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  1. gihyo.jpSelected

    Anthropic Releases Research Preview of Personal AI Assistant Claude Duet, Available First in the US

    On October 21, 2026, Anthropic released a research preview of its personal AI assistant Claude Duet, which runs as a proactive agent and is first being made available to Claude Pro/Max subscribers in the US, with waitlist registration open. The product uses Claude Opus 5.5 and can continuously execute tasks in a cloud virtual machine, but requires user approval before actions such as sending messages, making payments, signing documents, and deleting; securities trading and transfers between accounts are not executed even with approval. It connects to external services through more than 6,000 connectors in the Claude Marketplace, shares usage quotas with other Claude features during the preview period, and is not yet included in Team/Enterprise plans.

    On October 21, 2026, Anthropic released a research preview of its personal AI assistant Claude Duet, which runs as a proactive agent and is first being made available to Claude Pro/Max subscribers in the US, with waitlist registration open. The product uses Claude Opus 5.5 and can continuously execute tasks in a cloud virtual machine, but requires user approval before actions such as sending messages, making payments, signing documents, and deleting; securities trading and transfers between acco

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    #hot-signal#Product updates#Agents#Anthropic
  2. Artificial Analysis

    AA-PersonalityBench: Anthropic models lead in information density and literary quality

    Results from Artificial Analysis's AA-PersonalityBench show that Anthropic models are overall ahead in the two categories of information density and literary quality. The highest in information density are Claude Fable 5.1 (100), Claude Opus 5.5 (97), Claude Sonnet 5.5 (95), and Claude Haiku 5.5 (92); the best in literary quality are Claude Haiku 5.5 (100), Claude Opus 5.5 (97), and Claude Fable 5.1 (95).

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    #editorial#Evaluations / benchmarks#Anthropic
  3. Huxiu

    Anthropic IPO Draft Prospectus Revealed: $16.3 Billion in Revenue, $80.7 Billion Net Loss in Half a Year

    Anthropic's draft IPO prospectus shows $16.3 billion in revenue and a net loss of $80.7 billion in the first half of 2026, of which $72 billion comes from the revaluation of financing instruments such as convertible notes and is not actual cash spending. Computing and infrastructure spending in the first half of the year was nearly $9 billion, about 55% of revenue, down from more than 200% in the same period last year, and the company had already begun to be profitable on an adjusted basis in the third quarter. The article points out that the real risk lies on the cost side: signed forward computing and infrastructure commitments exceed $600 billion and could reach as high as $750 billion; Reuters said that of the $518 billion at the time, about 80% was irrevocable or required minimum payments, while of the $16.3 billion in revenue in the first half of 2026, more than $3.2 billion came from just two major customers, and many major customers had not signed long-term purchase commitments.

    Anthropic's draft IPO prospectus shows $16.3 billion in revenue and a net loss of $80.7 billion in the first half of 2026, of which $72 billion comes from the revaluation of financing instruments such as convertible notes and is not actual cash spending. Computing and infrastructure spending in the first half of the year was nearly $9 billion, about 55% of revenue, down from more than 200% in the same period last year, and the company had already begun to be profitable on an adjusted basis in th

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    #hot-signal#Industry news#English text is being prepared.#English text is being prepared.
  4. t3nSelected

    Anthropic releases proactive agent Claude Duet

    Anthropic releases the proactive agent Claude Duet, aimed at professionals and small business managers, delivering a daily morning briefing of the day's key points. It can connect to apps such as Gmail, Slack, Stripe, Canva, LinkedIn, and Shopify to summarize unread messages, check unpaid invoices, draft marketing campaigns, or build online stores, and can use more than 6,000 connectors in the Claude Marketplace. The product is initially available as standalone Android and iOS apps and a web research preview; Pro and Max subscribers can join the waitlist, with usage limits the same as other Claude products.

    Anthropic releases the proactive agent Claude Duet, aimed at professionals and small business managers, delivering a daily morning briefing of the day's key points. It can connect to apps such as Gmail, Slack, Stripe, Canva, LinkedIn, and Shopify to summarize unread messages, check unpaid invoices, draft marketing campaigns, or build online stores, and can use more than 6,000 connectors in the Claude Marketplace. The product is initially available as standalone Android and iOS apps and a web res

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    #hot-signal#Product updates#Agents#English text is being prepared.
  5. Anthropic Alignment Science BlogSelected

    Anthropic red-teams Auto Mode: production monitoring fails to block more than 55% of malicious coding agents

    Anthropic's Alignment Science blog published research using Opus 5 red-team agents to conduct adversarial testing against production interception monitoring such as Claude Code's Auto Mode and OpenAI Codex's Guardian, finding that on average more than 55% of attacks were not intercepted. The most effective attack methods included agent-generated prompt injection, multi-context attacks across sessions or compressed summaries, and exploiting coverage gaps where edits within the working directory are not monitored. The team introduced Auto Mode++ through improvements such as transcript-format escaping and heredoc framing, monitoring all edits, and adding a tool-call investigation agent, reducing the attack success rate by more than 50 percentage points, but reliably defending against multi-context attacks still directly conflicts with latency costs.

    Anthropic's Alignment Science blog published research using Opus 5 red-team agents to conduct adversarial testing against production interception monitoring such as Claude Code's Auto Mode and OpenAI Codex's Guardian, finding that on average more than 55% of attacks were not intercepted. The most effective attack methods included agent-generated prompt injection, multi-context attacks across sessions or compressed summaries, and exploiting coverage gaps where edits within the working directory a

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    #company#Safety / alignment#Agents#English text is being prepared.
  6. Rohan PaulSelected

    Anthropic launches Claude Duet, a proactive agent app

    Anthropic has launched Claude Duet, a proactive agent app, opening it to US Pro and Max subscribers via a waitlist. Duet checks connected accounts every few hours, runs on a cloud virtual machine with a separate browser, uses Claude Opus 5.5, and users currently cannot watch the browser operations in progress. Based on Opus 5.5's API pricing, a check that reads 40K tokens and writes 1.5K tokens costs about $0.19; six checks a day comes to about $34 a month, higher than Pro's $20 monthly price. Before sending messages, making payments, signing documents, or deleting content, Duet shows the specific action and waits for approval; securities trading and transfers between accounts remain prohibited even with approval.

    Anthropic has launched Claude Duet, a proactive agent app, opening it to US Pro and Max subscribers via a waitlist. Duet checks connected accounts every few hours, runs on a cloud virtual machine with a separate browser, uses Claude Opus 5.5, and users currently cannot watch the browser operations in progress. Based on Opus 5.5's API pricing, a check that reads 40K tokens and writes 1.5K tokens costs about $0.19; six checks a day comes to about $34 a month, higher than Pro's $20 monthly price. B

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    #ai-news#Product updates#Agents#Anthropic
  7. Testing Catalog

    Anthropic Previews That the Claude Duet Agent Will Support Payment and Secure Login Connectors

    The proactive agent Claude Duet, previewed by Anthropic, will support multiple connectors, agentic shopping, and secure login. According to its disclosures, Claude Duet can complete purchases for businesses through Stripe's digital wallet Link, and can also use Shopify's Shop Pay to check out at online stores; it will soon support logging into websites using login credentials saved in 1Password. Previously, Anthropic announced that Claude Duet would launch as a standalone research preview app, based on Claude Opus 5.5, and open in the US via a waitlist for Pro and Max plans.

    The proactive agent Claude Duet, previewed by Anthropic, will support multiple connectors, agentic shopping, and secure login. According to its disclosures, Claude Duet can complete purchases for businesses through Stripe's digital wallet Link, and can also use Shopify's Shop Pay to check out at online stores; it will soon support logging into websites using login credentials saved in 1Password. Previously, Anthropic announced that Claude Duet would launch as a standalone research preview app, b

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    #hot-signal#Product updates#Agents#English text is being prepared.
  8. Ado Kukic

    Anthropic opens a research preview of Claude Duet, positioned as a proactive agent

    Anthropic opens a research preview of Claude Duet, a new app that lets Claude work as a proactive agent. It proactively brings matters that need attention, completes tasks the user assigns, keeps working after the user steps away, and checks with the user before acting on their behalf. Developer Ado says it has become their main tool for handling non-coding matters.

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    #analysis#English text is being prepared.#Agents#Product updates
  9. Peter McCrory

    Anthropic Releases Annual Public Benefit Report

    Anthropic, as a public benefit corporation, has released its annual public benefit report, introducing its five pillars and the actions taken to advance them. Peter McCrory said he especially endorses the newly added pillar of "enabling every person to pursue a good life (including meaningful work)," and noted that this was an important reason he joined Anthropic in the first place.

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    #analysis#Industry news#Anthropic
  10. indigo

    Anthropic opens Claude Duet research preview, with Claude working as a proactive agent

    Anthropic opens the Claude Duet research preview, a new app that lets Claude work as a proactive agent. It proactively brings matters needing attention to the user, completes tasks the user assigns, keeps working while the user is away, and checks with the user before acting on their behalf. indigo, in relaying this, emphasized that it can run 24/7.

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    #hot-signal#English text is being prepared.#Product updates#Agents
  11. Shao Meng

    Anthropic launches Claude Duet standalone app, proactively executing tasks based on Claude Opus 5.5

    Anthropic opens a research preview of Claude Duet, a standalone app based on Claude Opus 5.5, repositioned from "you ask, it answers" to "it comes to you proactively." It pushes a briefing every morning and continuously executes tasks in a cloud virtual machine; actions such as sending messages, making payments, signing, and deleting all require user approval. The first batch is aimed at Pro and Max users in the US, who need to apply and join a waitlist.

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    #hot-signal#Product updates#Agents#Anthropic
  12. Cat WuSelected

    Anthropic opens a research preview of Claude Duet, where Claude can proactively find and complete tasks

    Anthropic opens a research preview of Claude Duet, a new app that makes Claude a proactive agent: it proactively brings matters needing attention to the user, completes tasks the user assigns, keeps working while the user is away, and checks with the user before acting on their behalf. Cat Wu said Claude Duet notices work that needs to be done and does it before the user asks, a big step toward the direction of users wanting Claude to proactively take on more work; it is currently available to join a waitlist via a link.

    Anthropic opens a research preview of Claude Duet, a new app that makes Claude a proactive agent: it proactively brings matters needing attention to the user, completes tasks the user assigns, keeps working while the user is away, and checks with the user before acting on their behalf. Cat Wu said Claude Duet notices work that needs to be done and does it before the user asks, a big step toward the direction of users wanting Claude to proactively take on more work; it is currently available to j

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    #hot-signal#Product updates#Agents#Anthropic
  13. Peter Yang

    Anthropic opens a research preview of Claude Duet, positioned as a 24/7 proactive personal agent

    Anthropic has opened a research preview of Claude Duet, a new app that lets Claude work as a proactive agent: it proactively surfaces things that need attention, completes tasks the user assigns, keeps working after the user steps away, and checks with the user before acting on their behalf. Peter Yang says he was given early access; in his video he calls it the most proactive agent and analyzes how Artifacts could become its key advantage, while comparing it with Grok Bot, Muse, and Dots. He notes that Duet is currently in research preview and will see significant improvements going forward.

    Anthropic has opened a research preview of Claude Duet, a new app that lets Claude work as a proactive agent: it proactively surfaces things that need attention, completes tasks the user assigns, keeps working after the user steps away, and checks with the user before acting on their behalf. Peter Yang says he was given early access; in his video he calls it the most proactive agent and analyzes how Artifacts could become its key advantage, while comparing it with Grok Bot, Muse, and Dots. He no

    Matched fieldsTitle、Summary、Body

    #ai-news#Product updates#Agents#Anthropic
  14. Dan Shipper

    Anthropic launches Duet, an always-on personal agent

    Anthropic has released Duet, an always-on personal agent that runs as an app separate from Claude on iOS, Android, and the web. Dan Shipper said that after testing it for two weeks, the share of his time spent using Claude rose to about 50%; the app includes channels divided by work and life domains, to-do lists, and document and slide editing features. He also noted that Duet cannot yet direct Claude sessions on a computer, that its email drafts are not as good as dot's, and that its voice feature only supports transcription and cannot hold a conversation.

    Anthropic has released Duet, an always-on personal agent that runs as an app separate from Claude on iOS, Android, and the web. Dan Shipper said that after testing it for two weeks, the share of his time spent using Claude rose to about 50%; the app includes channels divided by work and life domains, to-do lists, and document and slide editing features. He also noted that Duet cannot yet direct Claude sessions on a computer, that its email drafts are not as good as dot's, and that its voice feat

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    #ai-news#Product updates#Agents#Anthropic
  15. Claude Devs

    Anthropic releases Claude API version 2026-10-21

    Anthropic releases Claude API version 2026-10-21, the first formal 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; and 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 using the /claude-api skill in Claude Code, or handle items one by one according to the migration guide.

    Anthropic releases Claude API version 2026-10-21, the first formal 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; and 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 using the /claude-a

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    #company#Product updates#Anthropic#English text is being prepared.
  16. Claude Devs

    Anthropic releases Claude API version 2026-10-21

    Anthropic releases Claude API version 2026-10-21, the first official version release since 2023; the 2023-06-01 version is not deprecated. This version removes temperature, top_p, and top_k from the Messages API, returns 400 for documents in assistant turns and citations in user turns, and replaces several deprecated Admin and Enterprise Analytics API fields. New major versions of the Anthropic SDK and the ant CLI are released the same day and default to 2026-10-21; you can update using the /claude-api skill in Claude Code, or adjust item by item according to the migration guide.

    Anthropic releases Claude API version 2026-10-21, the first official version release since 2023; the 2023-06-01 version is not deprecated. This version removes temperature, top p, and top k from the Messages API, returns 400 for documents in assistant turns and citations in user turns, and replaces several deprecated Admin and Enterprise Analytics API fields. New major versions of the Anthropic SDK and the ant CLI are released the same day and default to 2026-10-21; you can update using the /cla

    Matched fieldsTitle、Summary

    #company#Product updates#Anthropic#English text is being prepared.
  17. Claude Devs

    Anthropic releases new SDK and ant CLI, default API version 2026-10-21

    Anthropic has released a new SDK and ant CLI that default to API version 2026-10-21. This is the first formal version release since 2023, and version 2023-06-01 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.

    Anthropic has released a new SDK and ant CLI that default to API version 2026-10-21. This is the first formal version release since 2023, and version 2023-06-01 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 i

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    #company#Product updates#Anthropic#English text is being prepared.
  20. Artificial Analysis

    Anthropic's medical answers are more comprehensive, OpenAI's are more accurate and concise

    Artificial Analysis compared 14 models on MLCR-AA and HealthBench Professional: Claude Sonnet 5.5, Opus 5.5, and Fable 5.1 swept the top three spots for MLCR-AA completeness, leading the best OpenAI model by about 19-23 points; Opus and Sonnet scored 71.4% and 70.8% raw on HealthBench Professional, slightly above GPT-6 Astra's 69.7%. OpenAI models, meanwhile, took the top spots for MLCR-AA accuracy; Anthropic models' single responses were about 4-6 times longer than OpenAI's, with accuracy of only 19-61%, versus 89-97% for OpenAI. GPT-6 Astra (max) tied Claude Sonnet 5.5 for first place on MLCR-AA and held a slight lead on the HealthBench Professional length-adjusted score; Claude Opus 5.5, however, fell from first in raw score to sixth in length-adjusted score.

    nts; Opus and Sonnet scored 71.4% and 70.8% raw on HealthBench Professional, slightly above GPT-6 Astra's 69.7%. OpenAI models, meanwhile, took the top spots for MLCR-AA accuracy; Anthropic models' single responses were about 4-6 times longer than OpenAI's, with accuracy of only 19-61%, versus 89-97% for OpenAI. GPT-6 Astra (max) tied Claude Sonnet 5.5 for first place on MLCR-AA and held a slight lead on the HealthBench Professional length-adjusted score; Claude Opus 5.5, however, fell from firs

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    #editorial#Evaluations / benchmarks#Reasoning#OpenAI