Xiaomi's MiMo Code: An open-source coding agent with a separate subagent for long-horizon memory

MiMo Code

Xiaomi released MiMo Code on GitHub, an open-source terminal coding agent built on OpenCode. It tackles long-horizon context limits by using a separate writer subagent that periodically writes structured checkpoints early, well before the context window fills up. When the window nears its limit, the system rebuilds working context from those checkpoints instead of relying on increasingly unreliable summarization. Background processes also extract reusable patterns from past sessions. The post does not disclose which model powers it, nor latency or cost figures.

Why it matters: Xiaomi open-sourced MiMo Code, using a writer sub-agent plus structured checkpoints to handle long-task context exhaustion—concrete mechanism, worth testing. Score stays below 85 because only the Product Hunt page is available so far; no benchmarks or community feedback yet, s...