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OpenSpec Pricing

open sourceopen source · MITlast verified September 6, 2026official site ↗

At a glance

Free and 100% open source under the MIT license. OpenSpec is a local, self-contained CLI and file-based specification framework that requires no subscriptions, API keys, or proprietary backend services.

Self-hosting cost

OpenSpec is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

Free & cheaper System Prompts & Rules

same category, free plan or open-source license

AGENTS.mdopen sourceFree and 100% open standard under the MIT license. AGENTS.md is stewarded by the Linux Foundation's Agentic AI Foundation (AAIF) with zero licensing fees or vendor lock-in.Agent Skillsopen sourceNo paid product or SaaS tier: the Agent Skills specification and code are free under Apache-2.0 (docs under CC BY 4.0). Compatible clients manage their own pricing.Cursor Rulesopen sourceFree and 100% open source under the MIT license. Cursor Directory (cursor-rules) provides free access to curated .cursorrules prompt files, web search directory, and community contributions with no subscription or paywall.Spec Kitopen source100% free and open-source under the MIT license. GitHub Spec Kit is a specification-driven development toolkit with no licensing fees, seat costs, or subscription paywalls, running locally via the specify-cli command-line tool.
OpenSpec overview →alternatives →

FAQ

How much does OpenSpec cost?

Free and 100% open source under the MIT license. OpenSpec is a local, self-contained CLI and file-based specification framework that requires no subscriptions, API keys, or proprietary backend services.

Does OpenSpec have a free plan?

Yes — OpenSpec is open source and free to use.

Can you self-host OpenSpec for free?

OpenSpec is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

What are free or cheaper OpenSpec alternatives?

AGENTS.md, Agent Skills, Cursor Rules are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.