SemiAnalysis limit-tested every major plan tier and found that Claude plans offer about five times the API value of ChatGPT plans on mid-tier models, according to an October 6, 2026 update relayed via the explainx.ai blog's OpenAI usage roundup. The comparison is about what subscribers actually get per dollar of subscription, not marketing token claims.

For anyone running serious workloads through a subscription instead of the API, the gap is the practical thing to know before renewing. A ChatGPT Plus or Pro renewal versus a Claude plan is no longer a close call on mid-tier usage value, per the testing.

The numbers come from SemiAnalysis's testing as reported second-hand, so treat the 5x figure as their measurement rather than a vendor claim. It lines up with the broader shift: plan value is quietly becoming the comparison that matters as the labs meter more aggressively.