The OKB built a single static/fatigue test airframe, as well as four flying prototypes (callsigns 30, 50, 80 and 90).
Two Yak-32's were also assembled at the same time.

Factory testing took place from 20 May 1960 through March 1961.
A total of 82 flights were made with 43 hours 36 minutes of flight time.
No difficulties in operating the aircraft were found.

The competition ultimately came down to three aircraft, the rivals being the Czechoslovak L-29 Delfin, and the Polish TS-11 Iskra.
The Iskra was quickly eliminated and sent back to Poland, leaving the Yak-30 in a head-to-head competition with the L-29, in which the Yak design showed far better performance, including lower weight, better maneuverability and lower production costs.
However, in the end, a political decision was reached to select the more robust Czechoslovak L-29 in August 1961 to serve as the primary jet trainer for all Soviet and Warsaw Pact nations except for Poland.
Immediately after this decision OKB pilot Smirnov set several official light jet world records in the Yak-30.

These included speed over a 25 kilometer course  (767.308 km/h), and maximum altitude of 16,128 meters.

One of the surviving prototypes is on display at the Central Air Force Museum, at Monino, outside of Moscow.
The OKB built a single static/fatigue test airframe, as well as four flying prototypes (callsigns 30, 50, 80 and 90). Two Yak-32's were also assembled at the same time. 
Factory testing took place from 20 May 1960 through March 1961. A total of 82 flights were made with 43 hours 36 minutes of flight time. No difficulties in operating the aircraft were found.
The competition ultimately came down to three aircraft, the rivals being the Czechoslovak L-29 Delfin, and the Polish TS-11 Iskra. The Iskra was quickly eliminated and sent back to Poland, leaving the Yak-30 in a head-to-head competition with the L-29, in which the Yak design showed far better performance, including lower weight, better maneuverability and lower production costs. However, in the end, a political decision was reached to select the more robust Czechoslovak L-29 in August 1961 to serve as the primary jet trainer for all Soviet and Warsaw Pact nations except for Poland. Immediately after this decision OKB pilot Smirnov set several official light jet world records in the Yak-30.
These included speed over a 25 kilometer course  (767.308 km/h), and maximum altitude of 16,128 meters.
One of the surviving prototypes is on display at the Central Air Force Museum, at Monino, outside of Moscow.
Yakovlev Yak-30 (1960)