“Such a performance is in uncharted territory for any orbital rocket, ever. According to Wikipedia, the Soyuz-U rocket had a streak of 112 consecutive successful launches between July 1990 and May 1996. However this period included the Cosmos 2243 launch in April 1993. This mission should more properly be classified as a failure. According to space scientist Jonathan McDowell, the control system of the rocket failed during the final phase of the Blok-I burn, and the payload was auto-destructed.

Taking this failure into account, the Soyuz-U had a run of 100 successful launches from 1983 to 1986. This happens to be the exact same number of consecutive successes by the Delta II rocket, originally designed and built by McDonnell Douglas and later flown by Boeing and United Launch Alliance. Overall the Delta II rocket launched 155 times, with two failures. Its final flight, in 2018, was the rocket’s 100th consecutive successful mission.”

https://arstechnica.com/space/2023/05/spacex-is-going-for-its-200th-consecutive-falcon-9-success-tonight/

Except that SpaceX, going by last year, has been increasing cadence through the year and has a realistic shot at the 100. Interesting times. What’s missing is another competitor such that we are looking at a race between entities instead of one against the world.