---
id: arbitrum
title: Arbitrum
description: Layer 2 scaling solution for Ethereum.
image: /img/partners/arbitrum.png
website: https://arbitrum.io
twitter:
tags: ['Company']
hide_table_of_contents: true
---

# Arbitrum

<div className="partner-logo">
  <img src="/img/partners/arbitrum.png" alt="Arbitrum logo" />
</div>

Layer 2 scaling solution for Ethereum.

## About Arbitrum

Arbitrum is a leading Layer 2 scaling solution for Ethereum, designed to enhance transaction speed and reduce costs while maintaining Ethereum's security. Developed by Offchain Labs, it utilizes **optimistic rollup technology** to batch transactions off-chain before submitting them to Ethereum. Key products include:

- **Arbitrum One**: Mainnet for decentralized applications (dApps)
- **Arbitrum Orbit**: Permissionless framework for launching custom Layer 3 chains
- **Stylus**: Multi-language smart contract environment (Rust, C, C++)

As the largest Ethereum Layer 2 by Total Value Locked (TVL), Arbitrum hosts 500+ dApps and processes ~10x more transactions than Ethereum mainnet at &lt;1% of the cost. Its ecosystem spans DeFi, NFTs, gaming, and enterprise solutions.

## Technology

Arbitrum's core innovations include:

1. **Optimistic Rollups**: Batches transactions off-chain, assuming validity unless challenged via fraud proofs.
2. **Nitro Stack**: WASM-based virtual machine improving compatibility and performance.
3. **Multi-Round Fraud Proofs**: Enables trustless validation through interactive dispute resolution.
4. **EVM+ Compatibility**: Executes Ethereum contracts unmodified while adding custom precompiles.
5. **AnyTrust Channels**: Dedicated throughput with validator committees for enterprise use cases.

This architecture solves Ethereum's scalability trilemma by achieving 40,000 TPS while inheriting Ethereum's security. The **Arbitrum DAO** (governed by ARB token holders) oversees protocol upgrades and treasury management.

## Key Features

- **EVM+ Bytecode Compatibility**: Run Ethereum contracts without modifications
- **Sub-Cent Transaction Fees**: 90-95% cheaper than Layer 1 Ethereum
- **Stylus Multi-VM**: Deploy Rust/C++ contracts interoperable with Solidity
- **Cross-Chain Messaging**: Native bridge supporting ETH/ERC-20 transfers
- **Onchain Privacy**: Integration with ZK-proof systems via partnership with Aztec
- **Decentralized Sequencing**: MEV-resistant transaction ordering
- **Gasless Relays**: Meta-transactions sponsored by dApps

## Integration with Eliza

OS  
ElizaOS leverages Arbitrum's **MultiVM architecture** for AI agent deployment:

- **Stylus Integration**: AI agents execute Rust-based smart contracts natively [GitHub: @elizaos/plugin-evm](https://github.com/elizaos-plugins)
- **Onchain Actions**: Agents perform token swaps/transfers via prebuilt EVM plugin workflows
- **Funding Programs**: $1M+ Trailblazer grants for AI agent development on Arbitrum
- **ZK Co-Processor**: Collaborative Layer 3 with Zypher Network for verifiable AI inferences

Technical synergy enables:

- Real-time agent interactions with DeFi protocols
- RAG-enhanced transaction memory across Orbit chains
- Batch transaction processing via Nitro's compression engine

## Recent Developments

(2024-2025)

- **Q1 2025**: Launched Stylus 2.0 with Python support
- **March 2025**: ElizaOS partnership announcement with $2M joint grant pool
- **April 2025**: "Road to Devcon" Asian expansion targeting Seoul/Singapore developer communities
- **Upcoming**: Arbitrum Nova 2.0 upgrade (50% fee reduction)
- **Governance**: ARB token holders approved 50M ARB allocation for AI ecosystem grants

## Market Position

- **TVL**: $18.7B (56% of all rollup TVL)
- **Competitors**: Optimism (22% market share), zkSync Era (13%), Polygon zkEVM (9%)
- **Key Partners**: Chainlink, Lido, Uniswap, The Graph, and 30+ blockchain foundations
- **Adoption**: 12.4M monthly active wallets, 150+ institutional validators

## Links

- Website: [arbitrum.io](https://arbitrum.io)
- Documentation: [developer.arbitrum.io](https://developer.arbitrum.io)
- Governance: [arbitrum.foundation](https://arbitrum.foundation)
- GitHub: [github.com/OffchainLabs](https://github.com/OffchainLabs)
- Ecosystem Map: [arbitrum.io/ecosystem](https://arbitrum.io/ecosystem)