Tesslate leaves the index: the vendor has pivoted to a different category

What we found

Tesslate held rank 33 of 38 in the index as it stood before this cycle, with a composite of 59.33, in the full-stack app builder segment. Ahead of publishing this cycle's figures we re-checked its entry point and found the product we measured is no longer there.

Fetched on 22 August 2026, tesslate.com now presents OpenSail, described on its own homepage as a business operations platform: workflow automation, team operations and reporting tooling aimed at running a company, not generating one. There is no mention of an app builder, no prompt to specification workflow and no reference to Tesslate by that name anywhere on the current site. This is a pivot, not a rebrand of the same product: the thing at that domain today answers a different question than the one our specification measures.

The price we published, "Free tier for small projects. Paid plans from EUR 16 per month," cannot be sourced from the vendor's current site either. OpenSail's pricing page describes its own operations tooling plans, not an app generation product, so there is no current page that supports the EUR 16 figure we had on file.

Why removal rather than a note

We do not keep a row for a product that no longer exists at its own domain, with a price we can no longer source, sitting in a comparison against builders you can still sign up for and buy today. There is nothing to correct here: the measurement was of a real product at a point in time, and that product has since moved into a different category entirely. Holding the row with a caveat would still rank OpenSail's business operations platform against app builders, which answers nobody's question correctly.

We are removing Tesslate the way we remove any product from this index: by setting its published flag to false, not by deleting its history. Its 45 recorded run executions and its published reader scores stay in the database exactly as measured. They are simply no longer surfaced on any public page, leaderboard, export or feed. If you need the archived figures for a research purpose, write to the lab address on the contact page.

What moves as a result

This cycle also splits the single merged roster into two separate boards, full-stack app builders and coding agents, because the two classes were never comparable on one index. Tesslate's removal lands in the same cycle as that split. After both changes, the published roster stands at 37 products: 20 full-stack app builders and 17 coding agents. The published run count for that cohort is 1,665 recorded prompt executions, 37 products times 45 runs each. Where a sentence on this site is explicitly about every execution ever recorded, including Tesslate's, it still says 1,710; every other count on the site now reflects the 37 published products.

Tesslate's builder page and its reviews page both redirect here permanently rather than serving a bare not found. Its row is gone from the full-stack app builders leaderboard, the matrix, the JSON and CSV data exports, llms.txt, llms-full.txt and the sitemap. Nothing about any other product's score, rank or ordering changes because of this removal.