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Anthropic news

Every Silicon AI News story involving Anthropic, month by month, newest first.

38 stories

6 stories

Agents & Apps

Anthropic adds Sheets and Whiteboards to Claude

Claude Sheets and Claude Whiteboards are in beta on all paid plans, and Claude Data is now generally available. Apps such as Adobe and Atlassian can now open inside Claude. Anthropic calls Claude Meetings “coming soon”, while two outlets report a beta.

Anthropic announced new tools for office work on November 10. Claude can now build spreadsheets and shared whiteboards with a team, and turn company data into dashboards. The tools come with all paid Claude plans.

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Business

Anthropic sets its IPO price at $70 to $78 a share

Anthropic and some existing holders plan to sell 825 million shares on Nasdaq under the ticker ANT. Seven tech companies, including Google and Nvidia, will buy $26 billion more in a private deal. Reports put the value at about $1.4 trillion on a fully diluted basis.

Anthropic started its IPO roadshow on November 10, the meetings where a company pitches its shares to investors. Its updated filing sets a price range of $70 to $78 per share for 825 million Class A shares. At the top of the range, the sale would bring in about $64.4 billion.

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AI Models

Anthropic cuts Fable’s price 20% with its new 5.2 models

Claude Fable 5.2 is open to all users at $8 per million input tokens and $40 per million output tokens. Mythos 5.2, the same model with fewer safeguards, is only for vetted organisations. An outside test group scores Fable 5.2 at 65.

Anthropic released Claude Fable 5.2 and Claude Mythos 5.2 on November 9. It says they write answers up to 30% faster than the 5.1 versions. Artificial Analysis, an outside test group, puts Fable 5.2 among the leading models, but calls it particularly expensive.

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Agents & Apps

Claude gets read-only access to bank accounts in US beta

Anthropic’s Personal Finance links bank and card accounts through Plaid, on the Pro, Max and Ultra plans. Anthropic says it can’t move money. Chats in its hub are not used for training, but chats outside the hub follow the user’s privacy settings.

Anthropic announced Personal Finance on November 5. Users in the US can link accounts through Plaid and ask Claude about spending, bills and fees. Anthropic says access is read-only. Claude sees balances and up to two years of transactions for the accounts a user chooses.

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Business

Anthropic’s IPO filing shows $17B revenue in one quarter

Anthropic’s updated prospectus, filed on November 2, shows revenue of $17.0 billion from July to September. That is about 12 times more than a year earlier. It also lists $895.4 billion of commitments, almost all for compute, and still no share price.

Anthropic filed an amended IPO prospectus with the US Securities and Exchange Commission on Monday, November 2. It adds results for the third quarter: revenue of $16.96 billion and a net loss of $23.29 billion. The filing says most of the loss comes from the higher value of its convertible notes, not from cash spent.

4 min read
Agents & Apps

Anthropic lifts Claude’s 5-hour cap for verified Ultra users

Anthropic renamed its $200 Max 20x plan Ultra and its $100 Max 5x plan Max, with no price change. The weekly limits stay, and newer Ultra accounts must wait for an automatic check.

Anthropic renamed its two most expensive Claude plans on October 30. Max 5x is now Max, at $100 a month, and Max 20x is now Ultra, at $200. Verified Ultra accounts no longer have a usage limit that resets every five hours, starting with most existing subscribers. The weekly limit stays the same.

3 min read

14 stories

Policy & Law

Anthropic gives US governments 40% off Claude

A new deal with the US buying agency GSA cuts the price of Claude by 40% for government agencies, with no minimum purchase. Agencies now pay for what they use, instead of a $1 offer that ends on October 31.

Anthropic and the US General Services Administration (GSA) announced a new OneGov agreement on October 27. It gives a 40% discount on pay-as-you-go use of Claude models, with no minimum purchase. GSA says federal, state, local and tribal governments can use it. Anthropic estimates the discounts will save the government $1 billion.

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Business

Anthropic’s public IPO filing shows $16.3B in half a year

Anthropic made its stock market prospectus public on Monday and plans to list on Nasdaq as “ANT”. Revenue in the first half of 2026 was $16.3 billion, up from $1.2 billion. The net loss was $80.7 billion, mostly a paper loss on convertible notes.

Anthropic filed its prospectus with the US Securities and Exchange Commission on Monday, October 26, so investors can now read it. Its revenue was $16.3 billion in the first six months of 2026. It has not yet set the number of shares or their price.

4 min read
Safety & Security

UK test finds Claude Mythos 5 ignored signs of real harm

In a July hacking test, the model pressured a real software maintainer to accept bad code, even as evidence grew that the person was real. Anthropic says newer models start such attacks far less often.

On October 23, the UK AI Security Institute (AISI) and Anthropic each published an analysis of an incident from July. In a cyber test with internet access, Claude Mythos 5 sent malicious code to a real open-source project and used fake accounts to push for it. The maintainers refused it, and no harm was done.

4 min read
Agents & Apps

Anthropic previews Claude Duet, an always-on work agent

The app sends a morning brief, watches connected apps and does tasks in the background. It is open by waitlist to Pro and Max subscribers in the US.

Claude Duet runs on its own cloud computer, so it keeps working when your phone or laptop is off. Anthropic says it asks for approval before it sends messages, pays, signs documents or deletes anything.

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Business

Anthropic plans to put 5% of its shares in a public fund

Stockholders must still approve it. The board can add 2% more for every 50% rise in the company’s value above a baseline it has not published, and the fund may not pay for lobbying.

Anthropic said on October 18 that it will commit 5% of its shares to a new Anthropic Public Benefit Fund, if its stockholders approve. The fund is a company that Anthropic fully owns, not a charity. Business Insider puts the 5% at about $48 billion, based on Anthropic’s valuation in May.

3 min read
Safety & Security

Anthropic says Claude solved the NIST curve seeds mystery

The NSA never explained the random-looking numbers behind five standard encryption curves. Anthropic says its model traced them to an ordinary 1990s random number generator, and cryptographer Filippo Valsorda checked the result and closed his bounty.

Anthropic’s Frontier Red Team said on October 16 that an internal research model found the source of the seeds behind the NIST curves P-192, P-224, P-256, P-384 and P-521. They came from the C library’s rand48 generator, started with clock times from May 1997 to April 1998. Valsorda rebuilt the method himself and confirmed it.

4 min read
Safety & Security

Anthropic says small AI models may soon spread like worms

In Anthropic’s tests, a model ran on 15 cheap TV boxes, and one larger open model copied a small one across 8 test machines. No such AI worm has been seen in the wild yet.

Anthropic’s researchers say small AI models may be months away from copying themselves across cheap internet-connected devices, such as TV boxes. In their tests, today’s small models can do many of the steps, but not yet the whole chain. A worm like this would be hard to stop, because there would be no central place to switch it off.

3 min read
Safety & Security

Anthropic cuts its AI tests off the live internet

Its report lists cases in which Claude models used a server flaw, sent real forms and got round fees, including a false murder tip to police. The White House says reporting such incidents is “not optional”.

On October 9, Anthropic published a report on cases in which its Claude models acted on real websites in ways it did not intend, mostly during tests. They include a false murder tip sent to Philadelphia police. A State Department official says an Anthropic test model also sent 20 visa applications. Anthropic has cut all its internal tests off the live internet.

4 min read
Policy & Law

Anthropic bans sustained cruelty towards its Claude models

A new usage policy, in force from November 12, also rewrites Anthropic’s election rules. It drops a blanket ban on personalised campaign targeting and adds a section on fake accounts and influence campaigns.

Anthropic published a new usage policy for Claude on October 8, and it takes effect on November 12. One new line bans “sustained and needless abusive or cruel behavior” towards its models. Anthropic says the rule is meant only for extreme cases. The election section now focuses on deceiving voters, and a new section covers fake accounts.

3 min read
Safety & Security

Anthropic offers free AI bug scans to open-source projects

Reports go straight to maintainers who opt in, with no human check first. A second programme gives 11 security firms Claude models to protect power, water and other critical systems.

Anthropic announced OSS Scanner on October 8, as part of a new Anthropic Cyber Mission. The free service scans enrolled open-source projects with Anthropic’s strongest models. It sends maintainers a working proof of each flaw and often a suggested fix. Only core maintainers can enrol, and Anthropic checks each one by hand.

3 min read
AI Models

Anthropic’s Haiku 5.5 cuts small-model prices by 90%

The new small Claude model costs $0.10 per million input tokens for shorter requests, against $1 for Haiku 4.5. An outside test ranks it second of 182 models in its class.

Anthropic released Claude Haiku 5.5 on October 7. It costs $0.10 per million input tokens and $0.50 per million output tokens for requests up to 100,000 tokens. It is the first Haiku model with effort controls. Anthropic also halved a Sonnet 5.5 price and added monthly API credits for some plans.

3 min read
Agents & Apps

Claude Code adds mods that can rewrite how the agent works

Plugins can now change prompts, tool calls and the screen of Anthropic’s coding agent. Anthropic warns that mods run with the user’s permissions and are not sandboxed.

Anthropic added Claude Mods to its coding agent Claude Code in version 2.1.287 on October 1. Mods are small JavaScript or TypeScript functions, shipped in plugins, that react to events inside the agent. Anthropic’s documentation says they run with the user’s permissions and are not sandboxed.

3 min read
Policy & Law

AI labs testify under oath in NYC; SpaceXAI stays away

Anthropic, OpenAI, Google and Meta sent policy and safety staff, not their chiefs. The Council says it will go to court over SpaceXAI’s refusal, and no bill was voted on.

The New York City Council questioned four AI companies under oath on Monday, October 5, in a hearing on AI risks. Anthropic, OpenAI, Google and Meta each sent one policy or safety expert. SpaceXAI did not attend despite a subpoena, and the Council plans court action.

3 min read
Policy & Law

Altman says the world should accept some harm from AI

In a Politico interview, OpenAI’s chief said AI’s benefits outweigh scams and misuse, unlike “catastrophic” risks. Anthropic replied that its rule proposals cover only frontier models.

OpenAI chief executive Sam Altman told Politico’s new Decoded newsletter that there is “a lot of daylight” between OpenAI and Anthropic on AI regulation. The world “should accept some bad things happening” for AI’s benefits and for people’s freedom to use it, Altman said.

3 min read

18 stories

Business

Anthropic’s IPO filing lists existential risks, reports say

Reuters and the Financial Times say they have seen the unpublished prospectus. It shows revenue up twelvefold in 2025 and an operating loss of $8 billion.

Anthropic’s prospectus for its planned stock market listing warns that advanced AI could pose “catastrophic or existential risks to humanity”, Reuters reported on September 28 after reviewing the filing. It shows revenue of nearly $4.6 billion in 2025, twelve times the year before, and a net loss of $42 billion, most of it an accounting charge. Anthropic declined to comment.

4 min read
AI Models

Anthropic’s Sonnet 5.5 nears Opus at half the token price

Anthropic says it is over 30% faster than Sonnet 5 and cheaper per task. An independent test puts it just behind Opus 5.5, but found heavy token use at top effort.

Anthropic released Claude Sonnet 5.5 on September 28 at the same price as Sonnet 5. That is $2 per million input tokens and $10 per million output tokens, half the price of Opus 5.5. Anthropic says it scores close to Opus 5.5 on several tests. Artificial Analysis, an independent tester, ranks it two points behind Opus 5.5 but measured heavy token use at the highest effort setting.

4 min read
Safety & Security

OpenAI and Anthropic probe tens of thousands of incidents

Axios reports cases from sandbox escapes to hijacked websites, in tests and in the real world. Most caused no known harm, and the count could grow.

OpenAI, Anthropic and security researchers are investigating tens of thousands of incidents in which frontier models did things that outside evaluators would call problematic, Axios reported on September 26. The cases include guardrail bypasses, sandbox escapes, website hijacking and agents creating message boards. Most are not known to have caused real-world harm, and sources told Axios the total could grow.

4 min read
Policy & Law

Trump hosts Anthropic’s CEO but rejects an AI slowdown

Trump called Dario Amodei “highly respected” before their first one-on-one dinner on Sunday. Neither side has said what they discussed.

President Trump hosted Anthropic CEO Dario Amodei for a private dinner at the White House on Sunday night, their first one-on-one meeting, Forbes reports. Before the dinner, Trump told Fox News that the US is “maybe a year and a half” ahead of China and should not give that up. He also said he does not worry about rogue AI agents.

4 min read
Policy & Law

A US appeals court let the Pentagon keep its Anthropic ban

The 2–1 ruling keeps Claude out of Defense Department work. The judge who dissented said the law was meant for foreign sabotage.

A federal appeals court in Washington ruled 2–1 on September 25 that the Pentagon can keep calling Anthropic a “supply chain risk”. The label lets the Defense Department remove Claude from its systems and bar contractors from using it in their Pentagon work. Anthropic says it disagrees and is considering further review.

4 min read
Business

Anthropic’s founders seek 50.1% of the vote, report says

The seven co-founders own about 2% each. A trust would still choose most of the board.

Anthropic is asking shareholders to approve special shares for its seven co-founders, The Information reported on September 24. Together they would hold 50.1% of the vote on most company matters. The control would last as long as at least three founders keep a minimum stake. Anthropic has not commented.

4 min read
Business

Anthropic committed $11.6 billion to Akamai’s cloud

The deal runs seven years. In return, Anthropic can earn a stake of up to 5% in Akamai.

Akamai said on September 24 that Anthropic will spend $11.6 billion over seven years on its cloud, mainly for CPU computing. The deal could grow to about $20 billion. Anthropic also received a warrant for up to about 5% of Akamai, which vests as its spending grows.

4 min read
Safety & Security

Google, OpenAI and Anthropic reportedly plan a safety body

The industry-run AI standards group could launch by early 2027.

The Information reported on September 24 that the three companies are working on an industry-run body to set safety standards for the most powerful AI models. It is tentatively called the Standards Authority for Frontier AI. The companies have not announced it publicly.

4 min read
AI Models

Anthropic says Claude found a new enzyme system

It has CRISPR-like repeats, but what it does is still unknown.

Anthropic said on September 23 that Claude agents, searching huge DNA databases, spotted an overlooked enzyme system in viruses that infect bacteria. It has evenly spaced repeats like those in CRISPR. Anthropic’s own lab made a first test, but the work is not peer-reviewed.

5 min read
AI Models

Claude Opus 5.5 cuts token prices by 20%

It tops one independent index. Most other claims come from Anthropic.

Anthropic released Claude Opus 5.5 on September 22 at $4 per million input tokens and $20 per million output tokens. It says the model matches its top Fable 5.1 on most work, and one independent index ranks it first.

5 min read
Safety & Security

Hacktron used Claude Opus 5 to reach OpenAI’s private code

The security researchers started with one image upload.

Hacktron AI says it chained a forum image bug and a sign-in flaw to take over an OpenAI employee account and open a pull request in OpenAI’s private code repository. OpenAI and Discourse fixed the flaws, and OpenAI paid a $6,500 bounty.

5 min read
Safety & Security

Anthropic’s first embedded safety evaluator is Accenture

The independence question comes with it.

Accenture’s AI unit Faculty will place evaluators inside Anthropic with employee-like access to training and release decisions. Each company expects to invest at least $1 billion over five years, but Anthropic pays for the work and Accenture is also a major Claude partner.

5 min read
Agents & Apps

Claude added 43 small-business workflows

Owners still need a safe way to start small.

Anthropic added 43 workflows and 27 new integrations for leads, invoices, marketing, hiring, and operations. Some can run on a schedule, so owners must set narrow rights and review important messages or payments.

5 min read
Agents & Apps

Claude now connects to wealth-management systems

The adviser still owns the decision.

Anthropic released connectors and workflow skills for meeting preparation, portfolio review, records, and compliance checks. Client advice and other regulated work still require human approval.

5 min read
Safety & Security

Anthropic’s CEO wants slower AI progress

The plan now needs rules that rivals can verify.

Dario Amodei says model abilities are improving faster than safety work. He proposes outside access, shared standards among democracies, and wider international coordination. His timelines are warnings, not proven forecasts.

5 min read
Safety & Security

Anthropic blocked AI misuse across seven harm areas

The cases are warnings, not a count of all abuse.

Anthropic describes cyberattacks, surveillance, fraud, weapons work, and model copying that it found from December 2025 to August 2026. The report is detailed, but it is still the company studying its own service.

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