News & Updates

UNO-Bench Released: One-Stop All-Modality Benchmark

The LongCat team announces UNO-Bench, a unified benchmark with strong Chinese support that evaluates single-modality and omni-modality intelligence in one framework. It reveals the Combination Law — weaker models show bottlenecks while stronger models achieve synergistic gains.

• 1,250 omni samples + 2,480 single-modality samples; 98% require cross-modal fusion
• Open-ended multi-step (MO) questions with weighted scoring; automatic scoring model reaches 95% accuracy
• Audio-visual decoupling and ablations to prevent shortcuts and enforce real fusion
• Cluster-guided sampling reduces compute by >90% with rank consistency

Combination Law (power-law): POmni ≈ 1.0332 · (PA × PV)^2.1918 + 0.2422

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November 2025 - LongCat-Flash-Omni Launch

First open-source real-time all-modality interaction model. Omni unifies text, image, audio, and video with a single end-to-end ScMoE backbone, achieving open-source SOTA on Omni-Bench and WorldSense.

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October 27, 2025 - LongCat-Video Launch

Introduction of the video generation model based on Diffusion Transformer architecture. Capable of generating 5-minute coherent videos at 720p/30fps, supporting text-to-video, image-to-video, and video continuation tasks.

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September 22, 2025 - LongCat-Flash-Thinking Release

Enhanced reasoning model focusing on agentic and formal reasoning capabilities. Features dual-path reasoning framework and DORA asynchronous training system. Achieves 64.5% token savings in tool-call scenarios.

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September 1, 2025 - LongCat-Flash-Chat Open Source

Meituan officially released the foundation dialogue model (MoE, 560B params) with strong throughput and competitive accuracy. Includes Zero-Computation Experts maintaining ~27B active params/token.

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