{
  "authoritativeSource": true,
  "lastUpdated": "2026-05-08",
  "models": [
    {
      "id": "cassandra-t1",
      "name": "Cassandra T1",
      "type": "Masked-diffusion language model",
      "status": "Open release · proof of concept",
      "license": "Apache-2.0",
      "pageUrl": "https://sophiaxt.com/models/cassandra",
      "repoUrl": "https://github.com/Chorozion/Casandra-t1-diffusion-edge-model",
      "readmeUrl": "https://github.com/Chorozion/Casandra-t1-diffusion-edge-model#readme",
      "position": "Real, open-released SOPHIA XT prototype. The repository ships a verified epoch-5 FP16 checkpoint, the tokenizer, the PyTorch architecture, training utilities, and a Flask chat-completion server. Output quality still requires more training and structured evaluation before production use.",
      "verifiedArchitecture": {
        "vocabulary": 32768,
        "hiddenSize": 2048,
        "transformerLayers": 28,
        "queryHeads": 16,
        "kvHeads": 4,
        "ffnIntermediateSize": 5632,
        "positionEncoding": "RoPE",
        "normalization": "RMSNorm",
        "feedForward": "SwiGLU",
        "maskTokenId": 32766,
        "padTokenId": 32767,
        "defaultDenoiseSteps": 12
      },
      "verifiedTrainingLoss": {
        "epoch1": 3.78,
        "epoch2": 2.89,
        "epoch3": 2.67,
        "epoch4": 2.42,
        "epoch5": 2.2561
      },
      "verifiedArtifacts": [
        {
          "name": "weights/cassandra_ep5_fp16.pt",
          "parts": 2,
          "reassembledBytes": 2659500664,
          "sha256": "D70C813C513F5232A25313FA60338F862020BA942ED26D54F62511766FA5F044",
          "role": "Verified epoch-5 FP16 checkpoint (most stable artifact in the release)."
        },
        {
          "name": "weights/v2_scratch_epoch2_82002.pt",
          "parts": 9,
          "reassembledBytes": 16665974950,
          "sha256": "8BFB5644209AB8FD241D85A725781495B29922811A2BECF8260AAAAD0A26DA6F",
          "role": "Newer v2 scratch checkpoint at step 82,002. Included for transparency; coherence is currently worse than epoch 5."
        },
        {
          "name": "release/tokenizer.json",
          "parts": 1,
          "reassembledBytes": 2253607,
          "sha256": "376A9537FCE79B7004237845E6B2C9991661E6BAEEA0B76AF9C9A3C1EB405C4D",
          "role": "Cassandra tokenizer used by the released scripts."
        }
      ],
      "benchmarksPublished": false,
      "benchmarksNote": "SOPHIA XT does not publish benchmark numbers it has not measured publicly. The repo includes a captured 10-prompt qualitative coherence comparison (eval/v2-ep2-vs-t1-ep5-coherence-raw.txt). It does NOT include MMLU, HumanEval, GSM8K or similar standard-suite results.",
      "limitations": [
        "Not production-ready.",
        "Long-form generation is unstable.",
        "No formal public benchmark suite is included yet.",
        "Training datasets are excluded for safety and licensing reasons.",
        "No quantized GGUF artifact yet (custom architecture not supported by standard GGUF conversion path).",
        "Inference scripts retain dev-machine path assumptions."
      ],
      "quickstart": [
        "cat weights/cassandra_ep5_fp16.pt.part00? > cassandra_ep5_fp16.pt",
        "sha256sum -c weights/checksums.sha256",
        "python scripts/run_cassandra.py --checkpoint cassandra_ep5_fp16.pt --tokenizer release/tokenizer.json --denoise-steps 12",
        "python scripts/serve_ep5.py --port 8080"
      ]
    },
    {
      "id": "q3m",
      "name": "Q3M (Mercury-compatible)",
      "type": "Inference layer used by SOPHIA XT tools",
      "status": "Integrated via Inception Labs API",
      "pageUrl": "https://sophiaxt.com/models",
      "position": "Q3M is the Mercury-compatible inference layer used by SOPHIA XT tools (Lead Leak Scanner, DiagBuddy, LTMi-XT crystallizer). It is integrated through Inception Labs' API. SOPHIA XT does not claim to have trained the Q3M base model."
    },
    {
      "id": "ltmi-xt",
      "name": "LTMi-XT — Layered Topological Memory Indexing",
      "type": "Knowledge crystallization + lattice retrieval architecture",
      "status": "Open release · v0.1",
      "license": "Apache-2.0",
      "pageUrl": "https://sophiaxt.com/research/ltmi-xt",
      "demoUrl": "https://sophiaxt.com/tools/ltmi-xt",
      "repoUrl": "https://github.com/Chorozion/LTMi-XT",
      "position": "LTMi-XT is an open document-crystallization and lattice-indexed retrieval architecture from SOPHIA XT. It crystallizes messy documentation into self-contained atomic statements (loci), places each on a 64³ topological lattice keyed by hierarchical breadcrumb, tags each with chronological horizon and decay, and emits an open .ltmi artifact suitable for both retrieval and fine-tune ingestion.",
      "verifiedArchitecture": {
        "latticeShape": "64³ cube",
        "breadcrumbDepth": 4,
        "coordinateDerivation": "Hash-derived (BLAKE2b-128 over breadcrumb prefix levels)",
        "fileFormat": ".ltmi (JSONL)",
        "identifierScheme": "Content-addressed (BLAKE2b-128 of canonical JSON)",
        "memoryHorizons": [
          "short",
          "long"
        ],
        "decayHalfLifeDays": 7,
        "consolidationThreshold": 3
      },
      "benchmarksPublished": false,
      "benchmarksNote": "v0.1 publishes the architecture and methodology only. SOPHIA XT does not publish benchmark numbers it has not measured publicly. Evaluation plan is in the paper.",
      "apiEndpoints": [
        "POST https://sophiaxt.com/api/ltmi-xt/crystallize",
        "POST https://sophiaxt.com/api/ltmi-xt/retrieve"
      ]
    }
  ]
}