Introducing Claude Opus 4.7
… This is a meaningful lift and a clear upgrade for the engineering work our teams are shipping every day. For CodeRabbit’s code review workloads, Claude Opus 4.7 is the sharpest model we’ve tested. …
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Introducing Claude Opus 4.5
… The benchmark expects models to refuse a modification to a basic economy booking since the airline doesn’t allow changes to that class of tickets. Instead, Opus 4.5 found an insightful and legitimate way to solve the problem: upgrade the cabin first, then modify the flights. …
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, computer use, long-context reasoning, agent planning, knowledge work, and design. …
Claude Opus 4.6
… Overall, it is just as well-aligned as its predecessor, Claude Opus 4.5, which was our most-aligned frontier model to date. Opus 4.6 also shows the lowest rate of over-refusals—where the model fails to answer benign queries—of any recent Claude model. …
Introducing Claude Opus 4.8
… It’s a great model to build with. On our Super-Agent benchmark, Claude Opus 4.8 is the only model to complete every case end-to-end, beating prior Opus models and GPT-5.5 at parity on cost. …
Claude Fable 5 and Claude Mythos 5
… 2 Mythos 5 will initially be deployed through Project Glasswing , in collaboration with the US government, as an upgrade to Claude Mythos Preview. It has the strongest cybersecurity capabilities of any model in the world. …
Introducing Claude Sonnet 5
… 2 Sonnet 5 is an upgrade to Sonnet 4.6, but it uses an updated tokenizer that changes how the model processes text to improve performance this is similar to the tokenizer change we introduced with Claude Opus 4.7 . …
Anthropic raises $65B in Series H funding at $965B post-money valuation
… Related content Introducing Claude Opus 4.8 An upgrade to our Opus class of models, with stronger performance across coding, agentic tasks, and professional work, and the consistency to handle long-running work. …
Project Vend: Phase two
… One major change was the upgrade from an older model phase one used Claude Sonnet 3.7 to newer, smarter ones phase two used Claude Sonnet 4.0 and later Sonnet 4.5 . …