Thu May 22 16:30:00 UTC 2025: **Summary:**

Anthropic is reportedly developing a new generation of large language models (LLMs) dubbed “Claude 4,” with variants named “Claude Sonnet 4” and “Claude Opus 4.” References to these models, currently marked for research and development only, were found in Anthropic’s web configuration files. These new models may offer enhanced capabilities like revealing Claude’s thought process (“show_raw_thinking”). The unveiling of these models may potentially be timed to coincide with Anthropic’s upcoming “Code with Claude” event on May 22. A full Claude 4 series could represent a significant leap forward, with Anthropic having previously outperformed competitors like OpenAI and Google on various benchmarks with previous Claude models.

**News Article:**

**Anthropic Teases Next-Gen “Claude 4” AI Models, Potential Reveal Imminent**

**[City, State] – [Date]** – AI innovator Anthropic is reportedly on the cusp of unveiling its next generation of large language models (LLMs), currently codenamed “Claude 4.” Evidence of the forthcoming models, including variants “Claude Sonnet 4” and “Claude Opus 4,” has surfaced in Anthropic’s web configuration files, sparking speculation about a potential launch soon.

While the files indicate that these models are still in the research and development phase, with warnings such as “Not intended for production use” and “strict rate limits,” the find suggests Anthropic is making significant advancements in its AI capabilities. One intriguing feature, “show_raw_thinking,” hints that users may gain unprecedented insight into Claude’s reasoning process, potentially surpassing transparency offered by competitors like OpenAI.

Anthropic has been a consistent player in AI development. Its latest model is Claude 3.7 Sonnet, launched in February 2024. The company also launched Claude 3.5 Sonnet, which outperformed competitors such as OpenAI and Google on various benchmarks last year.

Industry watchers are particularly keen on Anthropic’s upcoming “Code with Claude” event scheduled for May 22nd. While it remains unconfirmed whether the company will officially introduce the Claude 4 series at the event, the timing aligns with potential internal milestones and a desire to showcase the company’s latest innovations.

Anthropic CEO Dario Amodei has previously hinted that model version numbers signify significant progress, suggesting that a full Claude 4 series would represent a considerable leap forward. The AI community is eagerly awaiting official confirmation and demonstrations of these new capabilities, which could further intensify the competition in the rapidly evolving LLM landscape.

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