About
What this is, and what it isn’t.
The Kardashev Index ranks companies and other entities on a 0–10 scale in Kardashev terms: how much energy and compute they command, how fast that is growing, and — clearly labelled as opinion — how much they push the frontier. It is an independent, experimental project.
How scores are made
- 01Mostly measured. 65% of the weight comes from figures companies report about themselves (energy, data-center capacity, capital spending), computed in code. Every figure links to the source page and the verbatim quote it came from.
- 02Opinion, labelled. 35% of the weight is editorial judgement scored against written rubrics, marked “Opinion” wherever it appears.
- AIAI-assisted. An AI model — currently xAI’s Grok (grok-4.3) — searches for sources, copies figures and quotes out of them, and scores the opinion categories. Its output is checked in code (quotes must appear verbatim in pages we fetched; numbers, units and magnitudes are validated) and all arithmetic is done in code. Individual scores are not reviewed by a human before publication; admins approve which entities are listed and can re-run them.
- %Measured vs opinion share. Because missing data is never filled in, the share of a given entity’s score that is measured can differ from the nominal split. The leaderboard and each entity page show the measured share of what was actually scored.
Full details: methodology.
Conflict-of-interest disclosure
The scoring model is made by xAI, and xAI is itself one of the entities ranked here. To limit the effect: measured categories are computed in code from quoted, verified figures, not from the model’s opinion; opinion categories must cite verified quotes and follow the same rubrics for every entity; and every score shows its sources and rationale so you can check it. You should still read xAI’s placement — and that of its competitors — with this in mind. The project receives no payment from any ranked entity.
Not investment advice
Nothing on this site is financial, investment, legal or other professional advice, or a recommendation to buy or sell any security. Scores are an experimental, partly AI-generated assessment and may be incomplete, out of date or wrong. Do your own research.
Corrections
If a figure, quote or source is wrong — including on your own company’s page — tell us which entity and what is wrong, ideally with a link to a primary source: a corrections address will be published here before launch. Confirmed errors are fixed by correcting the data and re-running the entity; every run is kept and its date is shown on the entity page.
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License
Scores licensed CC BY-NC 4.0 from version 0.15.0 onward. The published scores, data and methodology text may be shared and adapted for non-commercial purposes with credit, for example “Kardashev Index, CC BY-NC 4.0” with a link to this site. Full terms: CC BY-NC 4.0 legal code.
Content published by versions 0.5.0 through 0.14.0 was licensed under CC BY 4.0 (legal code); those grants stand for that content.
Commercial licensing. Commercial use, bulk or automated access (scraping, mirroring or systematic downloading of the site or its JSON endpoints) and resale or redistribution of the data require a separate license. Contact: a corrections address will be published here before launch.
Facts and figures quoted from company reports, filings and web pages belong to their publishers and are shown as citations; they are not covered by this license. Company names and logos are their owners’ trademarks.
The source code is MIT licensed. Third-party assets (htmx, Google Fonts under the SIL Open Font License) are listed in NOTICE.md.