DeepSeek V4: Future-Ready Reasoning for Teams
DeepSeek-V4 is now available through chat.deepseek.com, the DeepSeek app, and the DeepSeek API. The current API lineup includes DeepSeek-V4-Pro and DeepSeek-V4-Flash with 1M context support and OpenAI/Anthropic-compatible endpoints.
Community Demo
Try a live DeepSeek V4 community demo here, and use chat.deepseek.com, platform.deepseek.com, or the DeepSeek API docs when you need the official product surfaces.
What is DeepSeek V4?
DeepSeek-V4 is an officially released preview family announced by DeepSeek in April 2026. The release includes two API models, DeepSeek-V4-Pro and DeepSeek-V4-Flash.
DeepSeek documents two current API model names: deepseek-v4-pro and deepseek-v4-flash. The older aliases deepseek-chat and deepseek-reasoner still work for compatibility today, but the public docs mark them for deprecation on July 24, 2026.
Both V4-Pro and V4-Flash are listed with 1M context length, a maximum output of 384K, and support for both thinking and non-thinking modes in the official pricing table.
DeepSeek keeps public base URLs for both OpenAI-format and Anthropic-format access, which means many existing SDK flows can be adapted without a custom client.
The public model table lists JSON output, tool calls, chat prefix completion, and beta FIM completion support. FIM is documented for non-thinking mode only.
Why Choose DeepSeek V4?
The official release focuses on long context, agentic coding, and lower-cost API access rather than vague roadmap promises.
Two-Tier Model Lineup
Use V4-Flash for lower-cost, higher-throughput calls, or V4-Pro when you want the stronger premium model in the same family.
Fact-Based Integration
You can use a standard OpenAI SDK, point it at api.deepseek.com, and change the model name without inventing a custom client layer.
Public Pricing and Limits
DeepSeek publishes per-1M-token pricing, cache-hit discounts, context length, max output, and concurrency limits in the public docs.
How to Integrate DeepSeek V4
The official quick start is simple: create an API key, keep the DeepSeek base URL, then call deepseek-v4-pro or deepseek-v4-flash from an OpenAI-compatible client.
Create an API key
Generate a key in platform.deepseek.com and use https://api.deepseek.com as the OpenAI-format base_url.
Choose the model
Use deepseek-v4-pro for the premium tier or deepseek-v4-flash for the lower-cost tier. The docs also expose an Anthropic-format base URL at /anthropic.
Enable reasoning when needed
The official examples show thinking enabled and reasoning_effort set explicitly, so you can raise reasoning depth only for tasks that need it.
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://api.deepseek.com",
)
response = client.chat.completions.create(
model="deepseek-v4-pro",
messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)FAQ About DeepSeek V4
Use the Official DeepSeek Sources
For real access and current pricing, go to chat.deepseek.com, platform.deepseek.com, and api-docs.deepseek.com. This site summarizes those public facts and links back to the primary pages.