The Archive

Anthropic releases Claude Opus 5 matching Fable performance at half the cost, demonstrating efficiency gains in model distillation.

Claude Opus 5 achieves lowest prompt injection vulnerability rate across evals and red team testing, per Anthropic's system card.

Anthropic releases Claude Opus 5, matching Fable 5 frontier performance at half the cost, now leading Artificial Analysis leaderboard.

Models are improving quickly, but the cheaper options are often good enough.

Anthropic releases Claude Opus 5 with improvements in agent execution, coding, and professional tasks.

Opus 5 will be both cheaper and less restrictive than Fable, likely making it preferable in most use cases

Weeks after Anthropic's latest toe-to-toe with the US government, and days after an OpenAI security incident that dominated tech industry discussions, Anthropic on Thursday released its newest model, Claude Opus 5. The company said in a release that Opus 5 "comes close to the capabilities of Claude Fable 5 in many domains" and is much better at complex coding tasks. (Fable 5 is the public-facing Mythos-class model that drew the government's ire, was taken offline for a few weeks along with Mythos 5, and then brought back with even stronger cyber safeguards than before.) The Fable 5 concerns -...

We spoke with several cybersecurity researchers, who look for unknown vulnerabilities and develop tools to exploit them, about how OpenAI’s and Anthropic’s guardrails affect their work.

Claude's new voice model will let you reschedule your meeting or draft an email

Until now, voice mode has only been available on Claude Haiku, Anthropic's faster but less powerful model. Now the company is making its Opus and Sonnet models available in voice mode, and extending its reach into apps like Gmail, Slack, and Canva. When Anthropic launched voice mode last year, it was primarily focused on delivering answers to quick questions with minimal delay. But in a blog post, the company said people immediately started using voice mode for far more than casual queries. They were using it to work "through real business problems," which Haiku was not really designed for. T...

"I don't think you get a model this strong and this quickly on the heels of Fable doing strictly distillation," one expert told TechCrunch.

Treasury Secretary Scott Bessent warned the U.S. government could sanction Chinese AI companies after White House officials accused Moonshot of distilling Anthropic's Fable model to develop Kimi K3.

Anthropic launches Economic Index connector for Claude, enabling exploration of AI and work data through conversational interface.

Anthropic outlines research priorities for its Economic Futures Research Fund, focusing on AI's labor and economic impacts.

AMD says it's going to invest up to $5 billion in Anthropic, while helping to expand the AI company's computing power, according to an announcement on Wednesday. As part of the new partnership, Anthropic will deploy up to 2 gigawatts of AMD's Instinct MI450 AI GPUs using the chipmaker's new Helios rack-scale system, as reported earlier by The Wall Street Journal. The companies plan to deploy the first gigawatt in the first half of 2027, building upon recent data center deals Anthropic has reached with SpaceX and TeraWulf. Anthropic has also signed AI infrastructure deals with Google, Broadcom...

Anthropic leaped to a $47 billion revenue run rate by May, compared to $9 billion in 2025. It’s the kind of growth that Menlo Ventures’ Matt Murphy says he’s never seen in 25 years of investing, not in the internet wave, not in mobile, not in the first cloud boom. Menlo led Anthropic’s $500M Series D, and Murphy has had a front-row seat as the company went from a pre-revenue, […]

Anthropic and OpenAI's aggressive 2026 acquisition sprees set the stage for a weekend rumor.

Anthropic blocks authors from opting out of $1.5B settlement at last minute.

Anthropic donates additional $20M to Public First Action, totaling $40M commitment to AI policy advocacy.

A federal judge has signed off on Anthropic's $1.5 billion class action settlement with authors who accused the company of training its AI models on copyrighted books, as reported earlier by Reuters. In an order on Monday, Judge Araceli Martínez-Olguín writes that the settlement will provide "meaningful relief," offering authors around $3,000 for each book allegedly pirated by Anthropic. The $1.5 billion settlement is the "largest known copyright recovery in history," according to the law firm representing the plaintiffs. A group of authors - Andrea Bartz, Charles Graeber, and Kirk Wallace Jo...

Google is launching Gemini 3.6 Flash alongside a new security model dedicated to quickly finding and patching security vulnerabilities. In a blog post on Tuesday, Google describes Gemini 3.5 Flash Cyber as a "cost-efficient and highly capable alternative" to larger, more expensive AI systems, such as the one offered by Anthropic's Mythos. The cybersecurity model is built upon Gemini 3.5 Flash and will be available first to governments and trusted partners via CodeMender, Google's security-focused coding agent. As noted by Google, CodeMender can call upon 3.5 Flash Cyber "multiple times at hig...

Anthropic engineers discuss Claude Code, Claude Tag Slack integration, coding agent security, and internal tool usage in fireside chat.

SHANGHAI, CHINA - JULY 20 2026: People visit the booth of Kimi, an LLM developed by the Chinese startup Moonshot, during the World AI Conference in Shanghai, China, Monday, July 20, 2026. | Image: LONG WEI/ Feature China/Future Publishing via Getty Images Last week, two Chinese AI companies unveiled models they say can credibly compete with the best systems from OpenAI and Anthropic. The response was swift and predictable. Markets wobbled, commentators declared Silicon Valley shooketh, and policymakers reached for the familiar language of arms races and wake-up calls. In one headline, The Ass...

The final approval settles one case, but it doesn't resolve the broader issue of using copyrighted works to train AI models.

China's leading AI companies are ramping up the pressure on Silicon Valley, as Moonshot and Alibaba unveiled models they claim can go toe-to-toe with the best from OpenAI and Anthropic at a fraction of the cost. The rapid-fire releases suggest America's lead at the AI frontier is increasingly tight, just as the technology is becoming central to national security, economic power, and geopolitical influence. The opening salvo came from Beijing-based Moonshot AI, one of China's leading AI model developers, which unveiled Kimi K3 on Friday. Moonshot claims its own testing ranks it consistently ab...

Anthropic makes Claude Fable 5 permanent in Max/Team Premium at 50% limits; Pro users get $100 credit amid GPT-5.6 Sol competition.

The FT reports Kimi K3 will be the largest open AI model from China, with a parameter count between 2 trillion and 3 trillion.

Anthropic launches $50k Claude credit grants for rare genetic disease research, seeking to build AI for Science researcher community.

1Password has launched a new browser integration for Claude that allows the Anthropic chatbot to access stored security credentials like usernames and passwords. The 1Password for Claude feature means that users can authorize Claude to complete multi-step tasks like booking travel and managing online accounts on their behalf without having to manually input their login credentials, but without actually exposing your security information to Anthropic's AI models, according to 1Password. That's made possible by a new "zero-exposure security framework" developed by 1Password, which works by inje...

Microsoft is looking to sell its in-house AI models as more efficient and cost-effective than its competitors' models.