Claude AI Revolution: An Up-to-Date 2025 Guide to Anthropic’s ChatGPT Rival
Anthropic released Claude 4 in May 2025 as Sonnet 4 and Opus 4, adding code execution, agentic tool use, and a 200K+ token context window. Amazon invested $4 billion, with AWS Bedrock and Google Cloud Vertex AI hosting Claude. Pricing for Claude Opus 4 starts at $75 per million output tokens. Claude supports multimodal input, is multilingual, and uses an internal AI Constitution to reduce unsafe outputs.