DeepSeek: deepseek-flash

About deepseek-flash

DeepSeek V4.1 Flash, served through ChinaAPI's existing deepseek-flash model ID. Released on 2026-09-10, it is a native image-and-text 552B Mixture-of-Experts model with 8B parameters active during input prefill and 16B during output decoding, a 1M context window, and up to 384K output. It supports thinking and non-thinking modes, tool calling, JSON output, Responses API, and Anthropic-compatible access.

Quickstart

Copy-paste API request.

curl -X POST https://api.chinaapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $CHINAAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-flash",
    "messages": [
      {"role": "user", "content": "Summarize the main tradeoffs for this API workload."}
    ]
  }'

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["CHINAAPI_API_KEY"],
    base_url="https://api.chinaapi.ai/v1",
)

response = client.chat.completions.create(
    model="deepseek-flash",
    messages=[
        {"role": "user", "content": "Summarize the main tradeoffs for this API workload."}
    ],
)
print(response.choices[0].message.content)