--- title: "prompts.chat vs LeanEuclid" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/f-prompts-chat-vs-loganrjmurphy-leaneuclid" tools: ["f-prompts-chat", "loganrjmurphy-leaneuclid"] --- # prompts.chat vs LeanEuclid *GraphCanon updated Jul 12, 2026* ## Verdict Pick prompts.chat when prompts.chat is primarily HTML; LeanEuclid is Lean; pick LeanEuclid when leanEuclid is primarily Lean; prompts.chat is HTML. [prompts.chat](https://prompts.chat) reports 165k GitHub stars, 21k forks, and 60 open issues, last pushed Jul 11, 2026. [LeanEuclid](http://arxiv.org/abs/2405.17216) has 136 stars, 17 forks, and 5 open issues, last pushed Nov 25, 2025. Figures are from public GitHub metadata via [prompts.chat's repository](https://github.com/f/prompts.chat) and [LeanEuclid's repository](https://github.com/loganrjmurphy/LeanEuclid). | | [prompts.chat](/tools/f-prompts-chat.md) | [LeanEuclid](/tools/loganrjmurphy-leaneuclid.md) | | --- | --- | --- | | Tagline | Share, discover, and collect prompts from the community | LeanEuclid is a benchmark for autoformalization in the domain of Euclidean geometry, targeting the proof assistant Lean. | | Stars | 165,372 | 136 | | Forks | 21,400 | 17 | | Open issues | 60 | 5 | | Language | HTML | Lean | | Adopt for | Critical decision points for evaluating `prompts.chat` | - | | Persona | - | - | | Runtime | - | - | | License | Other | MIT | | Categories | LLM Frameworks, Developer Tools | LLM Frameworks, Computer Vision, Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [prompts.chat](/tools/f-prompts-chat.md) | [LeanEuclid](/tools/loganrjmurphy-leaneuclid.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Slowing (36%) | | Days since push | 0d | 227d | | Open issues (now) | 60 | 5 | | Full report | [trust report](/tools/f-prompts-chat/trust.md) | [trust report](/tools/loganrjmurphy-leaneuclid/trust.md) | ## Decision facts: prompts.chat - **Adopt for:** Critical decision points for evaluating `prompts.chat` ## Choose when ### Choose prompts.chat if… - prompts.chat is primarily HTML; LeanEuclid is Lean. - License: prompts.chat is Other, LeanEuclid is MIT. - Tags unique to prompts.chat: llm, ai, artificial-intelligence, gemini. - Critical decision points for evaluating `prompts.chat` ### Choose LeanEuclid if… - LeanEuclid is primarily Lean; prompts.chat is HTML. - License: LeanEuclid is MIT, prompts.chat is Other. - Tags unique to LeanEuclid: lean, euclidean-geometry, autoformalization, formalization. - Also covers Computer Vision. - LeanEuclid ships Docker support for self-hosted deployment. ## When NOT to use prompts.chat - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. - Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ## When NOT to use LeanEuclid - Last GitHub push was 228 days ago (slowing maintenance, Nov 25, 2025). Validate activity before betting a new project on LeanEuclid. - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. - Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ## Common questions ### What is the difference between prompts.chat and LeanEuclid? prompts.chat: Share, discover, and collect prompts from the community. LeanEuclid: LeanEuclid is a benchmark for autoformalization in the domain of Euclidean geometry, targeting the proof assistant Lean.. See the comparison table for live GitHub stats and shared categories. ### When should I choose prompts.chat over LeanEuclid? Choose prompts.chat over LeanEuclid when prompts.chat is primarily HTML; LeanEuclid is Lean; License: prompts.chat is Other, LeanEuclid is MIT; Tags unique to prompts.chat: llm, ai, artificial-intelligence, gemini; Critical decision points for evaluating `prompts.chat`. ### When should I choose LeanEuclid over prompts.chat? Choose LeanEuclid over prompts.chat when LeanEuclid is primarily Lean; prompts.chat is HTML; License: LeanEuclid is MIT, prompts.chat is Other; Tags unique to LeanEuclid: lean, euclidean-geometry, autoformalization, formalization; Also covers Computer Vision; LeanEuclid ships Docker support for self-hosted deployment. ### When should I avoid prompts.chat? LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ### When should I avoid LeanEuclid? Last GitHub push was 228 days ago (slowing maintenance, Nov 25, 2025). Validate activity before betting a new project on LeanEuclid. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. Developer Tools: A gateway is overkill when you're pinned to a single provider and model. ### Is prompts.chat or LeanEuclid more popular on GitHub? prompts.chat has more GitHub stars (165,372 vs 136). Stars measure visibility, not whether either tool fits your constraints. ### Are prompts.chat and LeanEuclid open source? Yes - both are open-source projects on GitHub (prompts.chat: Other, LeanEuclid: MIT). ### Where can I find alternatives to prompts.chat or LeanEuclid? GraphCanon lists graph-backed alternatives at [prompts.chat alternatives](/tools/f-prompts-chat/alternatives) and [LeanEuclid alternatives](/tools/loganrjmurphy-leaneuclid/alternatives) ([prompts.chat markdown twin](/tools/f-prompts-chat/alternatives.md), [LeanEuclid markdown twin](/tools/loganrjmurphy-leaneuclid/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/f-prompts-chat-vs-loganrjmurphy-leaneuclid.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, prompts.chat or LeanEuclid? prompts.chat: Very active. LeanEuclid: Slowing. 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 prompts.chat and LeanEuclid? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [prompts.chat trust report](/tools/f-prompts-chat/trust); [LeanEuclid trust report](/tools/loganrjmurphy-leaneuclid/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=f-prompts-chat`](/api/graphcanon/graph?tool=f-prompts-chat) - 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/_