OpenAI and Anthropic May Be Rivals, but Investors Aren’t Picking Sides
OpenAI and Anthropic share a strikingly large pool of investors, despite competing for talent, customers, and influence.
Intelligence analysis by GPT-5.4 Mini
WIRED reports that roughly 90 venture firms and other money managers have invested in both OpenAI and Anthropic, suggesting many backers do not expect AI to be a winner-take-all market. The overlap is especially notable as both companies move toward major fundraises and possible public listings.
Two big AI companies are like rival teams, but many of the same people are cheering for both teams at once. That means a lot of investors think more than one AI company can win, instead of only one.
Analysis
Shared backers
WIRED’s analysis of PitchBook data finds that about 90 venture firms and other money managers have invested in both OpenAI and Anthropic over the past few years. That means OpenAI shares about 42% of its investors with Anthropic, while roughly a third of Anthropic’s investors also back OpenAI. The overlap includes well-known firms such as Sequoia Capital, Greylock, Founders Fund, Redpoint Ventures, Emerson Collective, and Sound Ventures.
Why this is unusual
The article frames this as striking because OpenAI and Anthropic are direct competitors. They have fought over workers, customers, public attention, and policy positions. Historically, venture firms often avoid backing rival companies in the same category to reduce conflicts of interest. But several people quoted in the story say the scale of these AI companies has changed the calculus.
Tom Nicholas of Harvard Business School says the ownership structure suggests many investors do not believe AI will be a simple winner-take-all market, or are unsure which company would dominate if it is. PitchBook’s Kyle Stanford adds that large investors may be trying to preserve upside across the market rather than pick a single horse.
What changed
The article says the venture industry has evolved as funds have grown larger, companies stay private longer, and startups raise more money. OpenAI and Anthropic have each raised well over $100 billion at valuations approaching $1 trillion. At that scale, a single investor’s stake may be too small for conflict concerns to matter as much, especially for hedge funds, private equity firms, and wealth managers that naturally spread capital across multiple bets.
The article also notes that both companies are aiming for stock market debuts, which gives investors another reason to hold positions in both. The piece closes by comparing the pattern to earlier cross-investment in ridesharing, but says the AI overlap is broader and more intense than that precedent.
Key points
- About 90 investors have backed both OpenAI and Anthropic, according to WIRED’s analysis of PitchBook data.
- OpenAI shares about 42% of its investors with Anthropic, while roughly a third of Anthropic investors also back OpenAI.
- The overlap is unusual because the two labs compete directly and have taken different positions on policy and industry issues.
- Experts quoted in the article say many investors do not expect AI to be a simple winner-take-all market.
- The pattern may reflect larger funds, longer private-company lifecycles, and the prospect of future IPO gains.
If the article’s reading is right, shared investors could give both companies access to more capital and patience as they scale. That may help keep competition strong while still funding major AI development and future public listings.
The overlap could create awkward conflicts if investors sit on both sides of rival companies that share sensitive information or compete for the same customers and talent. It may also weaken the incentive for backers to push any one company to stand out, since many are already hedging across the field.
