The past decade of experience in the climate finance domain offers both critical lessons and a crucial blueprint for accelerating responsible technology governance, particularly as institutional investors start to grapple with the implications of generative AI deployment across all sectors and industries in much the same way they have for climate risk. This white paper distills insights from extensive stakeholder engagement (including dozens of expert interviews and a series of confidential dialogues convened by Great Circle Capital Advisors and Omidyar Network) to identify the most transferable lessons from climate-related financial disclosures and investor engagement between 2015-25 to the emerging field of responsible AI investing.