Official statement from Gamaleya Institute:

Sputnik V has demonstrated 3-7x less of a reduction in virus neutralizing activity against Omicron as compared to data from other vaccine producers: 11.8 times decrease of VNA for Sputnik V in contrast with 41 times decrease for Pfizer-BioNTech (according to the study led by scientists from Africa Health Research Institute published on Dec 7, 2021) 49-84 times decrease for Moderna (according to the study published by research group from scientific institutes including Vaccine Research Center on Dec 15, 2021).

So far, Sputnik V is showing the best virus neutralization results against Omicron in comparison with other vaccines.

https://sputnikvaccine.com/newsroom/...ther-strength/