Anthropic has officially released Claude 4, the latest generation of its AI assistant, featuring significant advances in multi-step reasoning, code generation, and long-context understanding. The model demonstrates a 35 percent improvement on graduate-level reasoning benchmarks compared to its predecessor and can process context windows of up to 500,000 tokens.

Claude 4 introduces a new feature called Extended Thinking that allows the model to work through complex problems step-by-step before generating a response. In testing, this capability has proven especially valuable for scientific research, legal analysis, and software engineering tasks where accuracy is critical.

The model is available immediately through Anthropic's API and consumer products. Enterprise customers can deploy Claude 4 on private infrastructure through partnerships with Amazon Web Services and Google Cloud. Anthropic says the model was trained with an emphasis on safety and honesty, incorporating lessons learned from red-teaming exercises involving over 1,000 external researchers.