curl -X POST \
  -H "Authorization: Bearer <api_key>" \
  -H "Content-Type: application/json" \
  -d '{"model": "c1-embed-latest", "stream": true, "messages": [{"role": "user", "content": "Hello, world!"}]}' \
  https://api.thesys.dev/v1/embed/chat/completions

  id: 1
  data: {"id":"chatcmpl-1743157601318-pzx9ougakm","object":"chat.completion.chunk","created":1743157601,"model":"c1-embed-latest","choices":[{"index":0,"delta":{"role":"assistant","content":{...}}]}

  id: 2
  data: {"id":"chatcmpl-1743157601318-pzx9ougakm","object":"chat.completion.chunk","created":1743157601,"model":"c1-embed-latest","choices":[{"index":0,"delta":{"content":{...}}]}

Streaming message chunks are returned by the API when stream=true is set in the request.

​
Request Headers

​
Authorization
string
required

The API key to use for the request.

​
Content-Type
string
required

The content type of the request. Should be application/json.

​
Request Body

​
messages
array
required

An array of messages of the conversation so far.

​
model
string
required

The model to use for the UI completion. Should be one of the models listed in the Models page.

​
temperature
number

The temperature to use for the UI completion. Should be between 0 and 1.

​
top_p
number

The top-p value to use for the UI completion. Should be between 0 and 1.

​
max_tokens
integer

The maximum number of tokens to use for the UI completion.

​
n
integer

The number of completions to generate.

​
stop
integer

Should be unset or set to 1.

​
stream
boolean

Whether to stream the response. Should be true for streaming.

All other request parameters are ignored.

curl -X POST \
  -H "Authorization: Bearer <api_key>" \
  -H "Content-Type: application/json" \
  -d '{"model": "c1-embed-latest", "stream": true, "messages": [{"role": "user", "content": "Hello, world!"}]}' \
  https://api.thesys.dev/v1/embed/chat/completions

  id: 1
  data: {"id":"chatcmpl-1743157601318-pzx9ougakm","object":"chat.completion.chunk","created":1743157601,"model":"c1-embed-latest","choices":[{"index":0,"delta":{"role":"assistant","content":{...}}]}

  id: 2
  data: {"id":"chatcmpl-1743157601318-pzx9ougakm","object":"chat.completion.chunk","created":1743157601,"model":"c1-embed-latest","choices":[{"index":0,"delta":{"content":{...}}]}

​
SSE Event Stream

​
id
string

A identifier for this event.

​
data
object

One of the following objects:

​
Completion Chunk

​
id
string
required

A unique identifier for the UI completion. Will be the same in all events for a given completion.

​
object
string
required

The object type, which is always chat.completion.chunk

​
created
integer
required

Timestamp for when the chunk was created.

​
model
string
required

The model used to generate the UI completion.

​
usage
object

An object containing the usage statistics for the UI completion Only present if the generation is complete.

​
choices
array

An array of completions. Will always contain exactly one object.