Claude Opus 4.6
Announcements Introducing Claude Opus 4.6 Feb 5, 2026 We’re upgrading our smartest model. The new Claude Opus 4.6 improves on its predecessor’s coding skills. It plans more carefully…
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What’s next?
Users will find Opus 4.8 to be a modest but tangible improvement on its predecessor. There’s still more to be done: we’re working on developing and releasing models that provide many of the same capabilities as Opus at a lower cost. Not only that, but we plan to release a new class of model with even higher intelligence than Opus. As part of Project Glasswing, a small number of organizations are currently using Claude Mythos Preview for cybersecurity work. Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on dev
Introducing Claude Opus 4.8Trustworthy agents in practice
…Most AI policy conversation today centers on the model, and understandably so. The model is where core capabilities come from, and as our most recent release showed, a single generation can meaningfully…
LLMs and biorisk
…When Anthropic released Claude Opus 4, we activated AI Safety Level 3 (ASL-3) protections, which included deployment measures narrowly focused on preventing the model from assisting with certain tasks related to…
Partnering with Mozilla to improve Firefox’s security
Policy Frontier Red Team Partnering with Mozilla to improve Firefox’s security Mar 6, 2026 AI models can now independently identify high-severity vulnerabilities in complex software. As we recently documented, Claude…
Emergent introspective awareness in large language models
Interpretability Signs of introspection in large language models Oct 29, 2025 Read the paper Have you ever asked an AI model what’s on its mind? Or to explain how it came…
Assessing Claude Mythos Preview’s cybersecurity capabilities
…In the short term, this could be attackers, if frontier labs aren’t careful about how they release these models. In the long term, we expect it will be defenders who will…
Introducing Sonnet 4.6
Product Introducing Claude Sonnet 4.6 Feb 17, 2026 Claude Sonnet 4.6 is our most capable Sonnet model yet . It’s a full upgrade of the model’s skills across coding…
AI agents find smart contract exploits
…To evaluate exploitation capabilities over time, we plotted the total exploit revenue of each model against its release date, using only the contracts that were exploited after their knowledge cutoffs to control…
Claude for Creative Work
…Today, we’re releasing a set of connectors—tools that let Claude work alongside the software creative professionals rely on, so creatives can extend their reach. Connecting Claude to creative tools Connectors…
Anthropic expands partnership with Google and Broadcom for multiple gigawatts of next-generation compute
…This significant expansion of our compute infrastructure will power our frontier Claude models and help us serve extraordinary demand from customers worldwide. “This groundbreaking partnership with Google and Broadcom is a continuation…