--- title: "evalplus vs leva" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/evalplus-evalplus-vs-kieranklaassen-leva" tools: ["evalplus-evalplus", "kieranklaassen-leva"] --- # evalplus vs leva *GraphCanon updated Oct 8, 2026* ## Verdict Pick evalplus if evalplus offers tools for rigorously benchmarking and evaluating large language models like GPT-4 and ChatGPT in synthesizing program code using Python under the Apache-2.0 license; pick leva if leva is an LLM evaluation framework for Ruby on Rails apps, aiming to use production data directly in the evaluation process. [evalplus](https://evalplus.github.io) reports 1.8k GitHub stars, 209 forks, and 78 open issues, last pushed Oct 2, 2025. [leva](https://github.com/kieranklaassen/leva) has 146 stars, 7 forks, and 5 open issues, last pushed Sep 13, 2026. Figures are from public GitHub metadata via [evalplus's repository](https://github.com/evalplus/evalplus) and [leva's repository](https://github.com/kieranklaassen/leva). | | [evalplus](/tools/evalplus-evalplus.md) | [leva](/tools/kieranklaassen-leva.md) | | --- | --- | --- | | Tagline | Rigorous evaluation of LLM-synthesized code | LLM Evaluation Framework for Rails apps | | Stars | 1,825 | 146 | | Forks | 209 | 7 | | Open issues | 78 | 5 | | Language | Python | Ruby | | Adopt for | evalplus offers tools for rigorously benchmarking and evaluating large language models like GPT-4 and ChatGPT in synthesizing program code using Python under the Apache-2.0 license. | Leva is an LLM evaluation framework for Ruby on Rails apps, aiming to use production data directly in the evaluation process. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | MIT | | Categories | Evaluation & Observability | Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [evalplus](/tools/evalplus-evalplus.md) | [leva](/tools/kieranklaassen-leva.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Active (82%) | | Days since push | 370d | 7d | | Open issues (now) | 78 | 5 | | Stars delta | +19 (30d) | +4 (30d) | | Open issues delta | +4 (30d) | +1 (30d) | | Owner type | Organization | User | | Full report | [trust report](/tools/evalplus-evalplus/trust.md) | [trust report](/tools/kieranklaassen-leva/trust.md) | ## Decision facts: evalplus - **Adopt for:** evalplus offers tools for rigorously benchmarking and evaluating large language models like GPT-4 and ChatGPT in synthesizing program code using Python under the Apache-2.0 license. ## Decision facts: leva - **Adopt for:** Leva is an LLM evaluation framework for Ruby on Rails apps, aiming to use production data directly in the evaluation process. ## Choose when ### Choose evalplus if… - evalplus is primarily Python; leva is Ruby. - License: evalplus is Apache-2.0, leva is MIT. - Tags unique to evalplus: benchmark, chatgpt, efficiency, program-synthesis. - evalplus ships Docker support for self-hosted deployment. - When you need advanced benchmarks specific to large language model generated program synthesis, such as from GPT-4 or ChatGPT. ### Choose leva if… - leva is primarily Ruby; evalplus is Python. - License: leva is MIT, evalplus is Apache-2.0. - Tags unique to leva: llm, llm-evaluation, rails-apps, ruby-on-rails. - You are working with Ruby on Rails applications and need a tool specific to this environment ## When NOT to use evalplus - Avoid if you require broad language model benchmarking that is not specifically focused on program synthesis capabilities. - Do not use evalplus if your project does not benefit from or need Docker-based isolation for code execution safety measures, such as in controlled lab environments without external dependencies. ## When NOT to use leva - If your application is not built using Ruby on Rails, Leva may not be the best fit - For scenarios requiring broader cross-platform support or with non-Rails production data integration needs, consider other tools ## Common questions ### What is the difference between evalplus and leva? evalplus: Rigorous evaluation of LLM-synthesized code. leva: LLM Evaluation Framework for Rails apps. See the comparison table for live GitHub stats and shared categories. ### When should I choose evalplus over leva? Choose evalplus over leva when evalplus is primarily Python; leva is Ruby; License: evalplus is Apache-2.0, leva is MIT; Tags unique to evalplus: benchmark, chatgpt, efficiency, program-synthesis; evalplus ships Docker support for self-hosted deployment; When you need advanced benchmarks specific to large language model generated program synthesis, such as from GPT-4 or ChatGPT. ### When should I choose leva over evalplus? Choose leva over evalplus when leva is primarily Ruby; evalplus is Python; License: leva is MIT, evalplus is Apache-2.0; Tags unique to leva: llm, llm-evaluation, rails-apps, ruby-on-rails; You are working with Ruby on Rails applications and need a tool specific to this environment. ### When should I avoid evalplus? Avoid if you require broad language model benchmarking that is not specifically focused on program synthesis capabilities. Do not use evalplus if your project does not benefit from or need Docker-based isolation for code execution safety measures, such as in controlled lab environments without external dependencies. ### When should I avoid leva? If your application is not built using Ruby on Rails, Leva may not be the best fit For scenarios requiring broader cross-platform support or with non-Rails production data integration needs, consider other tools ### Is evalplus or leva more popular on GitHub? evalplus has more GitHub stars (1,825 vs 146). Stars measure visibility, not whether either tool fits your constraints. ### Are evalplus and leva open source? Yes - both are open-source projects on GitHub (evalplus: Apache-2.0, leva: MIT). ### Where can I find alternatives to evalplus or leva? GraphCanon lists graph-backed alternatives at [evalplus alternatives](/tools/evalplus-evalplus/alternatives) and [leva alternatives](/tools/kieranklaassen-leva/alternatives) ([evalplus markdown twin](/tools/evalplus-evalplus/alternatives.md), [leva markdown twin](/tools/kieranklaassen-leva/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/evalplus-evalplus-vs-kieranklaassen-leva.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, evalplus or leva? evalplus: Dormant. leva: 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 evalplus and leva? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [evalplus trust report](/tools/evalplus-evalplus/trust); [leva trust report](/tools/kieranklaassen-leva/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=evalplus-evalplus`](/api/graphcanon/graph?tool=evalplus-evalplus) - 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/_