{
  "slug": "lfm2-5-1-2b",
  "order": 74,
  "name": "LFM2.5 (1.2B)",
  "baseTitle": "LFM2.5 1.2B",
  "company": "Liquid AI",
  "country": "United States",
  "flag": "🇺🇸",
  "date": "2026-05-28",
  "decoderType": "Dense hybrid",
  "attention": "LIV convolution blocks plus GQA",
  "layerMix": "10 LIV conv + 6 GQA",
  "scale": "1.2B parameters",
  "totalParams": 1200000000,
  "activeParams": 1200000000,
  "context": "128,000",
  "contextTokens": 128000,
  "license": "LFM Open License v1.0",
  "kvCacheText": "12 KiB",
  "kvCacheKiB": 12,
  "kvCacheLevel": "Very low",
  "summary": "Liquid AI's 1.2B LFM2.5 model keeps the 16-layer hybrid LIV convolution and GQA stack at a wider hidden size.",
  "keyDetail": "Keeps the 16-layer LFM2.5 hybrid stack but doubles the hidden size to 2048 and uses 32 query heads.",
  "image": {
    "full": "https://sebastianraschka.com/llm-architecture-gallery/images/architectures/lfm2-5-1-2b.webp",
    "thumb": "https://sebastianraschka.com/llm-architecture-gallery/images/architectures/thumbnails/lfm2-5-1-2b.webp",
    "alt": "Figure 1: LFM2.5 1.2B",
    "width": 830,
    "height": 960
  },
  "articleUrl": null,
  "links": [
    {
      "label": "config.json",
      "href": "https://huggingface.co/LiquidAI/LFM2.5-1.2B-Thinking/blob/main/config.json",
      "title": "LiquidAI/LFM2.5-1.2B-Thinking"
    },
    {
      "label": "License",
      "href": "https://huggingface.co/LiquidAI/LFM2.5-1.2B-Thinking/blob/main/LICENSE",
      "title": null
    },
    {
      "label": "Tech report",
      "href": "https://www.liquid.ai/blog/lfm2-5-1-2b-thinking-on-device-reasoning-under-1gb",
      "title": null
    }
  ],
  "concepts": [
    {
      "slug": "gqa",
      "label": "GQA",
      "name": "Grouped-Query Attention",
      "url": "https://llm-atlas-7or.pages.dev/concepts/gqa/"
    }
  ],
  "aai": {
    "v4": {
      "label": "AA Intelligence Index v4.3.2",
      "total": 5.2,
      "profile": {
        "Scientific": 3.1
      },
      "url": "https://artificialanalysis.ai/models/lfm2-5-1-2b-thinking"
    }
  },
  "sourceUrl": "https://sebastianraschka.com/llm-architecture-gallery/#card-lfm2-5-1-2b",
  "family": "hybrid",
  "url": "https://llm-atlas-7or.pages.dev/models/lfm2-5-1-2b/",
  "markdownUrl": "https://llm-atlas-7or.pages.dev/models/lfm2-5-1-2b.md"
}