Anthropic said that Opus 4 “dramatically outperforms” previous models on memory capabilities, and it, and Sonnet 4, are 65% less likely than Sonnet 3.7 to use shortcuts or loopholes to ...

Anthropic says Claude Opus 4 and Sonnet 4 outperform rivals like OpenAI's o3 and Gemini 2.5 Pro on key benchmarks for agentic coding tasks like SWE-bench and Terminal-bench.

The $20/month Claude 4 Opus failed to beat its free sibling, Claude 4 Sonnet, in head-to-head testing. Here's how Sonnet quietly crushed expectations with smarter, safer code.

Large language model developer Anthropic PBC today rolled out its newest Claude 4 frontier models, starting with Opus 4 and Sonnet 4, which the company said set new standards for coding, advanced reas ...

Anthropic has launched two more Claude AI models: Claude Sonnet 4 and Claude Opus 4. Both Claude models feature web searches into their answers with extended thinking mode, currently in beta.

Anthropic claims Claude Opus 4 can compete with GPT-4.1 and Gemini 2.5, while Sonnet 4 outperforms its predecessor in reasoning and code generation ...

Claude Sonnet 4, which replaces Claude 3.7 Sonnet, is designed to offer faster response times while improving on reasoning, instruction following, and natural language fluency.

Contextual Persistence: Higher-agency systems maintain awareness of project goals across multiple interactions. While code ...

Anthropic is secretly working on new models called Claude Sonnet 4 and Opus 4, which are believed to be the company's most advanced AI models.