Learn how AI chat and voice agents automate event communication.
11 min read
Beach Resorts: Seasonal Staffing Problems Solved With AI
Beach resorts struggle with seasonal staffing — impossible to hire 40 front desk agents for 10 weeks. AI voice agents scale instantly with zero seasonal hiring.
6 min read
Twilio Programmable Voice as a SIP Gateway for AI in 2026: The Default Production Pattern
Twilio in front, WebSocket bridge in the middle, OpenAI Realtime at the end. The pattern that dominates AI voice production in 2026 explained from SIP signaling through to model output.
11 min read
WebRTC for AR/VR Voice Avatars on Vision Pro and Quest in 2026
Vision Pro Personas and Meta Codec Avatars both ride WebRTC under the hood. Here is the architecture, the spatial-audio gotchas, and the 2026 build.
11 min
Connection Pool Warming for AI Voice Agents (2026)
TLS handshakes, WebSocket upgrades, and SIP registrations each cost 100-400ms cold. We design persistent connection pools to ASR, LLM, TTS, and CRM endpoints so the first turn pays nothing.
10 min read
Prompt Versioning + A/B Testing for Production Agents (2026)
Editing the prod system prompt at 2am is how you regress every agent silently. We share the 2026 prompt-lifecycle stack — extract from code, immutable IDs, champion/challenger A/B, eval gates — used to ship CallSphere's 37-agent fleet without rollbacks.
10 min read
14 Signs Your Hotel PMS Is Costing You More Than It Saves
If your hotel PMS can't answer the phone, route housekeeping, or talk to guests in Mandarin, you're paying more than you realize. Here are 14 warning signs.
6 min read
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