> ## Documentation Index > Fetch the complete documentation index at: https://docs.deepinfra.com/llms.txt > Use this file to discover all available pages before exploring further. # Anthropic Messages ## OpenAPI ````yaml https://api.deepinfra.com/openapi.json post /anthropic/v1/messages openapi: 3.1.0 info: title: DeepInfra API description: >- The DeepInfra API provides serverless AI inference, custom model deployments, and GPU rentals. version: 1.0.0 servers: - url: https://api.deepinfra.com security: [] tags: - name: Chat Completions description: OpenAI and Anthropic-compatible chat completion endpoints for LLMs. - name: Text Completions description: OpenAI-compatible text completion endpoints. - name: Embeddings description: Generate text embeddings for search and RAG. - name: Image Generation description: Generate, edit, and create variations of images. - name: Audio description: OpenAI-compatible speech synthesis, transcription, and translation. - name: Text to Speech description: ElevenLabs-compatible TTS endpoints and voice management. - name: Inference description: Native DeepInfra inference API for models and deployments. - name: Dedicated Models description: Deploy and manage private model instances with autoscaling. - name: GPU Rentals description: Rent dedicated GPU containers. - name: Models description: Browse, search, and manage AI models. - name: Files & Batches description: File uploads and batch processing. - name: LoRA Adapters description: Create, manage, and query LoRA adapter models. - name: Agents description: Manage agent-framework instances (OpenClaw and friends). - name: Sandboxes description: Create and manage isolated sandbox environments. - name: Account description: User profile, team management, rate limits, and GPU pool limits. - name: Authentication description: API tokens, SSH keys, scoped JWTs, and login flows. - name: Billing description: Payment methods, usage tracking, and billing. - name: Logs & Metrics description: Query inference logs, deployment logs, and usage metrics. - name: Utilities description: Feedback submission and CLI version. paths: /anthropic/v1/messages: post: tags: - Chat Completions summary: Anthropic Messages operationId: anthropic_messages_anthropic_v1_messages_post parameters: - name: anthropic-version in: header required: false schema: anyOf: - type: string - type: 'null' title: Anthropic-Version - name: anthropic-beta in: header required: false schema: anyOf: - type: string - type: 'null' title: Anthropic-Beta - name: x-deepinfra-source in: header required: false schema: anyOf: - type: string - type: 'null' title: X-Deepinfra-Source - name: x-deepinfra-service-tier in: header required: false schema: anyOf: - type: string - type: 'null' description: >- Per-request service tier (`priority` or `flex`) for clients that cannot set the `service_tier` body field. The body field wins when both are present; unrecognized values ride the default tier. title: X-Deepinfra-Service-Tier description: >- Per-request service tier (`priority` or `flex`) for clients that cannot set the `service_tier` body field. The body field wins when both are present; unrecognized values ride the default tier. - name: xi-api-key in: header required: false schema: anyOf: - type: string - type: 'null' title: Xi-Api-Key - name: x-api-key in: header required: false schema: anyOf: - type: string - type: 'null' title: X-Api-Key requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/AnthropicMessagesIn' responses: '200': description: Successful Response content: application/json: schema: {} '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' security: - HTTPBearer: [] components: schemas: AnthropicMessagesIn: properties: service_tier: anyOf: - $ref: '#/components/schemas/ServiceTier' - type: 'null' description: >- The service tier used for processing the request. 'priority' processes the request with higher priority (premium rate); 'flex' processes it at lower priority for a discount, served only when spare capacity exists and may be retried/timed out under load. Both apply only to models that support the respective tier. For compatibility, 'auto' is treated as 'priority' and 'standard_only' as 'default'. fail_fast: type: boolean title: Fail Fast description: >- If true, the request is rejected immediately with HTTP 429 when the model has no spare capacity, instead of waiting in the queue. Opt-in; the default (false) keeps standard queueing behavior. default: false models: anyOf: - items: type: string type: array maxItems: 4 minItems: 1 - type: 'null' title: Models description: >- Ordered list of up to 4 fallback models. The request is attempted on each model in order: when a model rejects it for lack of capacity (HTTP 429 model-busy / flex no-capacity), the next model is tried server-side. The first model that accepts serves the request; the response's model field and billing reflect that model, at that model's pricing. Models before the last are attempted without queueing (as if fail_fast were set); the last model honors the request's own fail_fast value. When models is set, the model field is ignored. Entries must be plain model names (no deploy_id:, custom_hostport, or :revision specifiers); duplicate entries are ignored, keeping the first occurrence. model: type: string title: Model max_tokens: anyOf: - type: integer - type: 'null' title: Max Tokens messages: items: additionalProperties: true type: object type: array title: Messages system: anyOf: - type: string - items: $ref: '#/components/schemas/AnthropicSystemContent' type: array - type: 'null' title: System stop_sequences: anyOf: - items: type: string type: array - type: 'null' title: Stop Sequences stream: anyOf: - type: boolean - type: 'null' title: Stream default: false temperature: anyOf: - type: number - type: 'null' title: Temperature default: 1 top_p: anyOf: - type: number - type: 'null' title: Top P top_k: anyOf: - type: integer - type: 'null' title: Top K metadata: anyOf: - additionalProperties: true type: object - type: 'null' title: Metadata tools: anyOf: - items: $ref: '#/components/schemas/AnthropicTool' type: array - type: 'null' title: Tools tool_choice: anyOf: - additionalProperties: true type: object - type: 'null' title: Tool Choice thinking: anyOf: - $ref: '#/components/schemas/AnthropicThinkingConfig' - type: 'null' prompt_cache_key: anyOf: - type: string - type: 'null' title: Prompt Cache Key type: object required: - model - messages title: AnthropicMessagesIn HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ServiceTier: type: string enum: - default - priority - flex title: ServiceTier AnthropicSystemContent: properties: type: type: string const: text title: Type text: type: string title: Text type: object required: - type - text title: AnthropicSystemContent AnthropicTool: properties: name: type: string title: Name description: anyOf: - type: string - type: 'null' title: Description input_schema: additionalProperties: true type: object title: Input Schema type: object required: - name - input_schema title: AnthropicTool AnthropicThinkingConfig: properties: type: anyOf: - type: string enum: - enabled - disabled - adaptive - type: 'null' title: Type budget_tokens: anyOf: - type: integer - type: 'null' title: Budget Tokens enabled: anyOf: - type: boolean - type: 'null' title: Enabled type: object title: AnthropicThinkingConfig description: >- Anthropic `thinking` config: {type: enabled|disabled|adaptive, budget_tokens}. `enabled` is a legacy pre-spec field this endpoint used to accept; it only applies when `type` is absent. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError securitySchemes: HTTPBearer: type: http scheme: bearer ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.