Simantic launches cloud firmware simulator for AI agents

Simantic, founded by former firmware engineers who previously worked at Neuralink and Tesla, is building a simulation layer so engineers and AI agents can validate firmware without hardware. Its products include virtual devboards that can be programmed and run with a single API call from a terminal, an AI code reviewer that uses the simulator as its verification engine, and a CI/CD pipeline that tests firmware against a simulated microcontroller on every commit.

The company says its first prototype wrapped Renode, but it moved to an engine written from scratch in Rust after finding Renode slow, hard to change quickly, and not accurate enough for timing-sensitive work. Simantic says it focuses on accuracy and runs hardware validation rigs around the clock, with devboards connected to a Saleae Logic MSO and an SWD bus, to find gaps between its models and real hardware.

The cloud simulator is available now, and developer plan licenses include a native binary for running firmware locally. Listed microcontroller support covers some STM32F0, F4 and H7 models, ESP32-S3 and ESP32-C3, and RP2040, with more models planned weekly.

Agents that write firmware can now compile, run and check their code against a simulated microcontroller in seconds, instead of waiting for someone to flash a physical board.

Teams should confirm their specific chip is supported before relying on the simulator, since the founders say the full model list is not yet published in the docs and coverage is still growing.