What's in the chart:
- Which Claude model and which ChatGPT setting sit on each of the four rungs, and the jobs each rung is sized for
- What each plan actually gets you in both apps, free and paid
- What the top rung costs next to the bottom one, by list price
- How both lineups got here, so a model name you see in the wild makes sense
Sources are listed on the chart: mostly Anthropic's and OpenAI's own pages, read October 7, 2026.