AsyncAPI channel · DeepSeek · DeepSeek Streaming API (HTTP + SSE)

/beta/completions

Server-Sent Events stream of `text_completion` chunks produced by `POST /beta/completions` (the Fill-In-the-Middle completions endpoint) when `stream` is `true`. Each event is a partial completion chunk following the OpenAI legacy completions streaming shape. The stream is closed by a literal `data: [DONE]` event.

Open source AsyncAPI → All DeepSeek channels DeepSeek provider profile
Provider: DeepSeek AsyncAPI: v2.6.0 Spec: DeepSeek Streaming API (HTTP + SSE) Operations: 1 Messages: 2

Channel address

/beta/completions

Operations

subscribeFimCompletionStream
Receive streaming FIM (Fill-In-the-Middle) completion chunks.

Messages

FimCompletionChunk
A single streaming chunk emitted on the SSE stream while a `/beta/completions` (Fill-In-the-Middle) request with `stream=true` is in progress.
Content-Type: application/json
StreamDone
Sentinel event marking the end of the SSE stream. The raw SSE line is `data: [DONE]`. After this event the server closes the response body.
Content-Type: text/plain

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

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