Credit: Calvin Wankhede / Android AuthorityTL;DROpenAI has introduced a $100/month ChatGPT Pro plan in the US.The new tier offers 5x higher coding limits than the $20 Plus plan and is targeted at heavy users.OpenAI is now directly competing with Anthropic, which also offers a $100 Claude plan.OpenAI has introduced a new $100-per-month ChatGPT plan, driven by the growing popularity of its coding tool, Codex.