Xiaomi MiMo V2 Pro Benchmarks Leaked

🔑 Enhanced Key Takeaways

• •MiMo-V2-Flash, a related model in Xiaomi's lineup released in February 2026, is a Mixture-of-Experts (MoE) architecture with 309B total parameters and 15B active parameters[3].
• •MiMo-V2-Flash achieves top rankings among open-source models on AIME 2025 math competition and GPQA-Diamond scientific benchmark[3].
• •The model supports infinite context windows and delivers inference speeds up to 150 tokens per second at a cost of $0.1 per million input tokens[3][2].

🛠️ Technical Deep Dive

• •MiMo-V2-Flash uses a hybrid attention mechanism with a 1:5 ratio of Global Attention (GA) and Sliding Window Attention (SWA), featuring an aggressive 128-token sliding window for efficiency[3].
• •Includes a lightweight Multi-Token Prediction (MTP) block with a dense FFN and SWA, achieving 2.0–2.6× speedup and accepted lengths of 2.8–3.6 tokens[3].
• •Demonstrates near 100% long-context retrieval success from 32K to 256K tokens and robust performance on GSM-Infinite benchmark up to 128K[5].
• •Benchmark scores include 83.5% on GPQA, 33.5 coding index, and 67.7% on AIME 2025[2].

🔮 Future ImplicationsAI analysis grounded in cited sources

⏳ Timeline