API Reference

DeepSeek

DeepSeek models are efficient, reasoning-oriented chat models.

Models

Model	Code	Notes
DeepSeek V4.1 Flash	deepseek-v4.1-flash	Latest; new-architecture Flash model, 1M context, vision input.
DeepSeek V4 Pro 0813	deepseek-v4-pro-0813	Official release superseding the V4 Pro preview build.
DeepSeek V4 Flash (0731)	deepseek-v4-flash-0731	Fast and economical.
DeepSeek V4 Pro	deepseek-v4-pro	High capability.

Capabilities

• tools, tool_choice
• temperature, top_p, max_tokens, response_format

See Parameter Support by Model for the full matrix.

Example

from openai import OpenAI

client = OpenAI(base_url="https://llm.siraya.ai/v1", api_key="<API_KEY>")
resp = client.chat.completions.create(
    model="deepseek-v4-pro",
    messages=[{"role": "user", "content": "Solve: 12 * 13."}],
)
print(resp.choices[0].message.content)