--- title: "LeanCopilot vs moby" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/lean-dojo-leancopilot-vs-moby-moby" tools: ["lean-dojo-leancopilot", "moby-moby"] --- # LeanCopilot vs moby *GraphCanon updated Jul 11, 2026* ## Verdict Pick LeanCopilot when leanCopilot is primarily C++; moby is Go; pick moby when moby is primarily Go; LeanCopilot is C++. [LeanCopilot](https://leandojo.org/leancopilot.html) reports 1.3k GitHub stars, 126 forks, and 4 open issues, last pushed Jun 20, 2026. [moby](https://mobyproject.org/) has 72k stars, 19k forks, and 3.8k open issues, last pushed Jul 10, 2026. Figures are from public GitHub metadata via [LeanCopilot's repository](https://github.com/lean-dojo/LeanCopilot) and [moby's repository](https://github.com/moby/moby). | | [LeanCopilot](/tools/lean-dojo-leancopilot.md) | [moby](/tools/moby-moby.md) | | --- | --- | --- | | Tagline | LLMs as Copilots for Theorem Proving in Lean | The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems | | Stars | 1,299 | 71,899 | | Forks | 126 | 19,126 | | Open issues | 4 | 3,821 | | Language | C++ | Go | | Adopt for | - | - | | Persona | - | - | | Runtime | - | - | | License | MIT | Apache-2.0 | | Categories | LLM Frameworks, Inference & Serving | LLM Frameworks, Inference & Serving, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [LeanCopilot](/tools/lean-dojo-leancopilot.md) | [moby](/tools/moby-moby.md) | | --- | --- | --- | | Maintenance | Active (82%) | Very active (96%) | | Days since push | 20d | 1d | | Open issues (now) | 4 | 3.8k | | Security scan | No lockfile | No criticals | | Full report | [trust report](/tools/lean-dojo-leancopilot/trust.md) | [trust report](/tools/moby-moby/trust.md) | ## Choose when ### Choose LeanCopilot if… - LeanCopilot is primarily C++; moby is Go. - License: LeanCopilot is MIT, moby is Apache-2.0. - Tags unique to LeanCopilot: lean, formal-mathematics, llm, machine-learning. ### Choose moby if… - moby is primarily Go; LeanCopilot is C++. - License: moby is Apache-2.0, LeanCopilot is MIT. - Tags unique to moby: go, docker, golang, containers. - Also covers Developer Tools. - moby ships Docker support for self-hosted deployment. ## When NOT to use LeanCopilot - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. - Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. ## When NOT to use moby - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. - Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. - Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ## Common questions ### What is the difference between LeanCopilot and moby? LeanCopilot: LLMs as Copilots for Theorem Proving in Lean. moby: The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems. See the comparison table for live GitHub stats and shared categories. ### When should I choose LeanCopilot over moby? Choose LeanCopilot over moby when LeanCopilot is primarily C++; moby is Go; License: LeanCopilot is MIT, moby is Apache-2.0; Tags unique to LeanCopilot: lean, formal-mathematics, llm, machine-learning. ### When should I choose moby over LeanCopilot? Choose moby over LeanCopilot when moby is primarily Go; LeanCopilot is C++; License: moby is Apache-2.0, LeanCopilot is MIT; Tags unique to moby: go, docker, golang, containers; Also covers Developer Tools; moby ships Docker support for self-hosted deployment. ### When should I avoid LeanCopilot? LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. ### When should I avoid moby? LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ### Is LeanCopilot or moby more popular on GitHub? moby has more GitHub stars (71,899 vs 1,299). Stars measure visibility, not whether either tool fits your constraints. ### Are LeanCopilot and moby open source? Yes - both are open-source projects on GitHub (LeanCopilot: MIT, moby: Apache-2.0). ### Where can I find alternatives to LeanCopilot or moby? GraphCanon lists graph-backed alternatives at [LeanCopilot alternatives](/tools/lean-dojo-leancopilot/alternatives) and [moby alternatives](/tools/moby-moby/alternatives) ([LeanCopilot markdown twin](/tools/lean-dojo-leancopilot/alternatives.md), [moby markdown twin](/tools/moby-moby/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/lean-dojo-leancopilot-vs-moby-moby.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, LeanCopilot or moby? LeanCopilot: Active. moby: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for LeanCopilot and moby? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [LeanCopilot trust report](/tools/lean-dojo-leancopilot/trust); [moby trust report](/tools/moby-moby/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=lean-dojo-leancopilot`](/api/graphcanon/graph?tool=lean-dojo-leancopilot) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_