mimo-v2-flash

MiMo-V2-Flash is tuned for fast reasoning, coding, and agentic workflows rather than pure chat polish. Xiaomi describes it as a 309B-parameter MoE model with 15B active parameters and a hybrid attention design built to reduce serving cost while keeping long-context performance.

Support up to 256K context, with a native 32K pretraining length that was later extended.

Yes. In the post-training table, MiMo-V2-Flash scores 73.4 on SWE-Bench Verified, 71.7 on SWE-Bench Multilingual, and 38.5 on Terminal-Bench 2.0, which makes it a credible option for code assistants and agent loops.

Use MiMo-V2-Flash when you want a strong open-weight model with a smaller active compute footprint and good all-around reasoning plus agent performance. It is competitive with Kimi-K2 Thinking on MMLU-Pro and SWE-Bench, while DeepSeek-V3.2 Thinking is stronger on terminal-heavy tasks, so the better choice depends on whether you care more about efficiency or terminal depth.

Yes. The architecture uses sliding window attention to reduce long-sequence cost, and the repo reports very strong NIAH-Multi results even at 256K context. That makes it a sensible fit for long-document retrieval, summarization, and multi-hop context stitching.

It is optimized for inference efficiency, so speed and memory use still depend on batching, tensor parallelism, and the exact serving stack. A smaller runtime context can be a better production choice than the headline maximum if you need lower latency or lower memory use.

The vLLM recipe serves it from XiaomiMiMo/MiMo-V2-Flash with --trust-remote-code, --served-model-name mimo_v2_flash, and tensor parallelism tuned for your hardware. If you need agent-style tool calling, the recipe also shows parser options such as qwen3_xml and qwen3.