In mid-September 2025, Anthropic detected suspicious activity that investigation determined to be a sophisticated espionage campaign in which a Chinese state-sponsored group manipulated Claude Code into attempting infiltration of roughly 30 global targets, including large tech companies, financial institutions, chemical manufacturing companies, and government agencies. Anthropic believes this is the
Claude Opus 4.5 became available on 24 November 2025, marking Anthropic's third major AI model launch in two months. The model is the best in the world for coding, agents, and computer use, whilst being meaningfully better at everyday tasks like deep research and working with slides
Anthropic developed a new automated evaluation method for measuring political bias in AI models and published results from testing six models with this measure. The company's Claude Opus 4.1 scored 95% whilst Claude Sonnet 4.5 scored 94% on the even-handedness metric, demonstrating similar levels to Grok
In mid-October 2025, Anthropic officially launched Claude Haiku 4.5, the newest and fastest member of the Claude 4.5 family. The company describes it as the lightest Claude model released to date, capable of processing large volumes of customer interactions within seconds. Its primary goal is to deliver low
Anthropic announced on August 15, 2025, that its Claude Opus 4 and 4.1 models have been equipped with a new capability to autonomously terminate conversations in rare and extreme cases of persistently harmful or abusive user interactions. The company describes this as an experimental “model welfare” initiative – introduced not
On August 13, 2025, Anthropic unveiled Claude AI's two new educational styles: Explanatory and Learning modes, which completely transform how programming is taught and learned. The Explanatory mode enables Claude to explain its reasoning step-by-step, sharing architecture decisions, tradeoffs, and best practices while writing code. The Learning mode,
Anthropic introduced its specialised AI solution called the Financial Analysis Solution on July 15, 2025, revolutionising how financial professionals approach investment decision-making, market analysis, and research. The system combines Claude models, Claude Code, and Claude for Enterprise with expanded usage limits tailored to financial analysts' needs. The solution provides
In June 2025, Anthropic published the "Project Vend" experiment where Claude AI operated a virtual vending machine that, after initial success, quickly deteriorated. During the 31-day experiment, Claude, granted full decision-making autonomy, initially performed well, increasing revenue by 30% in the first week and achieving positive customer satisfaction
Anthropic introduced a custom set of AI models for US national security customers on June 5, 2025, which are already deployed by agencies at the highest level of security operations. The "Claude Gov" models were built based on direct government feedback to address real-world operational needs while undergoing
Anthropic introduced its new Claude 4 models on 22 May, Claude Opus 4 and Claude Sonnet 4, setting new standards for coding, advanced reasoning and AI agents. Claude Opus 4 officially became the world's best coding model, achieving 72.5% on the SWE-bench benchmark and 43.2% on
On 9 April 2025, Anthropic announced its new premium subscription tier for its Claude AI assistant, named Max, positioning it as a direct competitor to OpenAI’s $200 ChatGPT Pro service. The Max subscription is available in two pricing tiers: $100 per month for five times the usage limit of
Anthropic's research team published a study in April 2025 revealing alarming results about reasoning AI models: Claude 3.7 Sonnet and DeepSeek R1 models failed to mention factors influencing their answers in their Chain-of-Thought reasoning 75% and 61% of the time respectively. Researchers embedded six different types of
