OpenSpec
Spec-driven framework for AI coding agents
San Francisco, CA, USA
Founded 2025
OpenSpec is a lightweight, open-source spec-driven development framework for AI coding assistants. It adds a spec layer to codebases through an openspec/ folder containing a spec library and a changes system, enabling developers to define requirements and technical designs before code is written, and providing durable context that persists across AI coding sessions.
Websites:
Last Updated: March 13, 2026
Current Valuation
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Funding Summary
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Announcement
June 2, 2026
FintechExtra: OpenSpec v1.4.0 Adds Kimi CLI and Mistral Vibe Agent Integrations | FintechExtra - AI Fintech News & Digital Banking Insights
OSS News & Views
May 5, 2026
HackerNoon: The Spec-First Development Showdown: Spec Kit, OpenSpec, BMad and Gangsta Agents Compared
Media Mention
April 8, 2026
First Line Software: AI development workflow with structured context - First Line Software
Media Mention
March 18, 2026
Thoughtworks: Beyond vibe coding: The five building blocks of AI-native engineering
Announcement
March 16, 2026
X (formerly Twitter) - Fondo: OpenSpec Launches: The Spec Framework for Coding Agents | Fondo
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Key People
Core OSS Projects
A lightweight spec-driven development framework for AI coding assistants that captures requirements, technical designs, and implementation tasks in markdown files alongside the codebase.
License: MIT
Business Information
Category
AI Coding AssistantIndustries
Software
Technologies
Developer ToolsSoftware DevelopmentAI Coding AgentsDocumentation
Sectors
Developers
Licenses
MIT
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