Anthropic has revoked OpenAI's access to its Claude API after discovering that OpenAI engineers were using Claude's coding tools, known for their effectiveness in creating web apps and performing infrastructure-related tasks. With the launch of GPT-5 imminent, it's speculated that Claude Code may have been utilized to enhance GPT-5's coding capabilities.

The article delves into a comparative analysis of OpenAI's Codex and Anthropic's Claude Code, focusing on their capabilities in code generation and natural language understanding. It evaluates their performance through various coding tasks and highlights the strengths and weaknesses of each model.