OpenAI and Anthropic rivalry grows more public in 2026

In short: OpenAI and Anthropic, two leading AI chatbot companies, are turning a long-running rivalry into a more public fight.

What's going on

Anthropic was founded in 2020 to 2021 by former OpenAI researchers, including CEO Dario Amodei, after disagreements about how fast to release AI and how to make money from it. OpenAI, led by Sam Altman, has generally pushed faster releases and wider commercial use. Anthropic has presented itself as more cautious, with more limits on certain uses.

That split has become more visible in public. The New York Times points to moments like Altman and Amodei appearing at the same events but not greeting each other, and reports that tensions are personal as well as business.

In 2026, one of the clearest flashpoints is advertising inside chatbots. OpenAI has been testing ads in ChatGPT, while saying advertisers will not get access to private conversations. Anthropic ran Super Bowl ads for its chatbot Claude promising it will not show ads, framing the choice as a matter of user privacy (like not reading your diary to sell you things).

The rivalry also shows up in government work. Reports say Anthropic pushed for Pentagon contract terms that limited certain military uses, and talks fell apart. Soon after, OpenAI announced its own Pentagon deal, and Amodei later criticized Altman over the timing.

What to watch

This conflict is likely to keep spilling into public view as both companies race to win big business customers and possibly go public with stock listings. Watch for more direct comparisons in marketing, more disputes about military contracts, and continued arguments over what “responsible AI” should mean in practice.

Source: NYTimes