About this directory

This is a personal, non-commercial directory of AI services. It records what each service is for, who it fits, its published pricing model, and where the official source is. It is updated by hand, not by scraping vendor marketing pages.

What this directory is

• A factual index of 40 real AI services in eight categories.
• A pointer system: every pricing claim links to the provider's official pricing page, and every service links to its official documentation.
• A fit guide: each service page states who it is for and who it is not for, based on documented capabilities and pricing structure.
• Updated on 2026-10-25.

What it is not

• Not a ranking. There are no scores, star ratings, or “best of” claims.
• Not a source of user counts, funding figures, revenue, or market share. Those figures are omitted rather than estimated.
• Not an affiliate site. There are no affiliate links, referral codes, or paid placements.
• Not legal, financial, or procurement advice. Verify pricing and contract terms with the provider.

How entries are written

Each entry starts from the provider's official product page and documentation. Pricing statements use one of three labels: free tier, subscription, or usage-based. A number is included only when the provider publishes it on an official page. Regional prices, promotional first-month prices, and third-party estimates are not copied as if they were list prices.

When a provider does not publish a price, the entry says so. For example, JetBrains Air is described as credit-based with bring-your-own-key options because a single public list price is not published on its product page.

Limitations

• AI pricing changes frequently. The linked official page is always more current than this summary.
• Prices vary by country, currency, tax treatment, annual versus monthly billing, and app-store purchase channel.
• Plan names and included limits change. A renamed plan can make an older comparison misleading.
• The directory covers five services per category, not every service on the market.

Corrections

Send corrections to superapp.devin@gmail.com with the page URL, the claim, and a link to the official source. Corrections that cite a primary source are applied first.

Curated by Hengfa Huang · X / Twitter · Last updated 2026-10-25.

About FAQ

Can I reuse information from this directory?

The directory summarizes public facts and links to primary sources. Reuse the links and verify the facts at the provider's official pages, which are the authoritative versions.

How do I report an error?

Email superapp.devin@gmail.com with the page URL, the claim, and a link to the official source that shows the correct information.