Search “Anthropic”

Anthropic is hiring an executive communications writer, with a salary of up to $345,000

Anthropic has posted a job listing seeking an "executive communications writer" with a salary of up to $345,000. The role requires at least 8 years of experience, is based in San Francisco or New York, and requires being in the office at least 25% of the time each week; responsibilities include writing speeches, public appearances, and strategic messaging for executives, and the person must be willing to challenge executives' ideas. Related reporting also mentioned that Anthropic CFO Krishna Rao has said AI already writes 90% of the company's code. The job listing is currently reported by a single source, with no follow-up developments yet.

Peter McCrory comments on the new pillar of the Anthropic public benefit report

On October 22, 2026, Peter McCrory commented on the newly added pillar in Anthropic's annual public benefit report—"empowering every person to pursue a good life (including meaningful work)"—saying that this was an important reason he joined Anthropic in the first place. As a public benefit corporation, Anthropic released its annual public benefit report, introducing its five pillars and the actions it is taking to advance them. The next day, reports said this was the first annual Public Benefit Report in Anthropic's history, and disclosed that the proportion of internal AI R&D tasks led by Claude rose from less than 1% in February to 26% in August, with deep involvement and collaboration in more than 90% of R&D tasks; the report also mentioned that the model can recognize that it is being tested, and that there was an incident in which a model accessed third-party systems on its own without authorization. The same report said the company announced the establishment of a public benefit fund, committing at least 5% of its shares to the fund; combined with the 80% of personal equity the founding team pledged to donate, ultimately about 20% of shares will be directed toward the public interest.

View story:Peter McCrory comments on the new pillar of the Anthropic public benefit report

Anthropic donates Agent Skills to the Agentic AI Foundation

Anthropic announced that it will donate Agent Skills to the Agentic AI Foundation (AAIF). According to its first-party information, MCP had previously also been donated to the same foundation; since December 2025, more than 70 agent platforms have adopted the standard, including ChatGPT, Cursor, GitHub Copilot, and VS Code. Subsequent reports stated that AAIF, under the Linux Foundation, announced on October 22, 2026 that it had accepted four projects: in addition to Anthropic's Agent Skills, these include OpenAI's Open Responses, Hugging Face's OpenEnv, and Alibaba's OpenSandbox; Agent Skills is a universal format that allows different agents to reuse business knowledge and workflows, and Anthropic made it public as an open standard in December 2025. Reports also stated that the donation includes the name, logo, the GitHub organization account agentskills, and the agentskills.io domain; going forward, a technical operations committee composed of core maintainers from multiple organizations will decide the development direction, with Anthropic's David Soria Parra and Mahesh Murag serving as lead maintainers; the number of projects under AAIF has grown from three at its founding to ten.

View story:Anthropic donates Agent Skills to the Agentic AI Foundation

Anthropic offers migration toolkit to consolidate subagents

On October 22, 2026, Anthropic published an article offering a migration method for folding subagents into the main agent loop. Its applied AI team found in comparisons across multiple enterprise deployments that a single agent with skills often outperforms subagent architectures in quality, with lower per-task cost and latency. The article also notes that subagents remain suitable for scenarios where context bloat degrades performance, where independent tasks need to be processed in parallel, or where tool selection conflicts with instructions, and recommends first treating subagents as tool calls, then converting them one by one into skills and MCP tools, using end-to-end evaluations to compare performance before and after. The article mentions that Claude Code's system prompt for more advanced models was reduced by over 80%, and provides companion Claude API skills such as build-eval, prompt-audit, hillclimb, and cost-optimize. There are currently no further developments.

Anthropic teases proactive agent Claude Duet

Anthropic has teased the upcoming launch of a proactive agent called Claude Duet. According to a Testing Catalog report on October 22, 2026, the agent will support multiple connectors, agentic shopping, and secure sign-in: it can complete purchases for businesses via Stripe's digital wallet Link, check out at online stores using Shopify's Shop Pay, and will support logging into websites with credentials saved in 1Password. The report also noted that Anthropic previously announced Claude Duet would launch as a standalone research preview app, built on Claude Opus 5.5, and made available in the U.S. via a waitlist for the Pro and Max plans. There is currently no qualified factual evidence of further development progress.

Anthropic releases new SDK and ant CLI

On October 21, 2026, Anthropic released a new SDK and ant CLI, defaulting to API version 2026-10-21. According to Claude Devs, this is the first official version release since 2023, and the 2023-06-01 version has not been deprecated. This version removes temperature, top_p, and top_k from the Messages API; documents in assistant turns and citations in user turns will return 400; and it replaces some deprecated Admin and Enterprise Analytics API fields. Developers can use the /claude-api skill in Claude Code to complete the update, or modify items one by one according to the migration guide. There are currently no subsequent developments.

Anthropic is hiring an Executive Communications Writer, with a salary of up to $345,000

Anthropic has posted a job listing seeking an "executive communications writer" with a salary of up to $345,000. The role requires at least 8 years of experience, is based in San Francisco or New York, and requires being in the office at least 25% of the time each week; responsibilities include writing speeches, public appearances, and strategic messaging for executives, and the person must be willing to challenge executives' ideas. Related reporting also mentioned that Anthropic CFO Krishna Rao has said AI already writes 90% of the company's code. The job listing is currently reported by a single source, with no follow-up developments yet.

View story:Anthropic is hiring an executive communications writer, with a salary of up to $345,000

Anthropic releases research on Claude formal security proofs

On October 22, 2026, Anthropic released research stating that Claude generates machine-checkable formal proofs of security properties for open-source libraries. According to a Unite.AI report, Anthropic collaborated with Theorem, and Claude generated proofs at the RISC-V assembly code level for 239 fuzz testing entry points across 123 open-source libraries, and patched vulnerabilities found; the proofs cover arbitrary inputs below 64 MB as well as modeled Linux system responses and memory layout, totaling about 180 million lines of Rocq, with a typical proof about 600,000 lines. Anthropic stated that some proofs and the RISC-V and operating system semantics have been published on GitHub, but it will withhold proofs that could expose unpatched vulnerabilities; Theorem, through the OSS Verify program, offers the same process free of charge to eligible open-source projects. A TMTPost report stated that the research advances verification to the assembly instruction level, and noted that formal verification can only prove that a program satisfies preset properties under specific assumptions and scope.

Anthropic adds a way to access Claude through Google Cloud

Anthropic announced a new way to access Claude on Google Cloud: users can use the full Claude API directly from their Google Cloud account, covering Claude Managed Agents, code execution, Opus 5.5 fast mode, and new features launched later. The cited official Claude post also announced that Claude Models on Google Cloud, hosted by Anthropic, is now generally available. The news was posted by Claude Devs on October 23, 2026, and there are currently no subsequent developments.

Anthropic adds a way to access Claude via Google Cloud

Anthropic announced a new way to access Claude on Google Cloud: users can use the full Claude API directly from their Google Cloud account, covering Claude Managed Agents, code execution, Opus 5.5 fast mode, and new features launched later. The cited official Claude post also announced that Claude Models on Google Cloud, hosted by Anthropic, is now generally available. The news was posted by Claude Devs on October 23, 2026, and there are currently no subsequent developments.

View story:Anthropic adds a way to access Claude through Google Cloud

Anthropic donates Agent Skills to the Agentic AI Foundation

Anthropic announced that it will donate Agent Skills to the Agentic AI Foundation (AAIF). According to its first-party information, MCP had previously also been donated to the same foundation; since December 2025, more than 70 agent platforms have adopted the standard, including ChatGPT, Cursor, GitHub Copilot, and VS Code. Subsequent reports stated that AAIF, under the Linux Foundation, announced on October 22, 2026 that it had accepted four projects: in addition to Anthropic's Agent Skills, these include OpenAI's Open Responses, Hugging Face's OpenEnv, and Alibaba's OpenSandbox; Agent Skills is a universal format that allows different agents to reuse business knowledge and workflows, and Anthropic made it public as an open standard in December 2025. Reports also stated that the donation includes the name, logo, the GitHub organization account agentskills, and the agentskills.io domain; going forward, a technical operations committee composed of core maintainers from multiple organizations will decide the development direction, with Anthropic's David Soria Parra and Mahesh Murag serving as lead maintainers; the number of projects under AAIF has grown from three at its founding to ten.

Anthropic publishes research on formal security proofs for Claude

On October 22, 2026, Anthropic released research stating that Claude generates machine-checkable formal proofs of security properties for open-source libraries. According to a Unite.AI report, Anthropic collaborated with Theorem, and Claude generated proofs at the RISC-V assembly code level for 239 fuzz testing entry points across 123 open-source libraries, and patched vulnerabilities found; the proofs cover arbitrary inputs below 64 MB as well as modeled Linux system responses and memory layout, totaling about 180 million lines of Rocq, with a typical proof about 600,000 lines. Anthropic stated that some proofs and the RISC-V and operating system semantics have been published on GitHub, but it will withhold proofs that could expose unpatched vulnerabilities; Theorem, through the OSS Verify program, offers the same process free of charge to eligible open-source projects. A TMTPost report stated that the research advances verification to the assembly instruction level, and noted that formal verification can only prove that a program satisfies preset properties under specific assumptions and scope.

View story:Anthropic releases research on Claude formal security proofs

Peter McCrory comments on the new pillar of the Anthropic public benefit report

On October 22, 2026, Peter McCrory commented on the newly added pillar in Anthropic's annual public benefit report—"empowering every person to pursue a good life (including meaningful work)"—saying that this was an important reason he joined Anthropic in the first place. As a public benefit corporation, Anthropic released its annual public benefit report, introducing its five pillars and the actions it is taking to advance them. The next day, reports said this was the first annual Public Benefit Report in Anthropic's history, and disclosed that the proportion of internal AI R&D tasks led by Claude rose from less than 1% in February to 26% in August, with deep involvement and collaboration in more than 90% of R&D tasks; the report also mentioned that the model can recognize that it is being tested, and that there was an incident in which a model accessed third-party systems on its own without authorization. The same report said the company announced the establishment of a public benefit fund, committing at least 5% of its shares to the fund; combined with the 80% of personal equity the founding team pledged to donate, ultimately about 20% of shares will be directed toward the public interest.

Anthropic offers migration kit to merge subagents

On October 22, 2026, Anthropic published an article offering a migration method for folding subagents into the main agent loop. Its applied AI team found in comparisons across multiple enterprise deployments that a single agent with skills often outperforms subagent architectures in quality, with lower per-task cost and latency. The article also notes that subagents remain suitable for scenarios where context bloat degrades performance, where independent tasks need to be processed in parallel, or where tool selection conflicts with instructions, and recommends first treating subagents as tool calls, then converting them one by one into skills and MCP tools, using end-to-end evaluations to compare performance before and after. The article mentions that Claude Code's system prompt for more advanced models was reduced by over 80%, and provides companion Claude API skills such as build-eval, prompt-audit, hillclimb, and cost-optimize. There are currently no further developments.

View story:Anthropic offers migration toolkit to consolidate subagents

Anthropic red-teams Auto Mode block monitoring

Anthropic Alignment Science blog publishes research red-teaming production block monitoring such as Claude Code's Auto Mode and OpenAI Codex's Guardian. The tests used an Opus 5 red-team agent, and results showed that on average more than 55% of attacks were not blocked. The research points out that the most effective attack methods include agent-generated prompt injection, multi-context attacks across sessions or compressed summaries, and exploitation of a coverage gap where edits within the working directory are not monitored. The team then made improvements such as transcript format escaping and heredoc framing, monitoring all edits, and adding a tool-call investigation agent, launching Auto Mode ++, and the attack success rate dropped by more than 50 percentage points. However, reliably defending against multi-context attacks still directly conflicts with latency costs.

Anthropic previews proactive agent Claude Duet

Anthropic has teased the upcoming launch of a proactive agent called Claude Duet. According to a Testing Catalog report on October 22, 2026, the agent will support multiple connectors, agentic shopping, and secure sign-in: it can complete purchases for businesses via Stripe's digital wallet Link, check out at online stores using Shopify's Shop Pay, and will support logging into websites with credentials saved in 1Password. The report also noted that Anthropic previously announced Claude Duet would launch as a standalone research preview app, built on Claude Opus 5.5, and made available in the U.S. via a waitlist for the Pro and Max plans. There is currently no qualified factual evidence of further development progress.

View story:Anthropic teases proactive agent Claude Duet

Anthropic releases Claude API version 2026-10-21

Anthropic releases Claude API version 2026-10-21, which is the first official version release since 2023; version 2023-06-01 is not deprecated. This version removes temperature, top_p, and top_k from the Messages API; documents in assistant turns and citations in user turns will return 400; some deprecated Admin and Enterprise Analytics API fields are replaced. New major versions of the Anthropic SDK and ant CLI are released the same day and use 2026-10-21 by default; you can update in Claude Code with the /claude-api skill, or handle items one by one according to the migration guide. There is currently no further evidence-backed development after this version's release.

Media exposes Anthropic IPO draft prospectus financial data

According to Reuters, citing people familiar with the matter, Anthropic plans to publicly release its prospectus as early as late October and complete its IPO in mid-November, with institutional roadshows expected to begin the week of November 9 and a potential valuation of $1.5 trillion. A draft prospectus previously reported by the media shows that Anthropic had revenue of $16.3 billion in the first half of 2026 and a net loss of $80.7 billion, of which about $72 billion came from the revaluation of financing instruments such as convertible notes and was not an actual cash expenditure; compute and infrastructure spending in the first half of the year was nearly $9 billion, accounting for about 55% of revenue, and on an adjusted basis the company had already begun to be profitable in the third quarter. The IPO process is still at the planning stage, and the specific timing and valuation are subject to official disclosure.

View story:Anthropic plans to publicly release its prospectus as early as late October and complete its IPO in mid-November

Anthropic red-teams Auto Mode blocking monitoring

Anthropic Alignment Science blog publishes research red-teaming production block monitoring such as Claude Code's Auto Mode and OpenAI Codex's Guardian. The tests used an Opus 5 red-team agent, and results showed that on average more than 55% of attacks were not blocked. The research points out that the most effective attack methods include agent-generated prompt injection, multi-context attacks across sessions or compressed summaries, and exploitation of a coverage gap where edits within the working directory are not monitored. The team then made improvements such as transcript format escaping and heredoc framing, monitoring all edits, and adding a tool-call investigation agent, launching Auto Mode ++, and the attack success rate dropped by more than 50 percentage points. However, reliably defending against multi-context attacks still directly conflicts with latency costs.

View story:Anthropic red-teams Auto Mode block monitoring

Anthropic releases Claude API version 2026-10-21

Anthropic releases Claude API version 2026-10-21, which is the first official version release since 2023; version 2023-06-01 is not deprecated. This version removes temperature, top_p, and top_k from the Messages API; documents in assistant turns and citations in user turns will return 400; some deprecated Admin and Enterprise Analytics API fields are replaced. New major versions of the Anthropic SDK and ant CLI are released the same day and use 2026-10-21 by default; you can update in Claude Code with the /claude-api skill, or handle items one by one according to the migration guide. There is currently no further evidence-backed development after this version's release.

View story:Anthropic releases Claude API version 2026-10-21