Both meter, at very different prices. Copilot Pro at $10 is the efficient choice for in-editor assistance in the GitHub ecosystem. ChatGPT Pro at $200 is for people whose workflow centers on ChatGPT and Codex's cloud delegation. If the agent matters more than the editor, Pro; if the editor matters more than the agent, Copilot.
This comparison is maintained by Standard Compute — we sell a third thing entirely (unlimited tokens at a flat price, paced under sustained load, from $9/mo), so we have no horse in this particular race and keep both sides honest. If neither plan above fits because the meter itself is your problem: the full comparison including us →