Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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ElevenLabs Flash v2.5 hits 75ms inference; Cartesia Sonic streams under 100ms. We tune chunk_length_schedule, sentence-boundary streaming, and TTFB to keep TTS under 200ms of the voice budget.
PJSIP 2.17 (April 2026) added explicit AI real-time speech connectivity support, async SIP authentication, and improved deadlock detection. For embedded AI voice on Linux, Android, RTOS, or microcontroller-class hardware, it is the obvious choice.
Technical guide to GPT-5.4's computer use capabilities for building AI agents that interact with desktop UIs, browser automation, and real-world application workflows.
Build an AI email assistant that reads your inbox, classifies urgency, drafts context-aware responses, and schedules sends using OpenAI Agents SDK and Gmail API.
How to design tool functions that LLMs can use effectively with clear naming, enum parameters, structured responses, informative error messages, and documentation.
Architectural comparison of multi-agent topologies including flat, hierarchical, and mesh designs with performance trade-offs, decision frameworks, and migration strategies.
Agent-specific prompt engineering techniques: crafting effective system prompts, writing clear tool descriptions for function calling, and few-shot examples that improve complex task performance.
Practical cost reduction strategies for AI agents including semantic caching, intelligent model routing, prompt optimization, and batch processing to cut LLM API spend.
DPO replaces the entire RLHF pipeline with a one-line classification loss — no reward model, no PPO, no instability. Both OpenAI and Azure now expose DPO endpoints. Here's how to layer it on top of SFT for tool-using agents.
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