Independent · No affiliation · Updated 2026

The Independent Guide to DeepSeek AI

Honest reviews, step-by-step tutorials, and head-to-head comparisons for DeepSeek V4-Pro, V4-Flash, V3.2, R1, and the entire DeepSeek ecosystem — written by AI practitioners, not marketers.

New: DeepSeek V4 Preview shipped April 24, 2026 with 1M-token context on both tiers. Read the V4 deep-dive →

Start with the basics → See all comparisons
  • 160+in-depth articles
  • 18model deep-dives
  • 20head-to-head comparisons
  • 100%independent

DeepSeek AI Guide is the most thorough independent resource for anyone using or evaluating DeepSeek — the Chinese AI lab whose V4 Preview (released April 24, 2026) pushed 1M-token context and 80.6 % SWE-Bench into open-weight territory, building on the V3.2 and R1 work that redrew the cost curve of frontier AI. We’re not affiliated with DeepSeek and we don’t take sponsorships from them or their competitors. What you find here — every review, tutorial, benchmark, and comparison — is written by practitioners who run these models every day. Whether you’re a developer evaluating the DeepSeek API, a student deciding between DeepSeek vs ChatGPT, or a team exploring alternatives, start below and work outward.

Start here

New to DeepSeek? These are the six articles every reader should read first.

01 Models

DeepSeek V4 Preview: Pro and Flash Tiers, 1M Context, Tested

Read the guide → 02 Guides

What Is DeepSeek? The Independent Guide for 2026

Read the guide → 03 Guides

DeepSeek Chat: The 2026 Guide to the Web App, Mobile and API

Read the guide → 04 Comparisons

DeepSeek vs ChatGPT: Which One Should You Actually Use in 2026?

Read the guide → 05 Tutorials

DeepSeek API Getting Started: A Hands-On V4 Quickstart

Read the guide → 06 Reviews

DeepSeek Review: V4-Pro and V4-Flash After Two Weeks in Production

Read the guide →

Browse every DeepSeek topic

Our entire library is organized into 10 focused hubs. Pick a topic and go deep.

Models

V4-Pro, V4-Flash, V3.2, R1, Coder, Math, VL — every model deep-dived.

18 articles→

Tutorials

Step-by-step guides for the app, API, VS Code, Ollama, and Docker.

20 articles→

Comparisons

DeepSeek vs ChatGPT, Claude, Gemini, o1, Llama, Qwen and more.

20 articles→

Use Cases

Coding, writing, research, SEO, education, business and more.

20 articles→

API

Documentation, pricing, rate limits, streaming, function calling.

15 articles→

Guides

The chatbot, mobile app, login, pricing, privacy, safety.

34 articles→

Tools

Token counters, pricing calculators, prompt generators.

10 articles→

Reviews

Honest hands-on reviews of every major DeepSeek product.

8 articles→

Alternatives

Open-source and premium AI models compared side by side.

10 articles→

News

Model releases, benchmark results, research papers.

8 articles→

DeepSeek vs the alternatives

Honest head-to-head comparisons — benchmarks, pricing, features, real-world testing.

View all 20 comparisons →
DeepSeek vs ChatGPT: Which One Should You Actually Use in 2026? vs

DeepSeek vs ChatGPT: Which One Should You Actually Use in 2026?

Read the comparison →
DeepSeek vs Claude in 2026: Honest Head-to-Head Comparison vs

DeepSeek vs Claude in 2026: Honest Head-to-Head Comparison

Read the comparison →
DeepSeek vs Gemini in 2026: V4 Meets Gemini 3.1 Pro vs

DeepSeek vs Gemini in 2026: V4 Meets Gemini 3.1 Pro

Read the comparison →
DeepSeek R1 vs OpenAI o1: Reasoning Models Compared in 2026

DeepSeek R1 vs OpenAI o1: Reasoning Models Compared in 2026

Read the comparison →
DeepSeek V3 vs GPT-4o: Benchmarks, Price and Real-World Verdict

DeepSeek V3 vs GPT-4o: Benchmarks, Price and Real-World Verdict

Read the comparison →
DeepSeek Coder vs Copilot: A Practitioner’s 2026 Comparison

DeepSeek Coder vs Copilot: A Practitioner’s 2026 Comparison

Read the comparison →

Popular DeepSeek guides

Everyday questions answered — the chatbot, the app, login, pricing, privacy.

All 34 guides →
Guides

DeepSeek Chat: The 2026 Guide to the Web App, Mobile and API

Read the guide Guides

The DeepSeek App: What It Does, How to Install It Safely

Read the guide Guides

DeepSeek Login: How to Sign In to Chat, App and the Developer Platform

Read the guide Guides

Is DeepSeek Free? What You Actually Pay in 2026

Read the guide Guides

Is DeepSeek Safe? A Practical Guide to DeepSeek Safety in 2026

Read the guide Guides

How to Use DeepSeek on iPhone: A Practical 2026 Guide

Read the guide

DeepSeek AI — frequently asked questions

Quick answers to the questions we hear most often. For deep dives, follow the links inside each answer.

What is DeepSeek AI?
DeepSeek is a Chinese AI research lab that builds open-weight large language models. Its current generation is DeepSeek V4, released April 24, 2026 as two MIT-licensed MoE models — V4-Pro (1.6T total / 49B active) and V4-Flash (284B / 13B active) — both shipping with 1M-token context by default. Previous generations (V3.2, R1, Coder, Math, VL) are still available and still relevant where cost or hardware matters.
Is DeepSeek free to use?
Yes. The DeepSeek web chat and mobile app are free, and the API is priced dramatically below OpenAI and Anthropic — V4-Flash runs $0.14 per million input tokens (cache-miss) and $0.28 per million output tokens as of April 2026. That makes it practical for students, hobbyists, and side projects.
How does DeepSeek compare to ChatGPT?
DeepSeek V4-Pro posted 80.6 % on SWE-Bench Verified at launch and costs roughly 7× less than comparable frontier-tier APIs at list prices. ChatGPT still leads on image generation, ecosystem integrations, and consumer features. Our DeepSeek vs ChatGPT article has the full head-to-head — refreshed for V4.
Which DeepSeek model should I use?
For most chat, writing, and everyday coding work, DeepSeek V4-Flash is the default — it’s cheap, fast, and supports thinking mode. For frontier-tier reasoning and agentic coding, use V4-Pro. If you’re on legacy `deepseek-chat` or `deepseek-reasoner` IDs, they still work but retire on July 24, 2026 — plan to migrate. Our Models hub breaks down every option.
Is DeepSeek safe and private?
The models themselves are safe. Because DeepSeek is a Chinese service, chat conversations may be logged on servers subject to Chinese law. For sensitive data, self-host an open-weight DeepSeek model locally — our local install guide shows how.
How do I get started with the DeepSeek API?
Register at platform.deepseek.com, generate an API key, and call the chat-completions endpoint. DeepSeek is OpenAI-compatible, so the existing OpenAI SDK works with a one-line base-URL change. See our getting started tutorial.

Written by practitioners. Reviewed for accuracy. Independent by design.

Hands-on, not press-release

Every review, benchmark, and tutorial is produced by engineers who actually run the models — on the web app, on the API, and on local hardware.

No affiliation, no sponsorship

We are not affiliated with DeepSeek, OpenAI, Anthropic, Google, or Meta. Our revenue comes from reader-supported ads only — never from the companies we cover.

Updated, not archived

The AI landscape moves fast. Every core article carries an updated date and is revisited when a new model, price, or policy lands.

Read our editorial guidelines, about the team, and independence disclaimer.