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What is Morph?

Morph Fast Apply is a tool that you give to your AI agent that allows it to edit code or files. When building AI agents that edit code or files you have 3 options:
  1. Rewrite entire files (slow, expensive, loses context, hallucinates updates) - 100+ seconds per file edit
  2. Use search-and-replace (brittle, fails on whitespace/formatting, needs self correction loops) - 86% accurate with Claude 4 Sonnet: 35s per file edit
  3. Fast Apply via an edit_file tool (fast, accurate, semantic) - 98% accurate with Morph + Claude 4 Sonnet: 6s per file edit
Start Here → Quickstart Guide

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Why You Need It

Current AI code editing is broken. Agents either:
  • Rewrite entire files (slow, expensive, loses context)
  • Use search-and-replace (brittle, fails, needs self correction)
You lose customers while your agents are fixing patch errors. Fast Apply solves this. Your agent uses an edit_file tool that writes lazy edit snippets, and Fast Apply handles the merging - the same way Cursor does it. Fast, Reliable Edits every time

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How It Looks in Your Code

  1. Give your agent an edit_file tool - It generates abbreviated edit snippets in this tool call
  2. Call Morph’s API inside the tool - We merge the edit with the original file FAST, using our specialized models
  3. Write the result - Get the merged code back and save it to your filesystem
const response = await openai.chat.completions.create({
  model: "morph-v3-large",
  messages: [{
    role: "user", 
    content: `<instruction>${instructions}</instruction>\n<code>${originalCode}</code>\n<update>${codeEdit}</update>`
  }]
});

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How edit_file Works

See how Claude integrates with Morph to deliver lightning-fast, accurate code edits:

Apply Model

Apply code changes at 4,500+ tokens/sec with 98% accuracy

Embedding Model

Embeddings built for code

Rerank Model

Reorder code results with code reranking

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Why Choose Morph?

  • Built for Code: Specialized models trained for code understanding and editing
  • Universal Integration: OpenAI-compatible with native support for OpenRouter, Vercel AI SDK, and MCP
  • Enterprise Ready: Dedicated instances, self-hosted, and on-premises options

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Enterprise Ready

Your code. Your cloud. Your AI advantage.
  • Dedicated Instances: Managed cloud infrastructure with guaranteed performance and 99.9% uptime SLA
  • Self-Hosted: Deploy on your own infrastructure - on-premises or cloud with full control
  • Zero Data Retention: ZDR-ready with enterprise security, audit trails, and IAM integration

Contact Sales

Get custom deployment options and enterprise features

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Next Steps

Ready to start building with Morph? Here’s what to do next:

Try the API Playground

Test Fast Apply with live examples

Get Your API Key

Set up authentication and test your first API call in minutes

Explore the Apply Model

Learn how to use Morph’s Fast Apply for precise code edits

Integrate with Morph

Create edit_file tools for AI agents and development environments