DeepSeek¶

Use the deepseek provider to call DeepSeek with an API key. Chat requests default to Chat Completions; Responses and Anthropic Messages are also available.

Get started¶

Install Republic using the quickstart, set REPUBLIC_DEEPSEEK_API_KEY, and replace MODEL_ID with a model available to your account:

import asyncio

import republic


async def main():
    model = republic.get_model("deepseek:MODEL_ID")
    response = await model.chat("Say hello in one sentence.")
    print(response.text)


asyncio.run(main())

Authentication¶

Republic reads REPUBLIC_DEEPSEEK_API_KEY when the provider is created and sends the key in the Authorization: Bearer header. You can pass a key loaded by your application as api_key=; see API-key authentication.

Model support¶

Chat requests send max_tokens, and reasoning_effort="none" turns thinking off. Thinking models return reasoning in response.reasoning. Republic sends reasoning_content back with earlier assistant messages, which these models require across tool calls; keep response.message in the conversation.

Select api_format="responses" or api_format="messages" to use another format. Messages requests go to DeepSeek's Anthropic-compatible endpoint, https://api.deepseek.com/anthropic, while api_base stays https://api.deepseek.com.

See configuration for endpoint overrides and request options.