II.
Capability JSON
Structured · livecapability:supports-structured-output
Supports structured output json
Inspect the normalized record payload exactly as the atlas UI reads it.
{
"id": "capability:supports-structured-output",
"_kind": "Capability",
"_file": "capabilities/capabilities/missing-universal-capabilities.yaml",
"_cluster": "capabilities",
"attributes": {
"displayName": "Supports structured output",
"description": "The provider enforces a JSON-Schema (or grammar / regex) on model\noutput. Anthropic: `response_format: { type: json_schema, ... }`.\nOpenAI: `response_format: { type: json_schema, schema, strict }`.\nGoogle: `responseMimeType: application/json` with\n`responseSchema`.\n",
"appliesToNodeKinds": [
"ModelVersion",
"Provider"
],
"category": "structured-output"
},
"outgoingEdges": [],
"incomingEdges": [
{
"from": "model:gemini-2-0-flash-lite@current",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=2.0.0 <2.1.0",
"level": "full",
"evidenceSourceIds": [
"evidence:google-gemini-image-models-issue-534"
]
}
},
{
"from": "model:gemini-2-5-flash-lite@current",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=2.5.0 <2.6.0",
"level": "full",
"evidenceSourceIds": [
"evidence:google-gemini-image-models-issue-534"
]
}
},
{
"from": "model:gemini-3-pro-image@current",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=3.0.0 <3.2.0",
"level": "full",
"evidenceSourceIds": [
"evidence:google-gemini-image-models-issue-534"
]
}
},
{
"from": "model:gpt-5.3-codex@current",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=5.3.0 <5.4.0",
"level": "full",
"evidenceSourceIds": [
"evidence:openai-gpt-5-3-codex-model-doc-2026-05"
]
}
},
{
"from": "model:grok-4-3@current",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=4.3.0 <4.4.0",
"level": "full"
}
},
{
"from": "provider:anthropic",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=2024-06-01",
"level": "full",
"notes": "Anthropic supports tool-use schema-constrained output; native response_format json_schema is partial (via tool-use idiom)."
}
},
{
"from": "provider:azure-openai",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=2024-08-01",
"level": "full",
"notes": "Structured output via json_schema response_format with strict=true."
}
},
{
"from": "provider:openai",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=2024-08-01",
"level": "full",
"notes": "response_format json_schema with strict=true introduced in 2024-08."
}
},
{
"from": "provider:xai",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=0.0.0",
"level": "full",
"notes": "Grok 4.3 model docs list structured outputs as supported."
}
},
{
"from": "provider-version:xai-ge-0-0-0",
"to": "capability:supports-structured-output",
"kind": "supports",
"attributes": {
"versionRange": ">=0.0.0",
"level": "full",
"notes": "xai"
}
}
]
}