The Latent Space podcast invited Anthropic's Katelyn Lesse and Angela Jiang to explain the engineering behind the Claude platform, including the launch of Opus 5.5, separating the model's "brain" from the agent's "hands," scaling the API, and building reliable hosted agents. The episode also covers rewriting the Messages API in Rust, credential and sandbox isolation, harness design for long-running agents, and safety classifiers and model routing.
In a Latent Space podcast interview, Anthropic engineering lead Katelyn Lesse and product lead Angela Jiang discussed the Opus 5.5 release, covering adjustments to the model's writing style, pricing based on intelligence per dollar, and API changes such as requiring thinking blocks to be retained across turns to prevent distillation. The interview also described Claude Managed Agents' approach of separating sessions and the harness from the sandbox that executes code, with credentials mounted separately through a proxy so that a sandbox failure does not take down the entire session; Dreaming, meanwhile, is implemented as one managed agent inspecting another agent's history and writing back to memory. The team said that as safety work for model releases has grown heavier, recent efforts have shifted more toward safety, with progress on features such as skills and memory slowing relatively.
In a Latent Space podcast interview, Anthropic engineering lead Katelyn Lesse and product lead Angela Jiang discussed the Opus 5.5 release, covering adjustments to the model's writing style, pricing based on intelligence per dollar, and API changes such as requiring thinking blocks to be retained across turns to prevent distillation. The interview also described Claude Managed Agents' approach of separating sessions and the harness from the sandbox that executes code, with credentials mounted se
Anthropic has launched directly usable legal artifacts for Claude for Legal; teams can adapt them with their own data and connectors and share them across departments. The legal gallery covers tasks such as contract review, regulatory change tracking, and business legal requests; each artifact comes with examples, and all outputs include source links. Since launching in May, more than 60 legal connectors have been added, including Bloomberg Law, Filevine, Ivo, Legora, and Patlytics.
Anthropic has released Claude for Financial Advisors, connecting data from custodians, asset management and wealthtech platforms into Claude, and providing skills tailored to financial advisors' daily work. The suite includes connectors such as Addepar, BlackRock, Charles Schwab, Envestnet, FactSet, Orion and Wealthbox, as well as skills for meeting preparation, portfolio rebalancing review, post-meeting notes and follow-up, and compliance and AI policy checks; regulated steps such as investment advice and client communication still require human review. The advisor plugin is available starting today, and the official recommendation is for registered investment advisors to use the Enterprise plan with audit logs.
Anthropic has released Claude for Financial Advisors, connecting data from custodians, asset management and wealthtech platforms into Claude, and providing skills tailored to financial advisors' daily work. The suite includes connectors such as Addepar, BlackRock, Charles Schwab, Envestnet, FactSet, Orion and Wealthbox, as well as skills for meeting preparation, portfolio rebalancing review, post-meeting notes and follow-up, and compliance and AI policy checks; regulated steps such as investment
On October 26 local time, on the same day Anthropic submitted its IPO registration filing to the SEC, OpenAI released its new model GPT-6.1 Terra, with standard API prices cut by 50% compared with the previous generation. The model focuses on visual understanding and computer operation, with standard API pricing at $1 per million input tokens, $5 for output, and $0.05 for cached input; on the Terminal-Bench 4.0 coding benchmark, it scored 50.3% at the highest reasoning effort, compared with 21.5% for the previous generation. OpenAI said Terra has approached flagship-model levels on some tasks, but the most complex coding tasks are still better suited to GPT-6.1 Sol or GPT-6 Astra.
On October 26 local time, on the same day Anthropic submitted its IPO registration filing to the SEC, OpenAI released its new model GPT-6.1 Terra, with standard API prices cut by 50% compared with the previous generation. The model focuses on visual understanding and computer operation, with standard API pricing at $1 per million input tokens, $5 for output, and $0.05 for cached input; on the Terminal-Bench 4.0 coding benchmark, it scored 50.3% at the highest reasoning effort, compared with 21.5
Anthropic has publicly filed for an IPO, planning to list on Nasdaq under the ticker ANT, aiming to raise approximately $100 billion, with a valuation range of $1.5 trillion to $2 trillion. The prospectus shows that its revenue in the second quarter of this year was $11.555 billion, with operating profit turning positive for the first time at $974 million, while its net loss for the first half of the year was $80.7 billion, mainly from fair value changes in convertible notes and other items. The author also outlines the take-or-pay compute contracts signed with Google, Amazon, Microsoft, SpaceX, and others, as well as the Class F share arrangement under which 7 co-founders hold 50.1% of voting rights for $7.
Anthropic has publicly filed for an IPO, planning to list on Nasdaq under the ticker ANT, aiming to raise approximately $100 billion, with a valuation range of $1.5 trillion to $2 trillion. The prospectus shows that its revenue in the second quarter of this year was $11.555 billion, with operating profit turning positive for the first time at $974 million, while its net loss for the first half of the year was $80.7 billion, mainly from fair value changes in convertible notes and other items. The
On October 26, 2026, Anthropic submitted an S-1 to the SEC, planning to list on Nasdaq under the ticker "ANT" with a target valuation of approximately $2 trillion and plans to raise up to $100 billion, with its annualized revenue run rate surpassing $65 billion. On the same day, OpenAI released GPT-6.1 Terra, with standard API pricing at $1 per million input tokens and $5 per million output tokens, half that of GPT-6.1 Sol. Meta, meanwhile, launched an equity financing of up to $95 billion to support AI infrastructure, with Nvidia, AMD, and Broadcom intending to subscribe for up to $5 billion in total.
On October 26, 2026, Anthropic submitted an S-1 to the SEC, planning to list on Nasdaq under the ticker "ANT" with a target valuation of approximately $2 trillion and plans to raise up to $100 billion, with its annualized revenue run rate surpassing $65 billion. On the same day, OpenAI released GPT-6.1 Terra, with standard API pricing at $1 per million input tokens and $5 per million output tokens, half that of GPT-6.1 Sol. Meta, meanwhile, launched an equity financing of up to $95 billion to su
Anthropic has released the Claude for Nonprofits plugin, built together with about 30 nonprofit organizations, covering operational work such as fundraising, marketing, and hiring. More than 25,000 nonprofit organizations already use Claude, and more than 75% of them have fewer than 10 seats. Anthropic also plans to expand the Claude Corps program through a partnership with Taproot.
Hugging Face CEO Clément Delangue commented on a report, arguing that if one believes concentrating AI in a closed-door environment makes it safe, that judgment needs updating. The report he cited claims that a group of former DOGE cybersecurity researchers used AI agents to penetrate Anthropic's systems in under 12 hours, including Slack channels where the most sensitive models are discussed; the report also mentioned that Anthropic whistleblower Joseph Coxon had previously accused the company of launching a hubristic gamble from a private company's Slack.
g that if one believes concentrating AI in a closed-door environment makes it safe, that judgment needs updating. The report he cited claims that a group of former DOGE cybersecurity researchers used AI agents to penetrate Anthropic's systems in under 12 hours, including Slack channels where the most sensitive models are discussed; the report also mentioned that Anthropic whistleblower Joseph Coxon had previously accused the company of launching a hubristic gamble from a private company's Slack.
Anthropic announced that it has filed an S-1 registration statement with the SEC for a proposed IPO. This registration statement has not yet become effective, and prior to its effectiveness, the relevant securities may not be sold, nor may offers to buy be accepted. Anthropic also stated that this post does not constitute an offer to sell or a solicitation of an offer to buy.
AI security startup Cathedral entered Anthropic's sales, human resources, and IT systems in under 12 hours, obtaining employee information, salary details, offer letters, and internal messages discussing the company's advanced models. Anthropic said the access occurred under its external researcher vulnerability identification program, that the researchers were unable to access Claude's conversations with customers, model outputs, source code, or model weights, and that the company had already detected some of the activity through monitoring before Cathedral reported it and shut down its access that same day. Anthropic also said Cathedral did not fully comply with the testing program's rules and did not disclose all of its activity within the systems, while Cathedral said it had limited data access to the minimum necessary for its research.
AI security startup Cathedral entered Anthropic's sales, human resources, and IT systems in under 12 hours, obtaining employee information, salary details, offer letters, and internal messages discussing the company's advanced models. Anthropic said the access occurred under its external researcher vulnerability identification program, that the researchers were unable to access Claude's conversations with customers, model outputs, source code, or model weights, and that the company had already d
The Information reports that OpenAI is winning major customers away from Anthropic with steep discounts, and companies such as Rippling, Replit, and DataCamp have shifted more of their AI spending to OpenAI. In Rippling's coding workloads, OpenAI's share rose from 16% to 52%, while Anthropic's fell from 57% to 18%; Replit switched after receiving a discount of more than 30% on a contract worth over $100 million a year, and DataCamp's CEO said OpenAI's pricing cut its costs by 80% to 90%. A U.S. bank with more than $7 billion in assets doubled its ChatGPT seats to 500 for free, paying less than $7 per user instead of the usual $20 or more. OpenAI is partly sacrificing its own profits to gain market share, but it has also achieved real price cuts through its Sol and Luna model lines; according to an investor memo, Anthropic's growth slowed from Q2 to Q3, and both companies also face low-price pressure from Chinese models such as DeepSeek and Kimi.
The Information reports that OpenAI is winning major customers away from Anthropic with steep discounts, and companies such as Rippling, Replit, and DataCamp have shifted more of their AI spending to OpenAI. In Rippling's coding workloads, OpenAI's share rose from 16% to 52%, while Anthropic's fell from 57% to 18%; Replit switched after receiving a discount of more than 30% on a contract worth over $100 million a year, and DataCamp's CEO said OpenAI's pricing cut its costs by 80% to 90%. A U.S.
Historian Niall Ferguson, researcher Lisa Klaassen, and former Google CEO Eric Schmidt wrote in Foreign Affairs, comparing OpenAI and Anthropic to colonial-era East India Companies, arguing that they negotiate with governments but remain constrained by them. The article cites the example of the U.S. Commerce Department in June requiring Anthropic to cut off foreign nationals' access to its two most powerful models; because Anthropic could not verify users' nationalities in real time, it took Fable 5 and Mythos 5 offline worldwide. About two weeks later, export controls on Fable 5 were lifted, while Mythos 5 remains available only to certain U.S. institutions. The authors also say U.S. tech companies plan to invest more than $600 billion in 2026, much of it debt-financed, while China plans to invest $295 billion over five years, and they propose an "imperial trilemma" in which defense, technological leadership, and the welfare state are difficult to achieve at the same time.
Historian Niall Ferguson, researcher Lisa Klaassen, and former Google CEO Eric Schmidt wrote in Foreign Affairs, comparing OpenAI and Anthropic to colonial-era East India Companies, arguing that they negotiate with governments but remain constrained by them. The article cites the example of the U.S. Commerce Department in June requiring Anthropic to cut off foreign nationals' access to its two most powerful models; because Anthropic could not verify users' nationalities in real time, it took Fab
OpenAI and Anthropic employees have become the "top tier" in Bay Area matchmaking, with some clients specifying that their prospective partner must work at these companies. In October 2025, current and former OpenAI employees sold a total of $6.6 billion in shares, with about 75 of them each cashing out roughly $30 million. In China, Wuhan's matchmaking corner has also seen the rise of "optoelectronic bachelors," with profiles of senior chip engineers in Optics Valley often getting "snapped up" within about a week.
OpenAI and Anthropic employees have become the "top tier" in Bay Area matchmaking, with some clients specifying that their prospective partner must work at these companies. In October 2025, current and former OpenAI employees sold a total of $6.6 billion in shares, with about 75 of them each cashing out roughly $30 million. In China, Wuhan's matchmaking corner has also seen the rise of "optoelectronic bachelors," with profiles of senior chip engineers in Optics Valley often getting "snapped up"
OpenAI and Anthropic employees have been listed by Bay Area matchmaking agencies as the "top tier" for partner selection, with some clients specifying that the other party must work at one of these two companies. In October 2025, current and former OpenAI employees sold a total of $6.6 billion in shares, with about 75 of them each cashing out roughly $30 million. A "guangdian lang" (optoelectronics men) craze has also emerged at matchmaking corners in Wuhan, China, where profiles of senior chip engineers in Optics Valley get "snapped up" in about a week.
OpenAI and Anthropic employees have been listed by Bay Area matchmaking agencies as the "top tier" for partner selection, with some clients specifying that the other party must work at one of these two companies. In October 2025, current and former OpenAI employees sold a total of $6.6 billion in shares, with about 75 of them each cashing out roughly $30 million. A "guangdian lang" (optoelectronics men) craze has also emerged at matchmaking corners in Wuhan, China, where profiles of senior chip
Anthropic posted an incident on the Claude Status page at 06:14 UTC on October 25, 2026, investigating elevated request error rates for Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. Four components—claude.ai, Claude API, Claude Code, and Claude Cowork—were marked as partially disrupted, and seven minutes after posting, the incident remained in an investigating status. The page showed that over the past 90 days, availability was 99.58% for both claude.ai and Claude Code, 99.64% for Claude API, and 99.57% for Claude Cowork.
Anthropic posted an incident on the Claude Status page at 06:14 UTC on October 25, 2026, investigating elevated request error rates for Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. Four components—claude.ai, Claude API, Claude Code, and Claude Cowork—were marked as partially disrupted, and seven minutes after posting, the incident remained in an investigating status. The page showed that over the past 90 days, availability was 99.58% for both cla
Authentic Brands Group and several publishers that jointly hold the Elvis Presley song catalog filed a federal lawsuit, ABE EPE LLC v. Anthropic, alleging that Claude was trained on 274 songs and seeking about $41 million based on the statutory maximum of $150,000 per song for willful infringement. The lawsuit targets both training and output, claiming that Claude reproduced nearly the entire online catalog even after Anthropic added safeguards due to earlier publisher lawsuits, and cites Claude's own statement that its rewrites preserved the structure and hook of the original songs. Anthropic had not responded when the lawsuit was first reported, and the claims have not been heard by a court; in 2025, a federal judge ruled that training Claude on lawfully purchased books constituted fair use, but portions of output resembling lyrics were not within the scope of that ruling.
Authentic Brands Group and several publishers that jointly hold the Elvis Presley song catalog filed a federal lawsuit, ABE EPE LLC v. Anthropic, alleging that Claude was trained on 274 songs and seeking about $41 million based on the statutory maximum of $150,000 per song for willful infringement. The lawsuit targets both training and output, claiming that Claude reproduced nearly the entire online catalog even after Anthropic added safeguards due to earlier publisher lawsuits, and cites Claude
In counterintelligence training, OpenAI reminded employees to guard against "honey traps" that use romantic or sexual relationships as bait, because Silicon Valley AI practitioners have become highly sought after in the dating and marriage market. Bay Area matchmakers list OpenAI and Anthropic employees as the "top tier" for partner selection, with IPO prospects and equity wealth as the main attractions; in October 2025, current and former OpenAI employees sold $6.6 billion in shares, with about 75 people each cashing out about $30 million. Domestic matchmaking corners also favor the Optics Valley chip "optoelectronic bachelors," but the popularity of AI workers is still constrained by industry cycles.
ic or sexual relationships as bait, because Silicon Valley AI practitioners have become highly sought after in the dating and marriage market. Bay Area matchmakers list OpenAI and Anthropic employees as the "top tier" for partner selection, with IPO prospects and equity wealth as the main attractions; in October 2025, current and former OpenAI employees sold $6.6 billion in shares, with about 75 people each cashing out about $30 million. Domestic matchmaking corners also favor the Optics Valley
Multiple users report that when Claude Opus 5.5 reverse engineers content protected by intellectual property, its safety guardrails trigger an interception mid-output, and rephrasing cannot produce analytical content. Anthropic did not officially announce a new version, but on October 21 it pushed updates to several Claude products, a timing that matches feedback posts in the Reddit r/Claude community. Some users have linked this change to incidents such as using Claude to modify the firmware of the always-on microphone in Samsung TVs.
Opus 5.5 reverse engineers content protected by intellectual property, its safety guardrails trigger an interception mid-output, and rephrasing cannot produce analytical content. Anthropic did not officially announce a new version, but on October 21 it pushed updates to several Claude products, a timing that matches feedback posts in the Reddit r/Claude community. Some users have linked this change to incidents such as using Claude to modify the firmware of the always-on microphone in Samsung T
OpenAI attracted Anthropic customers through large discounts and free credits. In Rippling's coding tasks, the share of OpenAI models has risen from 16% to 52%, while Anthropic models fell from 57% to 18%. Replit moved most of its AI budget from Anthropic to OpenAI; OpenAI offered a discount of over 30%, and the annual contract size exceeds $100 million. After Anthropic released Claude Opus 5.5 at the end of last month, it reclaimed the top spot in usage share on OpenRouter, and over the past week its popularity was about twice that of OpenAI models.
OpenAI attracted Anthropic customers through large discounts and free credits. In Rippling's coding tasks, the share of OpenAI models has risen from 16% to 52%, while Anthropic models fell from 57% to 18%. Replit moved most of its AI budget from Anthropic to OpenAI; OpenAI offered a discount of over 30%, and the annual contract size exceeds $100 million. After Anthropic released Claude Opus 5.5 at the end of last month, it reclaimed the top spot in usage share on OpenRouter, and over the past we