If you're not familiar with Claude, it's the family of large-language models made by the AI company Anthropic. And Claude ...

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Both models are accessible via the Claude Pro, Max, Team, and Enterprise plans, with Sonnet 4 also available to free-tier users. Pricing remains unchanged from the previous generation.

Anthropic unveiled its new AI models, Claude Sonnet 4 and Claude Opus 4. The launch comes at a time when the company needed a strong response to maintain its position against rivals like Google Gemini ...

Both models are reportedly 65% less likely to use shortcuts or exploit loopholes compared to the earlier Sonnet 3.7, especially on agentic tasks. Early partners have provided positive feedback.

Both new models are 65% less likely to engage in this behavior than Sonnet 3.7 on agentic tasks that are mainly susceptible to shortcuts and loopholes.

Another improvement in both models is a 65% reduction in reward hacking -- a behavior where the model takes shortcuts to complete a task -- compared to Claude Sonnet 3.7, particularly on agentic ...

The company adds that both models are 65 percent less likely to take shortcuts and loopholes to complete tasks compared to 3.7 Sonnet and they’re better at storing key information for long-term ...

The company also says that both Claude 4 Opus and Claude Sonnet 4 are 65 percent less likely to engage in this behavior, known as reward hacking, than prior models—at least on certain coding tasks.