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The best Power BI audit tools in 2026
If you need to judge the health of a Power BI file you did not build, these are the real options. We make one of them, and we will tell you honestly when one of the others is the better fit.
Nexlytics
Best for: A fast, scored verdict on a whole .pbix with a client-ready PDF
Upload a .pbix, get a health score and risk-contextualized issue list in about 90 seconds. Browser-only, no install. Built on the framework Onwards Analytics has used on tier-one metals and mining Power BI environments for twelve years.
Browser, no install · $9 per report, $29/mo, $290/yr
MeasureKiller
Best for: Deep, rules-based model cleanup inside Power BI Desktop
A production-grade analyzer for unused measures, columns, tables, lineage and RLS, from a Microsoft MVP. Strong enterprise pedigree. It is a tool you operate inside Desktop, not a verdict you hand to a manager, and the individual price band is empty.
Desktop install · Free desktop / enterprise from ~$108 per user/mo
Nexlytics vs MeasureKiller →Tabular Editor
Best for: Deep model editing and scriptable Best Practice Analyzer rules
The developer standard for editing a Power BI model and running Best Practice Analyzer rules against it. Powerful and scriptable. It is a tool you operate and configure, not a scored verdict for the person who manages the report.
Desktop install · Free (TE2) / paid TE3 per user
Nexlytics vs Tabular Editor →DAX Studio
Best for: Surgical query and measure performance debugging
Free and the gold standard for performance work: server timings, query plans, VertiPaq Analyzer. Indispensable for the builder optimising a slow query. It tunes one query rather than judging the health of the whole file.
Desktop install · Free
Nexlytics vs DAX Studio →ChatGPT or Gemini
Best for: Explaining or rewriting a single DAX formula you paste in
Excellent at explaining or rewriting a formula you paste in. Neither can open a .pbix, read the model, or scan it for issues you did not know to ask about. Useful alongside an audit, not instead of one.
Browser, no install · Free / ~$20 per month
Nexlytics vs ChatGPT or Gemini →Copilot for Power BI
Best for: Building reports and authoring measures inside your own tenant
Native and strong for building inside Power BI: generating measures, narratives, and Q&A. It helps the builder inside their own licensed tenant rather than handing an external reviewer a scored audit of an inherited file.
In Power BI / Fabric · Requires Fabric capacity / Power BI licensing
Nexlytics vs Copilot for Power BI →