Meituan describes LongCat 2.5 Preview as a natively multimodal model for long-horizon tasks across terminals, browsers, GUIs, spreadsheets, and design tools. The announcement reports 1.6T total parameters (about 48B active) and a 1M-token context window.
LongCat 2.0 is Meituan's current LongCat generation model, replacing the earlier LongCat 2.0 Preview provider model ID for general text generation.
LongCat 2.0 Preview was Meituan's beta LongCat generation model and was replaced by the stable LongCat 2.0 provider model ID on June 29, 2026.
LongCat Flash Chat was a legacy language model from Meituan for chat, writing, analysis, and general-purpose automation. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.
LongCat Flash Chat 2602 Exp was an experimental legacy Meituan LongCat chat model snapshot. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.
LongCat Flash Lite was a legacy Meituan LongCat model. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.
LongCat Flash Omni 2603 was a legacy Meituan LongCat model snapshot. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.
LongCat Flash Thinking was a legacy Meituan LongCat reasoning model. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.
LongCat Flash Thinking 2601 was a legacy Meituan LongCat reasoning model snapshot. Meituan retired this legacy model on May 29, 2026 as part of its migration toward LongCat 2.0 Preview.