The Prime Minister's office calls it a commercial investment: Canada gets equity in Cohere, made in stages, with regular reporting against commitments. Other investors in the round include NVIDIA, Bell and Schwarz Group.
In return, Cohere commits to create at least 1,000 Canadian technical jobs by 2030, spend at least C$1.7 billion on more computing infrastructure in Canada by 2030, keep its Canadian incorporation and headquarters, fund research partnerships in Canada, and keep working with the Canadian AI Safety Institute. The release also mentions Cohere's recent merger with Aleph Alpha.
The government release doesn't give the total size of the round or a valuation, and we didn't find a primary source for either.

