Two links from 2013 examining funding links of the @HRF and the associated OFF : https://truthout.org/articles/using-human-rights-for-right-wing-politics/ > The story of the Oslo Freedom Forum is also a story of US right-wing sponsorship, lack of transparency and “heroes of human rights” involved in supporting serious human rights violations. The truthout article references this earlier 2013 piece by Max Blumenthal : https://electronicintifada.net/content/oslo-freedom-forum-founders-ties-islamophobes-who-inspired-mass-killer-anders-breivik/12451 As for amount of funding provided by Thiel, a BuzzFeed article states it as at least $900,000 to the HRF, but it is BuzzFeed so not sure about the accuracy. Thiel is also acknowledged on the OFF website as a founding funder (separate to his funding of the HRF) and organiser of the initial conference.

BuzzFeed News

Oslo Freedom Forum Founder Says Thiel "Has Every Right" To Fund Media Lawsuits

The foundation that puts on the annual gathering of dissidents and journalists has received at least $900,000 in funding from the tech billionaire.

Not enough scrutiny of the HRF/OFf, its backers and its funding sources has been done since those early 2013 articles I linked above.

The Blumenthal piece puts Thiel's finding of the @HRF at $535,000 so you may prefer to use that figure over the higher BuzzFeed figure