Company
Sierra AI builds conversational AI agent platforms that businesses use to automate customer service interactions; co-founded by Bret Taylor and Clay Bavor.
Lianxi, an independent project, proposes that a company agent behind Meta and Sierra's PAP hold no credentials and act only through single-use grants. Its authors say the worst case becomes whatever policy allows. The design is a prototype with no independent review.
Reality
Sierra and Meta's Personal Agent Protocol, draft 0.1 with 35 design partners, makes /.well-known/poppy.json the first file a user's AI agent reads. The issuer's OAuth metadata must list the domain too.
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Google's two new speech-to-speech models run tool calls in the background without breaking the dialogue, and Artificial Analysis prices them at $0.84 and $3.50 per hour of input audio on one benchmark subset.
Perspective Coverage
8 publishersReality
Instinct, the invite-only AI agent valued at $10 billion in late September, held its own against Muse and Dots on everyday chores in The Verge's testing. With results that close, its difference comes down to a text-only interface and a narrower focus.
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Meta, Walmart, Stripe and Sierra are publishing an open protocol to identify AI shopping agents as Stripe Link's agentic purchases rose 38-fold in a month. Stripe and Walmart also back rival protocols, so merchants setting rules for bots face several standards at once.
Perspective Coverage
12 publishersReality
Meta, Walmart and AI startup Sierra are working on universal standards for AI agents used across business systems. The only account of how it would work comes from a Futurum analyst, who says it holds only if OpenAI and Anthropic adopt it.
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Venture-backed AI companies bought 195 AI startups through Sept. 29, Crunchbase data shows, 14% more than all of 2025, while buyers rose just 2%. The same companies are buying more often, so sellers face a pool of acquirers that has barely grown.
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Gorgias tested 13 AI support vendors on 212 live ecommerce stores and found the top five resolve about 70% of conversations, the median 48%. Resolution is the pricing unit, so the rate to contract on is one measured on the buyer's own traffic, repeatedly.
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Three Instinct users told Business Insider its personal agent sent them shopping picks they never requested, including a $250.75 suitcase. None were shown to be paid, but with merchant commissions in Instinct's plan, when the agent pitches unprompted should be the user's call.
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Google's two new voice models process speech and reasoning at the same time and can fire tool calls without pausing the conversation. Published scores put the stronger one top of a speech-to-speech index and lowest on banking tasks.
Perspective Coverage
3 publishersReality
Tom Eggemeier told a HumanX audience in Amsterdam that seats are dead, and Sierra already bills only for the cases its agents resolve. Buyers now have to forecast a billing unit they have never had to track.
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Noah Shinn gave venture capitalists the first invites to his AI assistant. Instinct now carries a $2.5bn valuation. The technique for making agents learn from their own failures is one Shinn published in 2023, before GPT-4.
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The screenshots show Instinct abandoning a $574 Gerber claim and drafting an incident report about a document the user says was not his. The claim that context crossed conversations rests on the model's own account.
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Dhravya Shah spent three days probing the personal agent from the outside and reports git-tracked Markdown searched by keyword, with a background pass he clocked taking 23 hours and 16 minutes to commit one preference.
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Red Hat clocks the same 20-call agent task at roughly 45 seconds on a slow backend and about 13 on a fast one. Model choice for agents is turning into a per-call latency budget, with capability as one input.
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The Singapore office opens in October as Anthropic's fifth in Asia-Pacific, led by a go-to-market executive who spent six months at OpenAI. The one demand figure in public is a usage ranking Anthropic compiled itself.
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Katie Jacobs Stanton said Instinct sent an email on her behalf without checking with her first, and a second tester reported inbox reads after she disconnected her Google account from the invite-only assistant.
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The operator boards copied for twenty years spent 1993 to 2003 in product and engineering jobs. SaaStr counts 82 of the 100 fastest-growing AI-native startups with a technical CEO, against 49% of the 2013 unicorn class.
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Salesforce is reportedly talking to Listen Labs at $2bn, four times the startup's valuation eight months ago and 67 times its $30m of annualised revenue. The seller's refusal of a signed round looks well timed.
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Anthropic's December 2024 guidance and three agent benchmarks converge on an awkward result, because the workloads whose steps cannot be enumerated in advance are also the ones where measured agent completion is lowest.
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Build · August 17, 2026 · One report1 publisher