LongCat 2.5 Preview Free

LongCat 2.5 Preview Free sits in Meituan's longcat family as a multimodal reasoning model oriented toward coding and agent-driven tasks, combining text and image understanding to interpret visual context alongside written instructions. Its very large context budget suits long-running agent sessions, multi-file code analysis, and extended conversations where the model must keep substantial prior material in working memory, while a generous output ceiling allows it to return detailed, multi-step responses in a single pass. The combination of reasoning, tool calling, and temperature control makes it well suited to autonomous pipelines that need to plan, invoke external functions, and adjust generation style on the fly.

Within the longcat lineup, this preview release functions as a forward-looking checkpoint that explores Meituan's direction for integrated vision-language reasoning at scale, rather than a finished flagship, and the "free" designation indicates availability at no listed monetary cost through the hosting channels. In practice it is a good fit for developers experimenting with coding assistants, tool-using agents, and multimodal workflows that benefit from very long context and image grounding, while teams needing the deepest possible reasoning reliability may want to validate its outputs against their own evaluations before production deployment.