{
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  "last_checked": "2026-11-06T17:32:20.691Z",
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        {
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          "subhead": "Advancing the frontier of AI systems with memory",
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          "evidence": "https://web.archive.org/web/20250104005254/https://www.letta.com/",
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        }
      ],
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    },
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      "variants": [
        {
          "headline": "Making machines that learn",
          "subhead": "The platform for stateful agents. Build AI agents with long-term memory, advanced reasoning, and custom tools using the Letta API and Agent Development Environment (ADE).",
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          "evidence": "https://web.archive.org/web/20260101164933/https://www.letta.com/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "Letta | Machines that learn",
          "subhead": "Making machines that learn. Create stateful agents that remember everything, learn continuously, and improve themselves over time.",
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          "evidence": "https://web.archive.org/web/20260705171021/https://www.letta.com/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "Letta | Machines that learn",
          "subhead": "Making machines that learn. Create stateful agents that remember everything, learn continuously, and improve themselves over time.",
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          "evidence": "https://www.letta.com/",
          "evidence_kind": "live_capture"
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      ],
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      "to": "2026-11-06T17:32:20.691Z",
      "captures": 3,
      "evidence": "https://www.letta.com/",
      "evidence_kind": "live_capture",
      "seen": {
        "between": {
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          "to": "2026-11-06T17:32:20.691Z"
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      "id": "page-dab4d56b47fd42f558e3a9300d1599e8ab900e639c0801ca74e9253944775218:c4cca3560b56ffaf5086be1be207464ec7e1a2ce60275574adbc4e8afbed7d58:headline:cd1713703fa955cd",
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      "before_evidence_kind": "internet_archive",
      "kind": "headline",
      "label": "Headline",
      "summary": "Changed its homepage headline from “Advancing the frontier of AI systems with memory” to “Making machines that learn”.",
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        "to": "2026-01-01T16:49:33.000Z"
      },
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      "before_evidence_kind": "internet_archive",
      "kind": "pricing",
      "label": "Pricing",
      "summary": "Added a pricing page.",
      "between": {
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        "to": "2026-01-01T16:49:33.000Z"
      },
      "evidence": "https://web.archive.org/web/20260101164933/https://www.letta.com/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-pricing-page"
    },
    {
      "n": 3,
      "id": "page-c4cca3560b56ffaf5086be1be207464ec7e1a2ce60275574adbc4e8afbed7d58:f173d974833e822ab31ed360efe881ecd8ab3a508d51b8ec64a443046dd15b01:pricing:d70781f7ab6fe2b9",
      "before_evidence": "https://web.archive.org/web/20260101164933/https://www.letta.com/",
      "before_evidence_kind": "internet_archive",
      "kind": "pricing",
      "label": "Pricing",
      "summary": "Removed its pricing page link.",
      "between": {
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        "to": "2026-07-05T17:10:21.000Z"
      },
      "evidence": "https://web.archive.org/web/20260705171021/https://www.letta.com/",
      "evidence_kind": "internet_archive",
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  "method": {
    "version": "messaging-v1",
    "description": "https://startuphistory.org/method"
  },
  "license": "CC-BY-4.0",
  "cite": "StartupHistory, “Letta” company record, https://startuphistory.org/c/letta.com"
}