GPT-Realtime-2 128K Context: What It Unlocks for Voice Agents
OpenAI's GPT-Realtime-2 quadruples voice context to 128K tokens. Here is exactly what the 32K-to-128K jump changes for production phone agents.
7 min read
Archive page 459 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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GPT-Realtime-Whisper vs Deepgram: Streaming STT in 2026
OpenAI's GPT-Realtime-Whisper launches at $0.017/min for streaming STT. Side-by-side latency, accuracy, and cost math vs Deepgram and the field.
7 min read
Claude Managed Agents Cookbook: Finance Workflow Patterns That Scale
Anthropic shipped finance cookbook patterns for Claude Managed Agents in May 2026. The long-running workflow patterns that matter and how to design them.
8 min read
Why Anthropic Restricted Mythos: The Dual-Use Calculus in 2026
Anthropic chose not to release Mythos publicly. Inside the dual-use cybersecurity calculus, what restricted release means for enterprises, and the ripple effects.
7 min read
ServiceNow AI Control Tower: Agent Governance for the Enterprise in 2026
AI Control Tower is the governance layer for ServiceNow's Project Arc — policy, monitoring, and audit logs for autonomous agents. Here is how it works.
7 min read
Voice Agent Ending the Call Gracefully (2026)
96% of well-designed agents close calls politely; the rest leave callers with the robotic-hangup feeling that undermines the whole flow. We map endCallPhrase tuning, silence-timeout policies, and CallSphere's vertical farewell library.
10 min read
Anthropic Microsoft 365 Integration: What Changes for Office Knowledge Workers
Anthropic announced full Microsoft 365 integration in May 2026. What the integration covers, what it means for Outlook, Word, Excel, and Teams users, and where the boundaries are.
7 min read
WebRTC Over QUIC and the Future of Realtime: Where Voice AI Goes After 2026
WebTransport is Baseline as of March 2026. Media Over QUIC ships in production within the year. Here is what changes for AI voice agents — and what stays the same.
11 min
Voice Agent TCO 2026: Build It Yourself vs Managed
Honest 24-month TCO breakdown for building your own voice agent on OpenAI/Anthropic APIs versus using a managed platform like CallSphere. With numbers.
8 min read
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