The $20/month Claude 4 Opus failed to beat its free sibling, Claude 4 Sonnet, in head-to-head testing. Here's how Sonnet ...

Free, Pro, Max, Team, and Enterprise Claude plans can access Claude Sonnet 4 and Opus 4 now, with an extended thinking mode ...

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

Anthropic's new Claude Opus 4 and Sonnet 4 AI models deliver state-of-the-art performance in coding and agentic workflows.

Anthropic has unveiled Claude Opus 4 and Claude Sonnet 4, next-generation AI models designed to enhance coding, reasoning, ...

Anthropic introduces Claude 4 Sonnet and Opus models with enhanced reasoning, coding abilities, and memory for sustained, ...

Today, on 22 May 2025, Anthropic introduced the next generation of Claude models: Claude Opus 4 and Claude Sonnet 4. These ...

Anthropic has introduced two advanced AI models, Claude Opus 4 and Claude Sonnet 4, designed for complex coding tasks.

Large language model developer Anthropic PBC today rolled out its newest Claude 4 frontier models, starting with Opus 4 and ...

With these upgrades, the Claude lineup aims to offer better models for developer tools and autonomous AI agents.