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Documentation Index

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Chat Completions

POST /v1/chat/completions
Generate text from a conversation. Supports streaming, vision, and structured output.

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Request

curl https://inference.dria.co/v1/chat/completions \
  -H "Authorization: Bearer dkn_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.5:9b",
    "messages": [
      {"role": "user", "content": "explain quantum computing in one sentence"}
    ]
  }'

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Parameters

FieldTypeRequiredDescription
modelstringyesModel ID (e.g., qwen3.5:9b)
messagesarrayyesConversation messages
max_tokensintegernoMax tokens to generate (default: 2048)
temperaturefloatnoSampling temperature (default: 0.7)
streambooleannoEnable SSE streaming (default: false)
timeout_secsintegernoTimeout in seconds (default: 120)
response_formatobjectnoStructured output schema

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Message format

Each message has a role and content: 
{"role": "system", "content": "You are a helpful assistant"}
{"role": "user", "content": "Hello"}
{"role": "assistant", "content": "Hi! How can I help?"}
{"role": "user", "content": "What is Rust?"}

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Vision (multimodal)

For vision models, content can be an array of parts: 
{
  "role": "user",
  "content": [
    {"type": "text", "text": "Describe this image"},
    {"type": "image_url", "image_url": {"url": "data:image/jpeg;base64,..."}}
  ]
}

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Structured output

Use response_format to get JSON conforming to a schema: 
{
  "model": "qwen3.5:9b",
  "messages": [{"role": "user", "content": "John Doe, john@example.com, 30"}],
  "response_format": {
    "type": "json_schema",
    "json_schema": {
      "name": "extract",
      "schema": {
        "type": "object",
        "properties": {
          "name": {"type": "string"},
          "email": {"type": "string"},
          "age": {"type": "integer"}
        },
        "required": ["name", "email", "age"]
      }
    }
  }
}

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Response

{
  "id": "gen-abc123",
  "model": "qwen3.5:9b",
  "choices": [
    {
      "message": {
        "content": "Quantum computing uses quantum bits..."
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 15,
    "completion_tokens": 42,
    "total_tokens": 57
  },
  "metadata": {
    "node_id": "node-xyz"
  }
}

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Streaming

Set "stream": true to receive Server-Sent Events: 
curl https://inference.dria.co/v1/chat/completions \
  -H "Authorization: Bearer dkn_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.5:9b",
    "messages": [{"role": "user", "content": "hello"}],
    "stream": true
  }'
Each event is a data: line with a JSON chunk: 
data: {"choices":[{"delta":{"content":"Hello"}}]}
data: {"choices":[{"delta":{"content":"!"}}]}
data: {"choices":[{"delta":{"content":" How"}}]}
data: [DONE]
The stream ends with data: [DONE].