--- title: "scalene vs frai" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/plasma-umass-scalene-vs-sebuzdugan-frai" tools: ["plasma-umass-scalene", "sebuzdugan-frai"] --- # scalene vs frai *GraphCanon updated Aug 9, 2026* ## Verdict Pick scalene if scalene is a high-performance CPU, GPU, and memory profiler for Python that uses AI to suggest optimizations; pick frai if frai is an open-source toolkit that uses CLI and SDK to scan code for responsible AI development purposes, generating model cards, risk assessments, and evaluations. [scalene](https://github.com/plasma-umass/scalene) reports 13k GitHub stars, 435 forks, and 151 open issues, last pushed Aug 1, 2026. [frai](https://frai.cc/) has 53 stars, 4 forks, and 0 open issues, last pushed Aug 5, 2026. Figures are from public GitHub metadata via [scalene's repository](https://github.com/plasma-umass/scalene) and [frai's repository](https://github.com/sebuzdugan/frai). | | [scalene](/tools/plasma-umass-scalene.md) | [frai](/tools/sebuzdugan-frai.md) | | --- | --- | --- | | Tagline | High-performance CPU, GPU, and memory profiler for Python with AI-powered optimization | A toolkit for responsible AI development that generates model cards, risk assessments, and evals via CLI and SDK. | | Stars | 13,485 | 53 | | Forks | 435 | 4 | | Open issues | 151 | 0 | | Language | Python | JavaScript | | Adopt for | Scalene is a high-performance CPU, GPU, and memory profiler for Python that uses AI to suggest optimizations. | frai is an open-source toolkit that uses CLI and SDK to scan code for responsible AI development purposes, generating model cards, risk assessments, and evaluations. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | MIT | | Categories | Evaluation & Observability | Developer Tools, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [scalene](/tools/plasma-umass-scalene.md) | [frai](/tools/sebuzdugan-frai.md) | | --- | --- | --- | | Days since push | 2d | 3d | | Open issues (now) | 151 | 0 | | Owner type | Organization | User | | Full report | [trust report](/tools/plasma-umass-scalene/trust.md) | [trust report](/tools/sebuzdugan-frai/trust.md) | ## Decision facts: scalene - **Adopt for:** Scalene is a high-performance CPU, GPU, and memory profiler for Python that uses AI to suggest optimizations. ## Decision facts: frai - **Adopt for:** frai is an open-source toolkit that uses CLI and SDK to scan code for responsible AI development purposes, generating model cards, risk assessments, and evaluations. ## Choose when ### Choose scalene if… - scalene is primarily Python; frai is JavaScript. - License: scalene is Apache-2.0, frai is MIT. - Tags unique to scalene: cpu-profiling, gpu-programming, memory-allocation, profiler. - When you need precise profiling of both CPU and GPU performance in Python applications ### Choose frai if… - frai is primarily JavaScript; scalene is Python. - License: frai is MIT, scalene is Apache-2.0. - Tags unique to frai: ai-compliance, audit, bias, evaluation. - Also covers Developer Tools. - Use when you need to comply with specific safety standards in AI projects using JavaScript framework. ## When NOT to use scalene - If your project does not involve Python, as Scalene is specific to this language - Avoid if your system lacks necessary dependencies like Visual C++ Redistributable on Windows ## When NOT to use frai - Avoid if your development environment strictly requires non-JavaScript languages for tool integration. - Not advisable if automated governance and scanning tools are not aligned with organizational compliance policies. ## Common questions ### What is the difference between scalene and frai? scalene: High-performance CPU, GPU, and memory profiler for Python with AI-powered optimization. frai: A toolkit for responsible AI development that generates model cards, risk assessments, and evals via CLI and SDK.. See the comparison table for live GitHub stats and shared categories. ### When should I choose scalene over frai? Choose scalene over frai when scalene is primarily Python; frai is JavaScript; License: scalene is Apache-2.0, frai is MIT; Tags unique to scalene: cpu-profiling, gpu-programming, memory-allocation, profiler; When you need precise profiling of both CPU and GPU performance in Python applications. ### When should I choose frai over scalene? Choose frai over scalene when frai is primarily JavaScript; scalene is Python; License: frai is MIT, scalene is Apache-2.0; Tags unique to frai: ai-compliance, audit, bias, evaluation; Also covers Developer Tools; Use when you need to comply with specific safety standards in AI projects using JavaScript framework. ### When should I avoid scalene? If your project does not involve Python, as Scalene is specific to this language Avoid if your system lacks necessary dependencies like Visual C++ Redistributable on Windows ### When should I avoid frai? Avoid if your development environment strictly requires non-JavaScript languages for tool integration. Not advisable if automated governance and scanning tools are not aligned with organizational compliance policies. ### Is scalene or frai more popular on GitHub? scalene has more GitHub stars (13,485 vs 53). Stars measure visibility, not whether either tool fits your constraints. ### Are scalene and frai open source? Yes - both are open-source projects on GitHub (scalene: Apache-2.0, frai: MIT). ### Where can I find alternatives to scalene or frai? GraphCanon lists graph-backed alternatives at [scalene alternatives](/tools/plasma-umass-scalene/alternatives) and [frai alternatives](/tools/sebuzdugan-frai/alternatives) ([scalene markdown twin](/tools/plasma-umass-scalene/alternatives.md), [frai markdown twin](/tools/sebuzdugan-frai/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/plasma-umass-scalene-vs-sebuzdugan-frai.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, scalene or frai? scalene: Very active. frai: 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 scalene and frai? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [scalene trust report](/tools/plasma-umass-scalene/trust); [frai trust report](/tools/sebuzdugan-frai/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=plasma-umass-scalene`](/api/graphcanon/graph?tool=plasma-umass-scalene) - 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/_