Accel, formerly known as Accel Partners, is an American global venture capital firm with offices in Palo Alto and San Francisco, California, as well as London and India. The firm invests in enterprise, SaaS, and consumer companies at seed, early, and growth stages worldwide. Accel is best known for its $12.7 million investment in Facebook in May 2005, which purchased a 10% stake before the company had any revenue, a deal that became one of the most lucrative in venture capital history.
History
Accel was founded in 1983 by Arthur Patterson and Jim Swartz. The co-founders developed the firm's "prepared mind" investment philosophy, inspired by Louis Pasteur's quote "chance favors the prepared mind," which they said requires "deep focus" and a disciplined, informed approach to investing.
In 2000, Accel and Kohlberg Kravis Roberts formed Accel-KKR, an independently operated technology-focused private equity firm specializing in control investments in middle-market companies. That same year, Accel partnered with IDG Capital to create IDG-Accel, a joint venture targeting early-stage and growth investments in the Chinese market.
In May 2005, under the leadership of Jim Breyer, Accel invested $12.7 million for 10% of Facebook, before the company had revenue. This investment was worth $6.6 billion at the time of Facebook's initial public offering in 2012.
Investments and Fundraises
In December 2019, Accel raised $550 million for its sixth investment fund focused on India. In May 2024, the firm raised a $650 million fund to invest in early-stage companies across Europe and Israel, with a focus on artificial intelligence and computer security. Fundraising was facilitated in part by the establishment of Accel's London office in 2000. In January 2025, Accel raised a $650 million early-stage fund for startups in India and Southeast Asia, its eighth India-focused fund.
Focus on Artificial Intelligence
Accel has increasingly directed its investments toward AI startups, particularly in areas such as machine learning, deep learning, and generative AI. The firm has backed companies developing large language models, neural networks, and transformer architectures. Notable portfolio companies in the AI space include OpenAI, Anthropic, and Inflection AI, though specific investment details are not always publicly disclosed.
Accel's AI investments span infrastructure and applications, including Amazon Web Services partners and Google Cloud ecosystem players. The firm has also shown interest in AI21 Labs and Essential AI, reflecting a broad strategy across the AI value chain.
Global Presence and Strategy
Accel operates with a global footprint, leveraging its offices in Palo Alto, San Francisco, London, and India to source deals and support portfolio companies. The firm's strategy emphasizes early-stage investments, often leading seed and Series A rounds, while also participating in growth-stage financing. Accel's "prepared mind" philosophy guides its focus on sectors where deep domain expertise can identify transformative technologies, particularly in enterprise software, SaaS, and consumer internet.
The firm's London office, established in 2000, has been instrumental in expanding its European and Israeli deal flow, especially in AI and cybersecurity. In India, Accel has built a strong presence through multiple dedicated funds, backing startups in e-commerce, fintech, and SaaS. As of 2025, Accel continues to raise new funds and deploy capital across its key markets, with AI remaining a central theme in its investment thesis.