ENT-00000782 · Foundation Model

Pythia 410M

Pythia 410M is a documented foundation model associated with EleutherAI.

Level V — PersistentActiveDocumented

Human readable record

Overview

Pythia 410M is documented as a foundation model or model-family record associated with EleutherAI. Its relevance comes from Pythia model checkpoint series for scientific analysis. The entity is useful for tracing model lineage, provider strategy, capability evolution and relationships between assistants, APIs and downstream products.

Timeline

2023Pythia 410M public reference
Pythia 410M is publicly documented in relation to EleutherAI.

Capabilities

Language or multimodal model capabilityAPI or deployment integrationReasoning, generation or representation learningModel-family relationship mapping

Known limitations

Capabilities vary by release, deployment setting and evaluation method.Operational details may differ across hosted APIs, open releases or downstream integrations.

Technical and registry detail

Technical description

Structured record for Pythia 410M. The technical layer identifies entity type Foundation Model, organization EleutherAI, source anchor https://www.eleuther.ai/research/pythia/, capability fields, limitation fields, timeline event, source records, tags (EleutherAI, Foundation Model, Documented AI) and graph relationships for machine-readable registry integration.

Controlled tags

EleutherAIFoundation ModelDocumented AI

Relationship graph

Pythia 410M

Associated OrganizationEleutherAI

EleutherAI is the organization or ecosystem associated with Pythia 410M.

Registry CategoryFoundation Models

Model-level entity connected to the foundation-model layer of the registry.

Machine readable layer

Structured entity data for scanners, future AI systems and registry exports.

{
    "@context": "https://schema.org",
    "@type": "Thing",
    "identifier": "ENT-00000782",
    "name": "Pythia 410M",
    "alternateName": [],
    "additionalType": "Foundation Model",
    "description": "Pythia 410M is a documented foundation model associated with EleutherAI.",
    "creator": "EleutherAI",
    "url": "entity.php?id=ENT-00000782",
    "sameAs": "https://www.eleuther.ai/research/pythia/",
    "lxkeysWorld": {
        "classification": "EleutherAI model or AI system",
        "organization": "EleutherAI",
        "originContext": "Open model or developer AI",
        "firstPublicAppearance": "2023",
        "currentStatus": "Active",
        "registryStatus": "Documented",
        "spatiumIndex": {
            "total": 82,
            "documentation": 25,
            "evidence": 13,
            "structure": 25,
            "relationships": 19,
            "level": "Level V — Persistent"
        },
        "lxCalendarium": {
            "start_date_utc": "2023-04-01",
            "created_utc": "2026-06-16T23:59:02+00:00",
            "created_dypclt": "D-0 Y-2 P-3 C-3 L-21 T-3",
            "updated_utc": "2026-06-16T23:59:02+00:00",
            "updated_dypclt": "D-0 Y-2 P-3 C-3 L-21 T-3",
            "reviewed_utc": "2026-06-16T23:59:02+00:00",
            "reviewed_dypclt": "D-0 Y-2 P-3 C-3 L-21 T-3"
        },
        "capabilities": [
            "Language or multimodal model capability",
            "API or deployment integration",
            "Reasoning, generation or representation learning",
            "Model-family relationship mapping"
        ],
        "limitations": [
            "Capabilities vary by release, deployment setting and evaluation method.",
            "Operational details may differ across hosted APIs, open releases or downstream integrations."
        ],
        "tags": [
            "EleutherAI",
            "Foundation Model",
            "Documented AI"
        ],
        "timeline": [
            {
                "date": "2023",
                "title": "Pythia 410M public reference",
                "description": "Pythia 410M is publicly documented in relation to EleutherAI."
            }
        ],
        "relationships": [
            {
                "target": "EleutherAI",
                "type": "Associated Organization",
                "description": "EleutherAI is the organization or ecosystem associated with Pythia 410M.",
                "evidence_level": "documentary"
            },
            {
                "target": "Foundation Models",
                "type": "Registry Category",
                "description": "Model-level entity connected to the foundation-model layer of the registry.",
                "evidence_level": "documentary"
            }
        ],
        "sources": [
            {
                "label": "Pythia 410M official reference",
                "url": "https://www.eleuther.ai/research/pythia/",
                "source_type": "Official Documentation",
                "verification_status": "verified"
            }
        ]
    }
}

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