ChatGPT Pro ($100/month) vs Claude Max 5x ($100/month) which is better for coding + technical work?

A user is seeking advice on whether to subscribe to ChatGPT Pro ($100/month) or Claude Max 5x ($100/month) for coding and technical work. Their work involves IoT, AI, automation, networking, APIs, systems integration, and coding, with heavy AI use for Python development, Git repos, debugging, CLI agentic coding, and technical research. They want to know which AI handles large repos better, requires less oversight for long tasks, excels in debugging and reasoning, and offers better practical usage limits.

This query directly compares the practical, day-to-day utility of ChatGPT Pro and Claude Max 5x for a specific user's diverse technical workflow, unlike general benchmarks.