Rigetti Computing

Rigetti just made its Cepheus 1 108Q system available to customers, tripling the qubit count of the 36 qubit machine it shipped in 2025. It is built from twelve linked 9 qubit chiplets, like snapping Lego bricks together. It is also the first machine of its kind with more than 100 qubits on Amazon's quantum cloud. Showing that this stitching approach still works past 100 qubits matters because scaling up is the hardest problem in quantum computing.

The new system gets its trickiest moves right 99.1% of the time and finishes each one in about 60 billionths of a second. The company says that is 1,000 to 10,000 times faster than rival designs. On a smaller test machine, Rigetti has already reached 99.9% accuracy in just 28 billionths of a second, using a technique that already runs on the big system. In a race where tiny errors pile up fast, being both quick and precise is what turns a lab experiment into a real tool.

Better hardware has not turned into money yet. Revenue for 2025 fell 34%, from about 10.8 million dollars to roughly 7.1 million. Even after the stock cooled off, the company is still valued near 4 billion dollars. That is more than 500 times what it actually sells in a year.

Rigetti says quantum computers are still about 3 years from beating regular computers, which is the milestone that would unlock real demand. It released the 108 qubit machine at 99.1% accuracy, short of its 99.5% goal. It also says its biggest hurdle now is how long its qubits can hold information before it fades. A new roadmap is promised later this year, so investors are waiting on both the plan and the payoff.