The best AI for developers

Claude is the not-so-secret advantage for world class engineering teams and software companies.

Factory logo

Write code with Claude

Get complete insight into your codebase and accelerate exceptional software.

Explore agentic coding

  • Write, test, and debug complex software
  • Analyze codebases with expert-level reasoning
  • Delegate dev tasks to Claude with computer use
  • Streamline dev cycles while maintaining quality

Developers love Claude

Cursor + Claude 3.5 Sonnet has made it 10x more fun to be a CEO who codes

Sahil Lavingia@shl

Some interesting data on how Anthropic's Sonnet 3.5 seems to remain by far the most capable LLM for coding. Every single leading GenAI-powered IDE (Cursor, Windsurf, Zed, Copilot etc) favor this model. A good question: how is Claude so much better for code generation?

Gergely Orosz@GergelyOrosz

Build products with the Anthropic API

Integrate Claude's powerful AI capabilities into your apps and deliver production-grade solutions faster.

Deliver amazing AI experiences

  • Customize how Claude fits into your solution with our API
  • Improve and evaluate your prompts in the Workbench
  • Build frontier intelligence into your applications
  • Turn anyone into an AI developer with rich docs and tooling

Claude with computer use is a leap forward in autonomous AI…showing marked improvements in coding, planning, and problem-solving. Its visual capabilities enable human-like UI interaction. Together, they’re opening doors to a new generation of AI products capable of real-world decision-making and action.

Scott WuCo-Founder & CEO of Cognition

Since we have AI-powered use cases across the entire software development lifecycle, we need an approach that enables us to choose the right model for the right use case. We see consistently strong performance from Claude models for thoughtful, holistic, and contextualized code generation and other software development-related tasks

Taylor McCaslinGroup Manager of Product Data Science AI/ML at GitLab

The new Claude's computer use goes above and beyond our expectations, and we’re ready to build a key capability of our Replit Agent based on it. By navigating new UIs with a thoughtful testing plan, it opens the door to creating a powerful autonomous verifier that can evaluate apps while they’re being built. This is the breakthrough we’ve been waiting for.

Michele CatastaPresident of Replit

We’ve decided to use Claude as our default chat model in Cody. It’s fantastic at incorporating the context we provide into accurate answers about a user’s private codebase and writing code that fits within the context of your code. The family of models, from Opus to Haiku, provides several great points along the frontier of speed and intelligence that power multiple Cody features.

Beyang LiuChief Technology Officer and Cofounder of Sourcegraph

Claude was especially good at code understanding, which for code review is incredibly important... When we tested Claude, it was immediately clear—this was the most accurate model we'd ever seen.

Alyssa BaumLead AI Engineer at Graphite

Claude does 90 to 97% of the code implementation so I can focus my time on architecture design & problem solving... ripped out the entire RAG and just put it in the context window instead and it went from 60 percent accuracy to 98. It was quicker, cheaper, better, everything.

Nicole HedleyCo-founder of Headstart

Claude is the enabling technology that made [the bolt.new product] possible, period... There's an order of magnitude difference in the LLM's required infrastructure to make it functional versus zero shot.

Eric SimonsCEO and Co-founder of Stackblitz

Get started with Claude