Espressif Systems

ESP32-S3 extends the ESP32 family with dedicated vector extensions that accelerate neural network inference, enabling on-device keyword spotting and image classification for always-on audio and vision applications at ultra-low cost. USB-OTG support allows the chip to act as both a USB device and host, enabling USB keyboard/HID emulation and flash programming without a separate UART adapter. Espressif IDF 5.0 and Arduino-ESP32 support give developers a broad ecosystem of libraries and examples. AI Thinker and Seeed Studio offer production-ready modules built on ESP32-S3, making it the most cost-effective AI MCU in its class. 512 KB SRAM + 8 MB PSRAM comfortably fits TensorFlow Lite micro models and JPEG decode buffers.