ENT-00000783 · Foundation Model

Pythia 1B

Pythia 1B is a documented foundation model associated with EleutherAI.

Level V — PersistentActiveDocumented

Human readable record

Overview

Pythia 1B is documented as a foundation model or model-family record associated with EleutherAI. Its relevance comes from Pythia language model for research on model scaling and training. The entity is useful for tracing model lineage, provider strategy, capability evolution and relationships between assistants, APIs and downstream products.

Timeline

2023Pythia 1B public reference
Pythia 1B 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 1B. 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 1B

Associated OrganizationEleutherAI

EleutherAI is the organization or ecosystem associated with Pythia 1B.

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-00000783",
    "name": "Pythia 1B",
    "alternateName": [],
    "additionalType": "Foundation Model",
    "description": "Pythia 1B is a documented foundation model associated with EleutherAI.",
    "creator": "EleutherAI",
    "url": "entity.php?id=ENT-00000783",
    "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 1B public reference",
                "description": "Pythia 1B is publicly documented in relation to EleutherAI."
            }
        ],
        "relationships": [
            {
                "target": "EleutherAI",
                "type": "Associated Organization",
                "description": "EleutherAI is the organization or ecosystem associated with Pythia 1B.",
                "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 1B official reference",
                "url": "https://www.eleuther.ai/research/pythia/",
                "source_type": "Official Documentation",
                "verification_status": "verified"
            }
        ]
    }
}

Proof and discussion layer

Contribute to this record

Submit a proof, correction or comment. Public display is moderated. Every submission remains preserved in the export archive.

Submit proof or comment

Approved comments

No approved public comment yet.