I want an AI to help me write code

AI code assistant

Pairs with you in the editor — autocomplete, refactors, repo-aware chat.

6 wrappers indexed · Category · coding

Teardown

CURSOR

AI Code Editor

$9.9B

Public data & APIs

Wrapped product

AI code editor with frontier model access, tiered by usage limits

Same public code index + Claude agent on your codebase + VS Code fork

Backers

Andreessen Horowitz
Benchmark
Thrive Capital

Build it yourself →

Teardown

CODEIUM

Code Assistant

$1.25B

Public data & APIs

Wrapped product

IDE autocomplete + agent IDE with usage credits

Same repo indexing + code API + thin orchestration layer

Backers

General Catalyst
Kleiner Perkins

Build it yourself →

Teardown

AUGMENT

Code / Dev

—

Public data & APIs

Wrapped product

IDE agents, CLI, PR review, Slack bot

Same codebase indexing + Claude agent on your repo

Backers

Index Ventures

Build it yourself →

Teardown

AUGMENT

Code Gen

—

Public data & APIs

Wrapped product

IDE agents, CLI, PR review automation

Same repo connectors + Claude agent on your codebase

Build it yourself →

Teardown

COGNITION

Autonomous Agents

$2B

Public data & APIs

Wrapped product

Autonomous cloud agent for engineering tasks

Same API + Docker sandbox + agent loop — manual review gates

Backers

Founders Fund
8VC
Khosla Ventures
Thrive Capital

Build it yourself →

Teardown

TESSL

Dev Tools

$750M

Public data & APIs

Wrapped product

Versioned context package manager for coding agents

Same package docs + code model + local skill versioning

Backers

Index Ventures
Accel
GV (Google Ventures)

Build it yourself →

Then build it yourself

Most of the value is the same APIs + your data + a clean prompt.

Open any teardown above for the data layer, the agent prompt, and the exact internal substitute. The point isn't to clone the startup — it's to replay the useful workflow inside your org.