Key Takeaways
- • Amazon has invested at least $13 billion in Anthropic and agreed in April to invest up to an additional $20 billion, while Anthropic committed to spend more than $100 billion on Amazon's cloud services over 10 years.
- • Alphabet's Google has committed up to $40 billion to Anthropic, including an initial $10 billion investment announced in April, tied to cloud infrastructure and access to Google's AI chips.
- • Lightspeed, Fidelity, ICONIQ, GIC, Coatue, Sequoia, Altimeter, and D1 Capital are among the institutional and venture investors that led or co-led Anthropic's later financing rounds, including the $65 billion Series H at a $965 billion valuation.
- • Anthropic's initial public offering is described by Reuters as a closely watched test of whether investors beyond Silicon Valley share the enthusiasm that has driven its valuation higher.
Summary
According to a Reuters factbox published October 26, Anthropic, the company behind the Claude models, has attracted some of the largest names in technology and finance through successive funding rounds, driving a sharp rise in its valuation. The company's initial public offering is now viewed as a key test of whether investors outside Silicon Valley share that enthusiasm for leaders of the AI boom.
Amazon is the most significant strategic backer, having invested at least $13 billion and agreed in April to invest up to an additional $20 billion. Anthropic has committed to spend more than $100 billion on Amazon Web Services over ten years. Alphabet's Google has committed up to $40 billion, including an initial $10 billion investment announced in April. That partnership supplies Anthropic with cloud infrastructure and access to Google's AI chips, which are used to train and run Claude models.
Financial and venture investors have played leading roles across funding rounds. Spark Capital led the $450 million Series C round in May 2023 and gained board representation through general partner Yasmin Razavi. Lightspeed Venture Partners led the $3.5 billion Series E round in March 2025 and later co-led the $13 billion Series F round at a $183 billion valuation in September of that year. Fidelity Management & Research participated in Series E and co-led the Series F. ICONIQ led the Series F and later co-led the $30 billion Series G financing. GIC, Singapore's sovereign wealth fund, led the Series G at a $380 billion valuation. Coatue led the Series G and later co-led the $65 billion Series H round. D1 Capital Partners invested across Series E through Series H, and Sequoia Capital was a significant Series G investor and became one of the lead investors in the Series H at a $965 billion valuation. Altimeter Capital invested in the September 2025 $13 billion fundraise and was a lead investor in the Series H.
Earlier backers include Skype co-founder Jaan Tallinn, who led Anthropic's first institutional financing, a $124 million Series A round in 2021, and former Google chief executive Eric Schmidt, who has invested personally. Salesforce Ventures participated in the Series C and Series E rounds, and Menlo Ventures participated in late-stage financings including the $3.5 billion Series E at a $61.5 billion valuation.
Amazon is the most significant strategic backer, having invested at least $13 billion and agreed in April to invest up to an additional $20 billion. Anthropic has committed to spend more than $100 billion on Amazon Web Services over ten years. Alphabet's Google has committed up to $40 billion, including an initial $10 billion investment announced in April. That partnership supplies Anthropic with cloud infrastructure and access to Google's AI chips, which are used to train and run Claude models.
Financial and venture investors have played leading roles across funding rounds. Spark Capital led the $450 million Series C round in May 2023 and gained board representation through general partner Yasmin Razavi. Lightspeed Venture Partners led the $3.5 billion Series E round in March 2025 and later co-led the $13 billion Series F round at a $183 billion valuation in September of that year. Fidelity Management & Research participated in Series E and co-led the Series F. ICONIQ led the Series F and later co-led the $30 billion Series G financing. GIC, Singapore's sovereign wealth fund, led the Series G at a $380 billion valuation. Coatue led the Series G and later co-led the $65 billion Series H round. D1 Capital Partners invested across Series E through Series H, and Sequoia Capital was a significant Series G investor and became one of the lead investors in the Series H at a $965 billion valuation. Altimeter Capital invested in the September 2025 $13 billion fundraise and was a lead investor in the Series H.
Earlier backers include Skype co-founder Jaan Tallinn, who led Anthropic's first institutional financing, a $124 million Series A round in 2021, and former Google chief executive Eric Schmidt, who has invested personally. Salesforce Ventures participated in the Series C and Series E rounds, and Menlo Ventures participated in late-stage financings including the $3.5 billion Series E at a $61.5 billion valuation.
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