> ## Documentation Index > Fetch the complete documentation index at: https://docs.capriole.ai/llms.txt > Use this file to discover all available pages before exploring further. # Chat > モデルからテキスト応答を作成します。 このエンドポイントを使って、モデルにプレーン テキストを送り、プレーン テキストの応答を受け取ります。この Capriole ネイティブ ルートは非ストリーミングです。クライアントが SSE ストリームを必要とする場合は、Chat Completions、Responses、または Messages を使ってください。 `POST /v1/chat` は `openai-latest`、`claude-latest`、`google-latest`、および `GET /v1/models` が返す公開の具体的なモデル ID を受け付けます。対応プロバイダーの推奨旗艦モデルを Capriole AI に選ばせるには、latest エイリアスを使ってください。バージョン固定が重要な場合は、具体的なモデル ID を使ってください。 Capriole AI のウェブチャットと公開 API は、別々の製品サーフェスです。ウェブチャットでは、Fable 5 と Fable 5 Thinking が主な Anthropic モードであり、Opus 5 と Opus 5 Thinking は **Other Models** に表示されます。公開 API は、ウェブチャットの thinking プリセットを独立したモデル ID として公開しません。Claude の Chat API リクエストでは、`claude-latest`、または `anthropic/claude-fable-5`、`anthropic/claude-opus-5`、`anthropic/claude-sonnet-4-6` などの公開の具体的な Claude モデル ID を使ってください。既存の Opus 4.8、Opus 4.7、Opus 4.6 統合は引き続きサポートされます。 ## OpenAPI ````yaml api-reference/openapi.json POST /v1/chat openapi: 3.1.0 info: title: Capriole AI API description: >- Public API for model discovery, text chat, and protocol-compatible model endpoints. version: 1.0.0 servers: - url: https://api.caprioletech.com security: [] paths: /v1/chat: post: summary: Create chat response description: Creates a text response from a model. operationId: createChat requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ChatRequest' examples: text: value: model: openai-latest input: Hello World! responses: '200': description: Chat completion response content: application/json: schema: $ref: '#/components/schemas/ChatResponse' examples: default: value: id: 49da8eb7-916b-43a3-ab02-442bc2841839 model: openai/gpt-5.6-terra result: text: Here is a short joke. usage: input_tokens: 8 output_tokens: 6 total_tokens: 14 cached_tokens: 0 charged_tokens: 14 '400': $ref: '#/components/responses/ValidationOrDetailErrorResponse' '401': $ref: '#/components/responses/DetailErrorResponse' '403': $ref: '#/components/responses/DetailErrorResponse' '429': $ref: '#/components/responses/RateLimitErrorResponse' '500': $ref: '#/components/responses/InternalServerErrorResponse' '502': $ref: '#/components/responses/DetailErrorResponse' security: - bearerAuth: [] components: schemas: ChatRequest: type: object additionalProperties: false required: - model - input properties: model: type: string description: Public model identifier or latest alias returned by GET /v1/models enum: - openai-latest - openai/gpt-5.6-terra - openai/gpt-5.6-luna - openai/gpt-5.5 - openai/gpt-5.4-mini - claude-latest - anthropic/claude-fable-5 - anthropic/claude-opus-5 - anthropic/claude-opus-4-8 - anthropic/claude-opus-4-7 - anthropic/claude-opus-4-6 - anthropic/claude-sonnet-4-6 - google-latest - google/gemini-3.1-pro-preview - google/gemini-3.5-flash - xai/grok-4.5 - zai/glm-5.2 - moonshot/kimi-k3 input: type: string description: Plain text user input web_search: type: boolean default: true description: >- Enable provider-native web search when the selected model supports it. temperature: type: number minimum: 0 description: Optional sampling temperature. max_output_tokens: type: integer exclusiveMinimum: 0 description: Optional maximum number of output tokens. max_retries: type: integer minimum: 0 description: Optional maximum number of provider retries. timeout: type: number exclusiveMinimum: 0 description: Optional provider request timeout in seconds. ChatResponse: type: object required: - id - model - result - usage properties: id: type: string model: type: string result: $ref: '#/components/schemas/ChatResult' usage: $ref: '#/components/schemas/ChatUsage' ChatResult: type: object required: - text properties: text: type: string description: Plain text assistant result ChatUsage: type: object required: - input_tokens - output_tokens - total_tokens - cached_tokens - charged_tokens properties: input_tokens: type: integer output_tokens: type: integer total_tokens: type: integer cached_tokens: type: integer description: Provider-reported cached input tokens. charged_tokens: type: integer description: Quota tokens charged after cached input discount. ValidationError: type: object required: - detail - errors properties: detail: type: string description: Validation summary errors: type: array items: type: string description: Per-field validation errors DetailError: type: object required: - detail properties: detail: type: string description: Error detail from the API responses: ValidationOrDetailErrorResponse: description: Validation error or request-level error response content: application/json: schema: oneOf: - $ref: '#/components/schemas/ValidationError' - $ref: '#/components/schemas/DetailError' examples: invalidPayload: value: detail: Invalid input parameters received. errors: - >- Field 'body -> input': String should have at least 1 character DetailErrorResponse: description: Error response with a detail message content: application/json: schema: $ref: '#/components/schemas/DetailError' examples: missingBearerToken: value: detail: Missing Bearer token invalidApiKey: value: detail: Invalid API key usageMetadataUnavailable: value: detail: Missing usage metadata RateLimitErrorResponse: description: Rate limit error response content: application/json: schema: $ref: '#/components/schemas/DetailError' examples: rateLimitExceeded: value: detail: 'Rate limit exceeded: 100 per 1 minute' InternalServerErrorResponse: description: Internal server error response content: application/json: schema: $ref: '#/components/schemas/DetailError' examples: internalServerError: value: detail: An internal server error occurred. Please try again later. securitySchemes: bearerAuth: type: http scheme: bearer description: >- Use an API key created in the Capriole AI page. Send it as `Authorization: Bearer sk-...`. ````