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FAN-MADE V4 GUIDE|NOT AFFILIATED WITH DEEPSEEK

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The complete, step-by-step tutorial directory for DeepSeek V4 Flash. Learn how to access official APIs, optimize costs, and connect LLMs to your apps — simplified for everyone. An independent fan-made resource, not run by DeepSeek.

OFFICIAL PRICE
$0.14 / 1M Input Tokens
MODEL SIZE
284B Total Params
CONTEXT
1M Tokens
DIFFICULTY
Beginner Friendly
Live Tracker|DeepSeek Harness
Updated Aug 1, 2026

DeepSeek Harness Coming Soon

DeepSeek's official agent framework — the “Model + Harness = Agent” layer that runs every official agent benchmark. When it ships alongside the V4 Pro official release, DeepSeek's agent capability could jump significantly.

OFFICIAL STATUS
Not released

"to be released soon" — official changelog, 2026-07-31

OFFICIAL SIGNAL
Shipped with V4 Flash 0731

All 9 agent benchmarks (Terminal-Bench 82.7, DeepSWE 54.4) measured on its minimal mode

REPORTED
Internal testing + NDA beta

Aug 10–20 window reported — not confirmed by DeepSeek

WATCH FOR
4 official signals

changelog GA entry · GitHub repo · official X · product page

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FEATURED GUIDES & TUTORIALS

19 ARTICLES
01
Model Guide8 MIN READ

What Is DeepSeek V4 Flash? Full Guide to the 0731 Release

A 284B-parameter open-weight MoE with 1M context. What the July 31, 2026 official release actually changed versus the preview.

02
API Integration7 MIN READ

DeepSeek V4 Flash API Setup: Base URL, Models & Your First Call

Step-by-step: create an API key, set the base URL, and make your first call with curl, Python, or Node.js.

03
Cost Optimization10 MIN READ

DeepSeek V4 Flash Pricing: Token Costs & How to Save Up to 98%

Official token pricing ($0.14 / $0.28 per 1M), the ~98% context-cache discount, and real savings vs GPT-5.5 and Claude.

04
Benchmarks7 MIN READ

DeepSeek V4 Flash Benchmarks: Agentic & Coding Scores in 2026

All nine official agentic benchmarks, the +645% DeepSWE jump, and how V4 Flash stacks up against GLM-5.2 and Opus-4.8.

05
Coding Agents7 MIN READ

Use DeepSeek V4 Flash with OpenCode: Step-by-Step

Connect the open-source OpenCode agent to DeepSeek V4 Flash in minutes with the official /connect deepseek flow.

06
Cursor & IDE8 MIN READ

DeepSeek V4 Flash in Cursor, Claude Code & Codex: Setup Guide

Configure DeepSeek V4 Flash in Cursor, Claude Code (ANTHROPIC_BASE_URL), and Codex with the official one-click script.

07
OpenRouter8 MIN READ

DeepSeek V4 Flash on OpenRouter: Setup, Pricing & BYOK

Two model slugs, third-party pricing, BYOK setup, and when to route through OpenRouter instead of the official API.

08
Model Size9 MIN READ

DeepSeek V4 Flash Model Size: Params, VRAM & What It Means

284B total / 13B active explained, weight sizes in FP4/FP8/BF16, and what GPU you actually need to run it.

09
Local Deployment7 MIN READ

Download DeepSeek V4 Flash from HuggingFace & Run It Locally

Download the MIT-licensed DeepSeek-V4-Flash-0731 weights from HuggingFace and serve them with vLLM.

10
V4 Pro10 MIN READ

DeepSeek V4 Pro: Specs, Pricing & Release Date (2026)

1.6T-parameter flagship still in preview. Specs, official pricing, self-reported benchmarks, and the expected release window.

11
Beginner Guide8 MIN READ

Why DeepSeek V4 Is the Best Cheap AI Right Now: A Beginner Guide

Don't know model names? Here's why DeepSeek V4 is the best cheap AI to start with — plain-English, with honest limitations.

12
OpenCode Go7 MIN READ

OpenCode Go: The $5/Month Subscription That Unlocks DeepSeek V4

The $5/month subscription that unlocks DeepSeek V4 Flash and Pro — roughly 158K Flash requests a month for $10.

13
Claude Code8 MIN READ

Connect Claude Code & Claude Desktop to DeepSeek V4 with CC Switch

Point Claude Code & Claude Desktop at DeepSeek V4 using CC Switch — official env vars, Desktop dev mode, and Linux setup.

14
Upcoming9 MIN READ

DeepSeek Harness: Everything We Know Before the Official Release

DeepSeek's official agent framework is unreleased but every benchmark was measured on it. Everything we know so far.

15
Technical8 MIN READ

DeepSeek V4 Technical Report Explained: Architecture & Benchmarks

A guided tour of the DeepSeek V4 paper — CSA+HCA attention, Muon, 27% of V3.2's FLOPs, and how to read the model cards.

16
Harness9 MIN READ

Why a Native Harness Makes AI Agents Dramatically Better

Why 'Model + Harness = Agent' — the context management, tool loops, and self-correction that turn a raw model into a real agent.

17
Cost Hacks10 MIN READ

Reasonix: The DeepSeek Harness That Hits 99%+ Cache Rates

Reasonix hits 99%+ DeepSeek cache rates — 435M input tokens for $1.38 instead of $61. How the cache-first loop saves ~98%.

18
Hermes9 MIN READ

Hermes Best Setup: DeepSeek V4 Flash 0731 + MiMo V2.5 (Vision)

The community-verified best pairing for Hermes: DeepSeek V4 Flash 0731 as the text brain + MiMo V2.5 for vision.

19
Comparisons9 MIN READ

DeepSeek V4 vs GPT-5.6 Luna: Which Is Better After the Price Cut?

DeepSeek V4 Flash vs the price-cut GPT-5.6 Luna: AI Intelligence Index 50 vs 51, but 60% lower cost per task. Who wins by scenario.

QUICK INTEGRATION CODE SNIPPET

PYTHON 3.10+
quickstart.py
import os
from openai import OpenAI

# 100% OpenAI SDK compatible - just change the base_url
client = OpenAI(
    api_key=os.environ.get("DEEPSEEK_API_KEY"),
    base_url="https://api.deepseek.com"
)

response = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[
        {"role": "system", "content": "You are a helpful coding assistant."},
        {"role": "user", "content": "What is the best practice to integrate DeepSeek V4?"}
    ],
    stream=True
)

for chunk in response:
    print(chunk.choices[0].delta.content or "", end="")
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FREQUENTLY ASKED QUESTIONS

QUICK ANSWERS

Is DeepSeek V4 Flash open source?

Yes. DeepSeek released the V4 Flash weights (284B total / 13B active, 1M context) under the MIT license on Hugging Face on July 31, 2026. You can download them for free or call them through the official API.

Download the weights

How much does DeepSeek V4 Flash cost?

The official API charges $0.14 per 1M input tokens and $0.28 per 1M output tokens, with a roughly 98% discount on context-cache hits ($0.0028 / 1M). That makes it dramatically cheaper than GPT-5.5 or Claude for most workloads.

Full pricing guide

Does DeepSeek V4 Flash support image input?

No — V4 Flash is text-only. For image support, community setups pair it with Xiaomi MiMo V2.5 in the vision slot, which bills at the same $0.14 / $0.28 per 1M rate.

Vision setup guide

What base URL do I use for the DeepSeek API?

Use https://api.deepseek.com. It is OpenAI-compatible (the /v1 prefix is optional), and DeepSeek also exposes an Anthropic-compatible endpoint at https://api.deepseek.com/anthropic for Claude Code and similar tools.

API setup guide

Can I run DeepSeek V4 Flash on my own hardware?

Yes, though it is heavy. The FP4/FP8 weights are about 160 GB, so you realistically need a multi-GPU setup (two RTX 3090s or better) or a large unified-memory machine. The official vLLM recipe is the recommended path.

VRAM & model size

Is this site run by DeepSeek?

No. DeepSeek V4 Guide is an independent, fan-made resource. We are not affiliated with or endorsed by DeepSeek. Always check status.deepseek.com and the official docs for production-critical information.

About this site