About QubitRank

What we do

• Rankings, race by race. Who leads on accuracy, error correction, size, speed and what you can use today. There's never a single "best" machine. See the rankings.
• Reality Checks. We take a big claim and set out what was claimed, what was actually shown, what it doesn't show, and why it matters. Read them.
• Breaking news, labelled by how far the evidence has got: announced, published, peer-reviewed, independently repeated, or disputed.
• Company profiles and roadmaps, including whether companies deliver what they promise. See the tracker.
• The QubitRank Monthly, a free email with the month's rankings, movers and the claim worth checking.

Where our numbers come from

Every rank is built from QubitBenchmark, our sister site, which records each published quantum-computer result with its source, dates, who measured it and an evidence grade. QubitRank explains what the results mean; QubitBenchmark shows what supports them. How we rank sets out the rules.

Independence

• No company can pay to be listed, ranked or placed higher.
• QubitRank is free to read. We don't run advertising.
• Rankings describe technology, not investments, and aren't financial advice.

How we work

We use AI tools to help gather published results, research companies and draft articles. Every fact must trace back to a source anyone can open, and a person reviews and approves every page before it's published. If we get something wrong, we correct it openly and note the change on the page.

Get in touch

Spotted an error, or have a result we should know about? Contact us.