DeepSeek-V4-Flash-0731

DeepSeek V4 Flash 0731 版: 高效轻量化 MoE, 百万上下文, 高并发低延迟, 推理能力强

Model ID: deepseek-v4-flash-0731 · Type: chat · Provider: DeepSeek

Endpoints: /v1/chat/completions · /v1/messages

Pricing

Capabilities

• thinking
• reasoning

from openai import OpenAI

client = OpenAI(api_key="sk-...", base_url="https://api.router.ai/v1")
resp = client.chat.completions.create(
    model="deepseek-v4-flash-0731",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

FAQ

How much does DeepSeek-V4-Flash-0731 cost on J8API?

DeepSeek-V4-Flash-0731 (`deepseek-v4-flash-0731`) is billed per usage at $0.14/1M in · $0.28/1M out, in USD. Current pricing is always listed at https://j8api.com/models/deepseek-v4-flash-0731.

How do I call DeepSeek-V4-Flash-0731 through J8API?

Send a request to https://api.router.ai/v1/v1/chat/completions with the header `Authorization: Bearer <your API key>` and `"model": "deepseek-v4-flash-0731"`. The API is OpenAI-compatible, so any OpenAI SDK works by changing base_url to https://api.router.ai/v1 — no other code change.

Which endpoints does DeepSeek-V4-Flash-0731 support?

DeepSeek-V4-Flash-0731 can be called on: /v1/chat/completions; /v1/messages.

What is DeepSeek-V4-Flash-0731's context window?

DeepSeek-V4-Flash-0731 accepts up to 1,000,000 input tokens and can return up to 393,216 output tokens. Requests exceeding the input limit are rejected before reaching the model.

What can DeepSeek-V4-Flash-0731 do?

DeepSeek-V4-Flash-0731 supports: prompt_caching, thinking, reasoning.

Who makes DeepSeek-V4-Flash-0731?

DeepSeek-V4-Flash-0731 is a chat model from DeepSeek, available through the J8API gateway with the same API key as every other model.

Call it through the J8API OpenAI-compatible endpoint (API base: https://api.router.ai/v1). AI agents can discover and call every model on this gateway through MCP (https://mcp.router.ai/mcp) with no manual integration.

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