Codebuff · Sep 2025
Announces open sourcing of the Codebuff agent framework, claims improved evals versus Claude Code, and launches an SDK for building agents programmatically.
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Codebuff is a YC-backed, San Francisco-based AI coding assistant / CLI coding agent for terminal workflows. It indexes a codebase, identifies relevant files, edits code, runs tests and terminal commands, and now also offers an open-source SDK plus a free ad-supported Freebuff variant.
Primary product
AI coding assistant / CLI coding agent for terminal code edits
Founded
2024
Headquarters
San Francisco, California, United States
Team size
1-10 employees
Industry
Software Development
Sub-industry
AI coding assistant / AI coding agent
Business model
usage-based subscriptions
pay-as-you-go credits
limited free credits / trial
free ad-supported variant (Freebuff)
Funding
Stage
Pre-Seed
Total raised
$500K
Latest round
Pre-Seed · Dec 2024
Latest amount
$500K
Dec 2024 · Y Combinator
People & investors
Work & culture
Small, founder-led team with a fast launch cadence, heavy shipping intensity, and a strong community/open-source orientation around Discord, the blog, and the SDK.
Product & market
Pricing
Usage-based pricing with monthly subscription tiers and pay-as-you-go credits; eligible GitHub users receive free credits.
Differentiators
- —Terminal-first workflow
- —Deep codebase awareness via indexing and symbol mapping
- —Can edit multiple files and run tests/terminal commands
- —Designed for mature/large codebases
- —Open-source SDK and published agents
- —Supports multiple model providers / OpenRouter
- —Knowledge.md / codebase-guide style context handling
Technology
TypeScript
JavaScript
tree-sitter
Bun
Next.js
Postgres
Drizzle
Stripe
Auth.js
Render
BetterStack
Retool
Anthropic
OpenAI
OpenRouter
websockets
npm
Discord
Customers
individual software developers
engineering teams
founders/hackers building prototypes and apps
developers writing or fixing tests
teams doing refactors and scaffolding
Competitors
Cursor
Claude Code
Scale & contact
Estimated revenue
approximately $250K-$330K ARR (third-party estimates; under $1M)
Estimated monthly visits
56.5K
Traffic estimate as of Jul 2026
Latest news
Codebuff · Apr 2025
Discusses the launch-week finale, the team size, and the custom model for selecting relevant files more accurately.
Codebuff · Apr 2025
Introduces usage-based pricing and new subscription/credit mechanics for Codebuff.
Codebuff · Feb 2025
Launch update describing product improvements, hiring, and customer feedback channels; also points to support and founders email addresses.
Y Combinator
YC launch page describing Codebuff as a CLI-based coding agent for terminal use with free credits for launch users.
Jobs and careers at Codebuff
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