Anthropic’s coding tool has gained strong momentum, growing from a simple way to help teams write software faster into a product that brings in about $1 billion in run-rate revenue only months after its public launch. As the work around it expands, Anthropic is bringing Bun – the fast JavaScript runtime – into the company to support the next stage of development.
Bun was created in 2021 by Jarred Sumner with the simple goal of making JavaScript run faster without adding extra steps for developers. It combines several tools that usually need to be installed separately.
Developers can run code, manage packages, bundle files, and test projects without juggling different systems. That approach has made Bun popular with teams building AI-heavy applications, where every gain in speed helps.
The tool has also changed how JavaScript and TypeScript developers approach everyday work. Its focus on quick startup times and dependable builds has made it a common choice for people who want fewer delays during development. For teams already using Claude Code, the acquisition points to better performance and added stability. Anthropic plans to keep improving Bun for the wider community while bringing more integrated features into Claude Code itself.
Claude Code’s growth has been quick – what began as an internal idea became a public product in May 2025, and large organisations soon adopted it. Companies like Netflix, Spotify, KPMG, L’Oreal, and Salesforce now depend on it for parts of their software work. Bun has supported this growth from behind the scenes, and both companies have worked together for some time.
Their joint efforts helped Anthropic speed up development work, including the rollout of a native installer for Claude Code. The two teams have aligned goals: make development faster and remove as much friction as possible.
“Bun represents exactly the kind of technical excellence we want to bring into Anthropic,” said Mike Krieger, Chief Product Officer of Anthropic. “Jarred and his team rethought the entire JavaScript toolchain from first principles while remaining focused on real use cases. Claude Code reached $1 billion in run-rate revenue in only 6 months, and bringing the Bun team into Anthropic means we can build the infrastructure to compound that momentum and keep pace with the rapid growth in AI adoption.”
Bun’s strong uptake shows why Anthropic sees value in it. The project gets more than seven million downloads each month and has tens of thousands of GitHub stars. Companies like Midjourney and Lovable use it to move faster during development.
Anthropic says the deal fits into a broader plan to strengthen its technical base.Bun will remain open source under the MIT licence, and Anthropic intends to keep improving it as a default choice for JavaScript and TypeScript developers.
Anthropic’s plans beyond its coding products
Anthropic also drew attention this week for a separate reason. The Financial Times reported that the company has hired Wilson Sonsini, a well-known law firm, to advise on preparations for a possible public offering as early as 2026. Neither the firm nor Anthropic responded to Reuters when asked for comment.
Going public could give the company a new way to raise money and more room to pursue bigger deals. The report comes at a time when investment in AI remains strong and companies continue to spend more on related tools. According to the FT, Anthropic has also spoken with major banks, though these early talks are still informal.
“It’s fairly standard practice for companies operating at our scale and revenue level to effectively operate as if they are publicly traded companies,” an Anthropic spokesperson told the FT. “We haven’t made any decisions about when or even whether to go public, and don’t have any news to share at this time.”
The FT also said the company is negotiating a private funding round that may value it at more than $300 billion.
OpenAI, backed by Microsoft, is on a similar path. Reuters has reported that the company is preparing for a potential listing as soon as the second half of 2026, which could place its valuation near $1 trillion. Even so, OpenAI’s chief financial officer, Sarah Friar, said in November that an IPO is not planned in the near future.
(Photo by Bluestonex)
See also: AI is changing what it means to be a software engineer
Want to dive deeper into the tools and frameworks shaping modern development? Check out the AI & Big Data Expo, taking place in Amsterdam, California, and London. Explore cutting-edge sessions on machine learning, data pipelines, and next-gen AI applications. The event is part of TechEx and co-located with other leading technology events. Click here for more information.
DeveloperTech News is powered by TechForge Media. Explore other upcoming enterprise technology events and webinars here.