Is Ark still free on PC?

Could you please clarify for me, is Ark, the popular open-world survival game, still available for free download on personal computers? I've heard that it was initially offered as a free-to-play title, but I'm unsure if this remains the case. It would be greatly appreciated if you could provide me with the most up-to-date information on Ark's availability and pricing status on PC platforms. Thank you in advance for your assistance.