Based on Soviet archival data, 335 Soviet MiG-15s are known to have been admitted as lost over Korea.[57] Chinese claims of their losses amount to 224 MiG-15s over Korea.[19] North Korean losses are not known, but according to North Korean defectors their air force lost around 100 MiG-15s during the war.[58] Thus a total of 659 MiG-15s are admitted as being lost by all causes, while USAF claims of their losses amount to 78 F-86 Sabres in air-to-air combat.[59] Overall UN losses to MiG-15s are credited as 78 F-86 Sabres and 75 aircraft of other types.[59] However, one modern source claims that the USAF has more recently cited 224 losses (circa 100 to air combat) out of 674 F-86s deployed to Korea.[60] Conversely, data-matching with Soviet records shows that US pilots routinely attributed their own combat losses to "landing accidents" and "other causes".[61] According to official US data ("USAF Statistical Digest FY1953"), the USAF lost 250 F-86 fighters in Korea: 184 were lost in combat (78 in air-combat, 19 by Anti-aircraft gun, 26 were "unknown causes" and 61 were "other losses") and 66 in incidents.</ref>[62]
More recent research by Dorr, Lake and Thompson has claimed the actual ratio is closer to 2 to 1.[63] The Soviets claimed to have downed over 600 Sabres,[64] together with the Chinese claims.[65] A recent RAND report[66] made reference to "recent scholarship" of F-86 v MiG-15 combat over Korea and concluded that the actual kill:loss ratio for the F-86 was 1.8 to 1 overall, and likely closer to 1.3 to 1 against MiGs flown by Soviet pilots.[57] However, this ratio were not count the number of aircraft of other types (B-29, A-26, F-80, F-82, F-84...) were shot down by MiG-15s.