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Together AI Chat API

The Chat API from Together AI — 1 operation(s) for chat.

Together AI Chat API is one of 28 APIs that Together AI publishes on the APIs.io network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification.

Tagged areas include Chat. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and an AsyncAPI specification.

This API exposes 1 operation across 1 path, and defines 30 schemas. It is described by OpenAPI 3.2.0, at version 2.0.0.

Requests are made against a single base URL, https://api.together.ai/v1.

1 operations 1 paths 30 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0.0
Base URL
https://api.together.ai/v1
Authentication
HTTP Bearer
License
Terms of Service
Resource Areas
1

Authentication & Security 1

Together AI Chat API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Chat 1
POST
/chat/completions
Create chat completion
chat-completions body → 200400401404429503504

Schemas 30

The contract defines 30 schemas that model the data the API accepts and returns. The most detailed are ChatCompletionRequest (27 properties), ChatCompletionResponse (8 properties), ChatCompletionChunk (8 properties), ChatCompletionMessage (5 properties). Each schema is shown below with its type and property counts.

ResponseFormatJsonObject
object
JSON object response format. An older method of generating JSON responses. Using jsonschema is recommended for models that support it. Note that the model will…
1 property 1 required
ChatCompletionResponse
object
8 properties 6 required
ChatCompletionChunk
object
8 properties 5 required
ChatCompletionAssistantMessageParam
object
5 properties 1 required
ChatCompletionRequest
object
27 properties 2 required
ChatCompletionUserMessageContent
The content of the message, which can either be a simple string or a structured format.
ChatCompletionMessage
object
5 properties 2 required
ChatCompletionUserMessageContentMultimodal
array
A structured message with mixed content types.
InferenceWarning
object
1 property 1 required
ChatCompletionEvent
object
1 property 1 required
ChatCompletionChoicesData
array
ToolsPart
object
2 properties
ResponseFormatJsonSchema
object
JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](https://docs.together.ai/docs/json-mode).
2 properties 2 required
FinishReason
string
LogprobsPart
object
4 properties
ChatCompletionUserMessageContentString
string
A plain text message.
ToolChoice
object
4 properties 4 required
TopLogprobs
object
Top log probabilities for the tokens.
ResponseFormatText
object
Default response format. Used to generate text responses.
1 property 1 required
StreamSentinel
object
1 property 1 required
ChatCompletionFunctionMessageParam
object
3 properties 3 required
PromptPart
array
ChatCompletionSystemMessageParam
object
3 properties 2 required
ChatCompletionUserMessageParam
object
3 properties 2 required
ResponseFormatJsonSchemaSchema
object
The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/).
ChatCompletionToolMessageParam
object
4 properties 3 required
ChatCompletionMessageParam
ErrorData
object
1 property 1 required
ChatCompletionStream
UsageData
object
3 properties 3 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

together-ai-chat-api-openapi.yml Raw ↑

Other APIs Together AI publishes across the network.

Together AI Audio API
Together AI Batches API
Together AI Code Interpreter API
Together AI Completion API
Together AI Compute API
Together AI Deployments API
Together AI DeploymentsStorage API
Together AI DeploymentsVolumes API
Together AI Embeddings API
Together AI Endpoints API
Together AI evaluation API
Together AI Files API
Where this information came from

This is an independent, third-party profile of Together AI Chat API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

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