Insights from the team

Explaining Acoustic Echo Cancellation from the NLMS algorithm to real-world deployment in the browser (AEC3) and on ESP32 (ESP-ADF). Includes a comparison of AEC support across OpenAI, Gemini Live, and xAI Grok.

How we integrated OpenAI, Anthropic, Google, xAI, DeepSeek, and Xiaomi through native SDKs — letting users switch models mid-conversation, saving up to 90% on input-token costs with prompt caching, and deploying with zero downtime.

How we built a retrieval-augmented generation pipeline handling PDF, DOCX, and web URLs with chunking, embedding, and cosine search — reaching 91% accuracy compared to 34% with a plain LLM.

Why we dropped WebSocket for hardware devices and moved to MQTT + UDP — cutting latency from 380ms to 165ms, RAM from 45KB to 12KB, and gaining 40% battery life.