Canon revealed details ofthe Canon EOS R1 and the Canon EOS R5 Mark IIin a press release on Wednesday.
B&H Photography
That’s not where the differences end, however.
This explains why the EOS R1 can shoot slightly faster than the EOS R5 Mark II.

Canon EOS R1 Flagship Camera.B&H Photography
The EOS R5 Mark II can capture video up to 8K, whereas the EOS R1 can reach 6K.
The pricing on both models reflects this.