LongCat-2.5-Preview
Preview of Meituan's agent-focused long-horizon model, closed API for now.
About
LongCat-2.5-Preview is Meituan's September 25, 2026 preview release repositioning the LongCat line around autonomous agents: long-horizon task execution, tool use, and multi-step planning across terminals, browsers, desktop software, spreadsheets, and design tools. It adds native multimodal input to LongCat-2.0's profile.
Vendor site metadata reports roughly 1.6 trillion total parameters with about 48B active per token, a 1M-token context, and up to 128k output tokens, with OpenAI and Anthropic compatible interfaces plus integrations for Codex, OpenCode, OpenClaw, and CatPaw. As of mid-October 2026 there is no public weight release, no model card, no technical report, and no published benchmark table; treat the scale figures as vendor-reported metadata and expect the profile to change at general availability.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 103; Trending score 84/100 from researcher assessment.