AI Subscriptions Cost More Than the $20 Price Tag Suggests

Paying for both ChatGPT Plus and Claude Pro costs $40 a month at the listed prices. That is before higher tiers and extra usage fees, which can raise a bill further. A review of official pricing tables as of October 2026 shows the $20 sticker price is only the start for some users.

What changed

On September 29, OpenAI added a Pro 500 plan at $500 a month. Its Pro guidance now shows $100, $200 and $500 monthly plans side by side. Claude also lists a Max plan starting at $100 a month, separate from Pro. The $20 plans have not disappeared, and not everyone must pay $500.

The second bill

Claude has a feature called usage credits. If it is turned on for a paid plan, you can keep working after you hit your included limit and pay as you go. That charge is billed separately from the subscription. You can set a monthly spending cap and an auto-top-up. If you never turned the feature on, these charges do not happen automatically.

OpenAI also keeps ChatGPT Plus and API usage separate. The API is the tool developers use to connect programs to the AI. A Plus subscription does not cover API calls from software you build yourself.

Who it affects

A U.S. survey by Epoch AI with Ipsos ran from July 10 to 19, 2026. It looked at 469 workers who used AI for work in the prior week, out of 1,103 validated employed respondents. Among them, 12.7% mainly used a personal paid subscription for work. Another 8.3% used a mix of company-provided and personal paid subscriptions.

The article also says current data cannot show that average AI spending is rising for all South Korean office workers. A higher bill can come from a price increase or from moving to a bigger plan.

What to do

• List the base fee, any credit purchases and auto-top-up status for each account.
• Find out which features hit a limit and when the limit resets.
• Separate one-time rush work from repeat work before upgrading.
• Check whether a company-provided tool already covers what you pay for.