{
  "site": "Agentic Weekly",
  "dataset": "Agentic Weekly model facts",
  "as_of": "2026-10-26",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  },
  "attribution": "Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0",
  "page": "https://theagenticweekly.com/models",
  "evidence_labels": {
    "Reported": "Read from the cited vendor page on the as-of date; not run by us.",
    "Tested": "We ran it ourselves; scope is stated in tested_note. No model is Tested yet."
  },
  "model": {
    "slug": "glm-5-1",
    "name": "GLM-5.1",
    "vendor": "Z.ai",
    "family": "GLM",
    "category": "llm",
    "status": "generally-available",
    "groups": [
      "coding",
      "agents"
    ],
    "short_answer": "GLM-5.1 is a Z.ai language model released Apr 7, 2026; Z.ai's newest language model in our dataset is GLM-5.3-Flash. Z.ai's GLM-5.1, released Apr 7, 2026 and designed for long-horizon tasks of up to 8 hours in a single run. Verified against vendor sources on Oct 26, 2026.",
    "summary": "Z.ai's GLM-5.1, released Apr 7, 2026 and designed for long-horizon tasks of up to 8 hours in a single run.",
    "release_date": "2026-04-07",
    "latest_update": null,
    "api_id": null,
    "context_tokens": null,
    "max_output_tokens": null,
    "input_modalities": null,
    "output_modalities": null,
    "parameters": null,
    "license": null,
    "open_weights": null,
    "pricing": null,
    "evidence": "Reported",
    "tested_note": null,
    "last_verified": "2026-10-26",
    "is_stale": false,
    "facts": {
      "release_date": {
        "value": "2026-04-07",
        "source_url": "https://docs.z.ai/release-notes/new-released",
        "as_of": "2026-10-26",
        "evidence": "Reported"
      }
    },
    "vendor_claims": [],
    "notes": [],
    "not_verified": [
      "Context window, license and price were not captured."
    ],
    "sources": [
      {
        "label": "Z.ai release notes",
        "url": "https://docs.z.ai/release-notes/new-released"
      }
    ],
    "url": "https://theagenticweekly.com/models/glm-5-1",
    "markdown": "https://theagenticweekly.com/models/glm-5-1.md",
    "api": "https://theagenticweekly.com/api/models/glm-5-1"
  }
}