DeepSeek via Anthropic SDK

DeepSeek models are accessible through OpenModel's Messages protocol (/v1/messages), which means you use the Anthropic SDK to call them. The setup is identical to using Anthropic — just change the model name.

This guide also applies to the other Messages protocol providers: DashScope (Alibaba Cloud) and Xiaomi (MiMo). They all work through the same endpoint with the same SDK.

Available Models

See Available Models for the full list.

Installation

Install the Anthropic SDK — the same SDK used for Anthropic models:

pip install anthropic

Configuration

import anthropic

client = anthropic.Anthropic(
    base_url="https://api.openmodel.ai",
    api_key="om-your-api-key",
)

The configuration is exactly the same as the Anthropic SDK page. Refer to that page for environment variable setup and additional configuration options.

Examples

Basic Message

import anthropic

client = anthropic.Anthropic(
    base_url="https://api.openmodel.ai",
    api_key="om-your-api-key",
)

message = client.messages.create(
    model="deepseek-v4-flash",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Explain how a neural network learns."}
    ],
)
print(message.content[0].text)

Streaming

import anthropic

client = anthropic.Anthropic(
    base_url="https://api.openmodel.ai",
    api_key="om-your-api-key",
)

with client.messages.stream(
    model="deepseek-v4-flash",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Write a short story about a robot learning to paint."}
    ],
) as stream:
    for text in stream.text_stream:
        print(text, end="", flush=True)
print()

Using Other Providers

To switch between providers, just change the model parameter. The rest of the code stays the same:

# DashScope
message = client.messages.create(model="qwen3-max", max_tokens=1024, messages=[...])

# Xiaomi
message = client.messages.create(model="mimo-v2.5-pro", max_tokens=1024, messages=[...])

Compatibility Notes

All Messages protocol providers support the core messaging features: text messages, multi-turn conversations, streaming, and system prompts. However, advanced features like tool use and vision may vary by provider. Check the API Reference for the full compatibility details.

Next Steps

• Anthropic SDK — Full SDK reference with advanced examples (tool use, async, etc.)
• Streaming — Real-time streaming responses
• Available Models — Browse all supported providers and models