MiroThinker-1.7: SOTA Open-Source Research Agent — 74.0 BrowseComp, 256K Context, 300 Tool Calls

GitHub / MiroMindAI·medium signal

MiroMindAI released MiroThinker-1.7 in March 2026, achieving 74.0 on BrowseComp (MiroThinker-H1 variant: 88.2) — current SOTA for open-source research agents. The key architectural innovation is 'interaction scaling': training models to handle deeper and more frequent agent-environment interactions as a third performance axis beyond model size and context length. MiroThinker-1.7-mini (30B params) scores 72.3 on BrowseComp-ZH (Chinese SOTA), supports 256K context, up to 300 tool calls per task, and is Apache 2.0 with a companion MiroFlow agent framework.