Anthropic eyes $300 million Stainless acquisition as it chases $900 billion valuation
2 Sources
[1]
Anthropic in talks to buy AI tools startup Stainless for over $300 million: The Information
AI firm Anthropic is reportedly in advanced talks to buy Stainless for over $300 million. Stainless builds software for easier AI model access. This comes as Anthropic also explores raising at least $30 billion in new funding. The company's valuation could exceed $900 billion. Anthropic is in advanced talks to acquire Stainless for more than $300 million, according to a report by The Information on Wednesday. The deal has not yet been finalised, and the terms could still change. Part of the payment may also be made using Anthropic shares, the report added. Founded in early 2022 by Alex Rattray, Stainless builds software that helps developers access and use artificial intelligence models more easily. Its customers include Anthropic, OpenAI and Google. If the deal goes through, Anthropic would take ownership of a major tool that developers use to access AI models from companies such as OpenAI and Google. Demand for Stainless' tools has reportedly grown alongside the rise of AI agents such as Claude Code and OpenCode. OpenAI had previously developed its own software development kit, but later adopted Stainless' tools because maintaining the system internally became difficult and resource-heavy. Stainless has also built software linked to Model Context Protocol (MCP), a framework launched by Anthropic in November 2024. This comes as Bloomberg reported on Wednesday that Anthropic is in early discussions with investors to raise at least $30 billion in fresh funding. The report said the round could value the company at more than $900 billion, excluding the investment itself. That would be more than double Anthropic's reported $380 billion valuation from its February funding round. Bloomberg added that discussions are ongoing, and no formal agreement or term sheet has yet been signed. Founded in 2021 by former OpenAI employees, Anthropic has emerged as one of the leading companies in the AI industry. It has developed a range of AI products focused on tasks such as coding and cybersecurity.
[2]
Anthropic in talks to buy dev tools startup for $300 mln- The Information By Investing.com
Investing.com-- Anthropic is in advanced talks to buy developer tools startup Stainless for at least $300 million, The Information reported on Tuesday, citing a person with knowledge of the deal. The startup sells software to artificial intelligence model makers including Anthropic, OpenAI, and Google, that helps developers more quickly access AI models. Get more breaking news on the biggest AI firms by subscribing to InvestingPro Stainless' software can also be used by AI agents, and has seen growing demand in recent months with the increasing popularity of agents such as OpenClaw. Anthropic's potential acquisition of Stainless also comes amid a greater focus by the startup on AI for enterprise and business applications- a move that is viewed as highly lucrative for the company. The company is targeting a $900 billion valuation in a massive new funding round, Bloomberg reported earlier on Tuesday, more than twice its $380 billion valuation during a funding round in February.
Share
Copy Link
Anthropic is in advanced talks to acquire Stainless, a developer tools startup, for over $300 million. The AI startup builds software to facilitate easier access to AI models for companies like OpenAI and Google. This move comes as Anthropic pursues a massive new funding round targeting a $900 billion valuation.
Anthropic in talks to buy Stainless for over $300 million
Anthropic is pursuing one of its most strategic moves yet, with advanced discussions underway to acquire Stainless, a developer tools startup that has become essential infrastructure for the AI industry
1
. The Stainless acquisition would cost the AI firm more than $300 million, though the deal has not yet been finalized and terms could still change1
. Part of the payment may be made using Anthropic shares, according to The Information1
.
Source: ET
Strategic control over critical AI model developer infrastructure
Founded in early 2022 by Alex Rattray, Stainless builds software to facilitate easier access to AI models, serving major customers including Anthropic, OpenAI, and Google . If the deal goes through, Anthropic would take ownership of a major tool that developers use to access AI models from companies such as OpenAI and Google
1
. This positions the AI startup to control critical infrastructure that competitors currently rely on, raising questions about how Anthropic might leverage this advantage in the increasingly competitive AI landscape.Growing demand driven by AI agents and enterprise applications
Demand for Stainless' tools has surged alongside the rise of AI agents such as Claude Code and OpenCode
1
. The software can be used by AI agents and has seen growing demand in recent months with the increasing popularity of agents such as OpenClaw2
. OpenAI had previously developed its own software development kit but later adopted Stainless' tools because maintaining the system internally became difficult and resource-heavy1
. Stainless has also built software linked to Model Context Protocol (MCP), a framework launched by Anthropic in November 20241
. The potential acquisition aligns with Anthropic's greater focus on AI for enterprise and business applications, a move viewed as highly lucrative for the company2
.Related Stories
Massive new funding round targets $900 billion valuation
The acquisition talks coincide with Anthropic's pursuit of at least $30 billion in a new funding round that could value the company at more than $900 billion, excluding the investment itself
1
. That valuation would be more than double Anthropic's reported $380 billion valuation from its February funding round1
2
. However, discussions are ongoing and no formal agreement or term sheet has yet been signed1
. Founded in 2021 by former OpenAI employees, Anthropic has emerged as one of the leading companies in the AI industry, developing a range of AI products focused on tasks such as coding and cybersecurity1
. The combination of strategic acquisitions and massive capital raises signals Anthropic's intent to compete aggressively with OpenAI and Google in the race to dominate AI tools and infrastructure.References
Summarized by
Navi
Related Stories
Anthropic valuation soars to $900B as investor demand pushes AI startup past OpenAI
23 Apr 2026•Business and Economy
Anthropic Nears $170 Billion Valuation with Potential $5 Billion Funding Round
30 Jul 2025•Business and Economy
Anthropic Secures $3.5 Billion in Funding, Tripling Valuation to $61.5 Billion
25 Feb 2025•Business and Economy
Recent Highlights
1
Google stops first AI-developed zero-day exploit designed to bypass two-factor authentication
Technology
2
Anthropic and SpaceX sign major AI compute deal, eye orbital data centers in space
Technology
3
Anthropic blames dystopian sci-fi for training AI models to blackmail users, fixes with fiction
Technology
Recent Highlights
Today's Top Stories
Don’t drown in AI news. We cut through the noise - filtering, ranking and summarizing the most important AI news, breakthroughs and research daily. Spend less time searching for the latest in AI and get straight to action.
