Anthropic has introduced new AI models, Claude Sonnet 4 and Claude Opus 4, to compete with rivals like Google Gemini.Claude Opus 4 claims to be the 'world's best coding model', while Claude Sonnet 4 enhances its predecessor.Feedback suggests Claude 4 may have what it takes to regain popularity among developers.Claude Opus 4 excelled in coding benchmarks, achieving high scores on SWE-bench and Terminal-bench.Claude Sonnet 4 notably improved on its predecessor's coding capabilities, scoring well on the SWE-bench.Opus 4 can work continuously for extended periods, addressing a common limitation in AI models.Developers praise Claude Sonnet 4 for its codebase understanding and improvements in software engineering tasks.GitHub is using Claude Sonnet 4 as the base model for their coding agent in GitHub Copilot.Anthropic's Claude Code now offers new features like code execution tool, MCP connector, Files API, and prompt caching.Claude 4 models offer technical advancements beyond coding assistance, including memory capabilities and multitasking.