Web1 vs 2 vs 3 vs Web4
The complete evolution of the internet — from static pages to AI-powered autonomy.
| Aspect | Web1 1990s | Web2 2000s | Web3 2020s | Web4 2026+ |
|---|---|---|---|---|
| Core Paradigm | READ | READ/WRITE | READ/WRITE/OWN | READ/WRITE/OWN/ACT |
| Primary Users | Humans | Humans + Platforms | Humans + DAOs | AI Agents + Machines |
| Content Ownership | Publishers | Platforms | Users (NFTs) | Agents/Machines |
| Economy | Ads (later) | VC + Ads | Tokens + DeFi | Machine Micropayments |
| Key Tech Stack | HTML/CSS | JavaScript/APIs | Blockchain/Smart Contracts | AI Agents + x402 |
| Examples | Yahoo, Static sites | Facebook, Google | Ethereum, OpenSea | Automaton, Agent marketplaces |
| Traffic Source | <1% Bots | ~20% Bots | ~30% Bots | >70% AI Agents |
Cumulative Evolution
Web4 doesn't replace previous eras — it layers on top. Modern sites must support human browsing and AI agent consumption.
Agent-First Design
Tomorrow's winners build APIs for machines, not just UIs for humans. Structured data + micropayments = Web4 ready.
Comparison FAQ
What is the main difference between Web3 and Web4?
Web3 focuses on decentralization and ownership via blockchain. Web4 adds AI autonomy — agents that act independently on behalf of users.
Does Web4 require Web3 technology?
Web4 builds upon Web3 but isn't dependent. Core requirements are AI agents and machine protocols; blockchain is optional but complementary.
When did each web era start?
Web1: 1990s, Web2: 2004 (Facebook), Web3: 2017 (Ethereum ICO boom), Web4: 2026 (AI agent marketplaces).
Will Web4 replace previous web versions?
No — each builds cumulatively: Web4 sites support all previous paradigms plus AI interactions.