Anthropic unveils Claude Duet, an AI agent that contacts you first: preview for Pro and Max subscribers in the US
Checked on
Published on
Announced by Anthropic on 21 October: what this agent is, who can use it and the limits.

In this article
The essentials
Anthropic unveiled “Claude Duet” on 21 October, an AI agent that watches your connected apps and alerts you without being asked. For now it is a research preview reserved for Pro and Max subscribers in the United States, on a waiting list.
What it does
Each morning it sends a short summary of the important items in the connected apps, then checks them all every few hours and alerts you if needed. According to the press, it runs in its own virtual machine in the cloud, with a browser, and so keeps working after the computer or phone is closed.
Actions subject to approval
Duet acts on its own but asks the user’s permission before high-stakes actions: sending a message, paying, signing a document, deleting a file. The balance between warning first and not acting alone on what matters is at the heart of the concept.
Availability and price
Reserved for Pro and Max subscribers in the United States, after joining a waiting list; usable on claude.ai and in the apps (iOS in particular). Team and Enterprise plans are not yet included. No separate price: it is included in the subscription.
Competition and limits
Anthropic positions Duet against Muse (Meta) and Dots (OpenAI), agents that act by themselves. The company acknowledges an early research preview that may misjudge what is urgent, and says it will adjust it based on feedback. It is said to be less comfortable with personal tasks such as booking tickets.
To keep in mind
This article is based on Anthropic’s announcement and on MacRumors, 9to5Mac and other media. Details (apps, regions) vary between articles; check Anthropic’s official announcement.
Learn the grammar
French grammar
Learn sentence patterns and usage from the article’s own sentences.
01The present indicative
est / sont + attribute (noun, adjective, prepositional phrase)
Annoncé par Anthropic le 21 octobre : ce qu’est cet agent, qui peut l’utiliser et les limites.Key pointsÊtre in the present is est for a singular subject and sont for a plural one. It describes nature, state or place (“is”, “is located”). If what follows (the attribute) is a noun, adjective or prepositional phrase, it is not a passive. If a past participle follows, it is a passive (est annoncé). Headlines and summaries often use the present to describe the current situation.
02The passé composé
present of avoir + past participle
Les chiffres viennent des entreprises ou des organismes cités ; JAPANITIES ne les a pas vérifiés.Key pointsThe passé composé is the most common past tense, used for “did” and “has done” — actions completed in the past. It is formed with the auxiliary avoir (a / ont…) in the present + a past participle. Past participles of -er verbs end in -é (annoncer → annoncé); learn the irregular ones (faire → fait, prendre → pris, voir → vu). In the negative, ne … pas wraps the auxiliary (n’a pas annoncé). In the news it reports facts that have already happened, such as “announced” or “voted”.
03The imparfait
stem (nous form of the present) + -ais / -ait / -ions / -iez / -aient
Anthropic a dévoilé le 21 octobre « Claude Duet », un agent d’IA qui surveille vos applications connectées et vous prévient sans que vous le demandiez.Key pointsThe imparfait describes states, background, habits and actions in progress in the past (il était, elle avait, ils pensaient). Take the nous form of the present, drop -ons, and add -ais / -ais / -ait / -ions / -iez / -aient. If the passé composé gives “the event itself”, the imparfait paints “the situation at the time”.
04The present conditional
stem (infinitive) + -ais / -ait / -ions / -iez / -aient
Il serait moins à l’aise pour les tâches personnelles comme réserver des billets.Key pointsThe conditional expresses possibility, supposition, unconfirmed information and polite requests (“would”, “might”). It uses the same stem as the future and the same endings as the imparfait (-ais, -ait, -ions, -iez, -aient): pouvoir → il pourrait. In the news it is used to avoid asserting, as in “is reported to…” or “there is a possibility…”.
05The present subjunctive
il faut que / pour que / bien que + subject + subjunctive
Anthropic a dévoilé le 21 octobre « Claude Duet », un agent d’IA qui surveille vos applications connectées et vous prévient sans que vous le demandiez.Key pointsThe subjunctive expresses wish, need, purpose, doubt and feeling rather than “fact”. It is used inside a clause with que. Triggers: il faut que (must), pour que / afin que (so that), bien que / quoique (although), avant que (before), souhaiter que, vouloir que and others. Formation: stem of the ils present minus -ent + -e, -es, -e, -ions, -iez, -ent. Irregular: être → soit, avoir → ait, aller → aille, faire → fasse, pouvoir → puisse, savoir → sache.
06The passive voice in the present
être (est / sont) + past participle (+ par / de)
Pas de prix séparé : il est compris dans l’abonnement.Key pointsThe passive means “is done” or “is being done”. It is formed with être + past participle, which agrees with the subject in gender and number (la mesure est adoptée / les mesures sont adoptées). The agent is introduced by par (or de). In the news it is common when the event, rather than the actor, is the focus (est prévu / est annoncé / est connu).
07The imperative
present vous form (-ez) / nous (-ons) / tu
Les détails (applications, régions) varient selon les articles ; consultez l’annonce officielle d’Anthropic.Key pointsThe imperative expresses commands, requests and advice. It has no subject: the sentence starts with the verb (Consultez les informations.). The vous form ends in -ez, nous in -ons (Restons prudents.), and tu in -e for -er verbs (Consulte). It is very common in notices and warnings (Vérifiez, Consultez, Restez informé).
08Negation and its scope
ne / n’ … pas · ne … plus
L’équilibre entre prévenir en premier et ne pas agir seul sur l’important est au cœur du concept.Key pointsNormally ne and pas wrap the verb. Before a vowel, ne becomes n’. Check which part of the sentence the negation covers. Ne … plus means “no longer”.
09Citing a source with selon
selon + noun / organisation
Selon la presse, il tourne dans sa propre machine virtuelle dans le cloud, avec un navigateur, et continue donc à travailler une fois l’ordinateur ou le téléphone fermé.Key pointsSelon means “according to”. Put a person or organisation after it as the source. It separates facts the writer checked directly from what another body or report said. Citing a source does not turn a forecast into an accomplished fact.
10Pouvoir: ability and possibility
peut / peuvent / pourrait + infinitive
Annoncé par Anthropic le 21 octobre : ce qu’est cet agent, qui peut l’utiliser et les limites.Key pointsPut a base-form verb after pouvoir. Peut means “can” or “may”; the conditional pourrait gives a more reserved possibility, “might”. It does not necessarily mean implementation is settled.
11Purpose with pour
pour + infinitive
Un « aperçu de recherche » est une version encore incomplète confiée à quelques utilisateurs pour recueillir des avis.Key pointsThis is the purpose, “in order to…”. Put the base form of a verb after pour. The purpose stated here is separate from whether the effect was actually achieved.
12The subject relative pronoun qui
noun + qui + verb
Anthropic a dévoilé le 21 octobre « Claude Duet », un agent d’IA qui surveille vos applications connectées et vous prévient sans que vous le demandiez.Key pointsQui continues a description of the person or thing just mentioned (“the one that does…”). Because qui is itself the subject of the next verb, do not repeat the subject. The verb agrees with the noun qui refers to.
Japanese grammar
Understand the structure and usage from the text.
01Citing a source: によると
noun + によると
報道によると、専用のクラウド上の仮想マシンで、ブラウザを使いながら動くため、利用者が、ノートパソコンやスマートフォンを閉じても、作業が続きます。Key pointsAs in “LCPによると”, it shows where the information comes from. What that source reported follows. It is used differently from “私にとって”, which gives one’s own opinion.
02Polite negation and plain form
〜ではありません / 〜ではない
航空券の予約のような、個人的な用事は、まだ得意ではないとも報じられています。Key pointsThey negate a noun and similar content. “ではありません” is the polite form and “ではない” the plain form. “成立ではありません” shows that it cannot be said to have been concluded.
03Cause or purpose with ため
〜ため / 〜ために
「試験版(リサーチ・プレビュー)」は、まだ完成していない段階で、一部の人に使ってもらい、意見を集めるためのものです。Key pointsため is used for both reason and purpose. “成立ではないため” is a reason and “運転手を守るため” a purpose. Decide from the whole sentence whether what precedes is a cause or a goal.
04Giving examples with など
noun / expression + など
WebのClaude.aiと、iOSなどのアプリで使えると、報道されています。Key points“暴言など” gives “abusive language” as one example. It is not necessarily a closed list of only the things named. It also helps when reading the scope of a news story.
05The polite past ました
verb stem (連用形) + ました
Anthropicが21日に発表しました。Key pointsIn “発表しました”, ました makes a verb polite past. The negative is “ませんでした”. Read the actual date together with the date and time in the text.
06Quoting with と: content and report
plain-form sentence + と + verbe de parole (報じる, 説明する…)
「先に連絡する」ことと、「勝手に重要なことをしない」ことの両立が、設計の中心だと説明されています。Key pointsと takes the content that is reported or explained. In “改定する方針だと報じました”, “改定する方針だ” is what the report said. Separating the content from who said it and how makes long sentences easier to read.