Tools for using AI models

Team of 2 to 10 · 16 months after launch, revenue growing

Every team that builds with AI models ends up with several provider accounts, keys, invoices and SDKs. One gateway with open code replaces them, and a developer can read the code before sending traffic through the hosted version. In 2026 the founders added DevPass, a flat monthly price for coding agents with an allowance of up to three times the price in model usage. The verified monthly receipts grew from US$57,994 in January 2026 to US$249,922 in August 2026; TrustMRR does not split them by product.

Solo founder · 11 months after launch, revenue flat

The founder had written a marketing blog for ten years, so his own readers bought on the first day. He built the first version in 8 weeks with the no-code tool Bubble, because he had no money for developers. He sold one thing that the model makers do not sell: all of their models in one subscription.

Team of 2 to 10 · sold 14 months after launch

Gemini Notebook had more than 30 million users and no folders, no export and no public API for personal accounts. Kortex sold the missing half for a few dollars a month, found its users in the Chrome Web Store, where Google marked it Featured, and in two lifetime-deal launches. The founder wrote that more than 100,000 users came 'without a single ad'. Most of the verified revenue arrived in February and March 2026, when a US$49 lifetime licence was on sale.

Team of 2 to 10 · 42 months after launch, revenue falling

The plugin lives inside Obsidian's community plugin store, which the founder says gave it organic growth with no ads or paid creators: 300,000 downloads by the end of 2024, 1 million by February 2026 and 2 million by October 2026. The code is free, so there was nothing to sell until the company added a managed layer on top: hosted models, web search and tools that work without any setup. One-time lifetime plans, first Believer and then Supporter, brought large payments in single months. TrustMRR, reading the company's Stripe account, shows US$913,644 of revenue in total and US$17,899 of monthly recurring revenue from 1,356 subscriptions on 27 October 2026, after a fall of about 51% from the best month, February 2026.

Solo founder · 6 months after launch, revenue falling

People already pay for an assistant and already ask it for pictures and video. CreativeClaw sells inside that conversation, so it needs no interface of its own, no sales calls and no provider accounts on the customer's side. Revenue stayed under US$5,300 a month for five months, then rose about 18 times in September 2026, after the founder had packaged the server for ChatGPT and prepared its entry in the plugin directories. He has not published the cause of the rise.

Solo founder · 25 months after launch, revenue falling

A normal chat window is one long thread, and a side question either breaks that thread or is never asked. The founder sold a fix for that one problem to heavy AI users. The subscription version earned little; the one-time licence that followed sold to many buyers, and Stripe data on TrustMRR shows US$131,070 in total. Sales then fell, because each one-time buyer pays only once.

Team of 2 to 10 · 25 months after launch, revenue growing

Heavy users of AI chat apps lose old answers, because the apps had no folders, no filtered search and no bulk export. AI Toolbox adds these inside the apps, for four apps at once, sells them mostly as one-time licenses, and, by the seller's account, finds its buyers through search pages instead of ads.

Solo founder · 2 months after launch, revenue flat

AI coding agents can build a working page or deck, but in the founder's words their visual output often looks generic. Skillry sells finished visual styles, one task per Skill, shows real output before the sale, and adds new Skills almost every day under one subscription. When sales began on 28 September 2026, they held at about US$430 a day for 17 days.

Solo founder · 16 months after launch, revenue falling

It needs no connection to any chat app: a screenshot works for all of them, and a model that reads images does the rest. The seller says that most users are in Latin America, and the App Store ratings come mainly from Spain and Mexico, a Spanish-speaking market with fewer rival apps. The seller lists influencers as the marketing channel, and the web app has a creator programme with referral codes.

Solo founder · 12 months after launch, revenue falling

It launched in October 2025, when Anthropic's Claude Code had made skills, slash commands and subagents a normal way to steer a coding agent, and when most developers were still writing their own. A founder who presents themself as a CTO with 18 years of experience sold a tested set as a one-time purchase with a money-back promise. Verified revenue reached US$16,040 in March 2026 and US$82,195 in total, but it fell to under US$2,000 a month by September 2026.

Team of 2 to 10 · 2 months after launch, revenue growing

xAI released Grok Bot, a messaging app of AI agents, in beta on 11 August 2026. The two founders published their own open version about two hours later, under the name OpenGrokBot, and pitched it to people who wanted the same idea on Claude or Codex instead of Grok. Payment records show the first payment on 27 September 2026 and US$5,503 in the 30 days to 25 October 2026.

Solo founder · 33 months after launch, revenue falling

The app costs almost nothing to run: the owner reports a profit margin of 99%, and the App Store page shows no new version since July 2025. A small, steady flow of downloads, about 2,500 in 28 days in October 2026, keeps about 150 paid subscriptions alive. The owner is an experienced app marketer who already sells more than a dozen other apps from the same developer account.

Solo founder · 6 months after launch, revenue growing

The compression engine already existed as a free, open-source Python tool, but it was hard to install. Garm Lucassen packaged it into a desktop app that installs with a double click, connects the coding agents by itself and removes its changes when it quits. The engine's creator suggested that he build it and keep the Headroom name. Developers who hit the usage limits of their AI plans pay a small monthly price to make those limits last longer.

Solo founder · 31 months after launch, revenue growing

It shipped five days after the ChatGPT API appeared, when the official interface logged people out, typed slowly and had no search. It charged from the first day and raised the price with every update. Then a Team version for companies turned one-time sales into subscriptions.

Solo founder · 32 months after launch

It appeared in spring 2023, when people used ChatGPT in a browser tab and Mac users had to copy text between the browser and their other apps. The founder showed every step on X, one well-known founder reposted it, and AI directories and the Setapp app subscription brought buyers after that. He raised the price from US$19 to US$79 and kept the app running alone.

Solo founder · 20 months after launch

It shipped within a week of ChatGPT's release, when ChatGPT had no folders and weak search, and it was free, so it spread through the Chrome Web Store. A daily AI newsletter shown inside the extension turned the users into an audience that sponsors paid to reach, and a Pro plan added subscriptions ten months after launch.

Solo founder · 23 months after launch

It appeared in December 2022 as a free Chrome extension that put ChatGPT inside the Gmail reply box, and the company says it was the first to do so. The founder says they shared it on Reddit and it grew from there. A free version that used the visitor's own ChatGPT account built a large base of installs, and a paid version on the company's own servers followed in 2023.

Team of 2 to 10 · 16 months after launch

It shipped a working summarizer two months after ChatGPT appeared, launched on Product Hunt and Hacker News in the same month, and then turned every summary into a public web page that ranks in Google. Starter Story, which estimates revenue from public data, put it at about US$45,000 a month in May 2024 with three people.

Team of 2 to 10 · 23 months after launch, revenue growing

The first version was an AI copilot for DevOps engineers, who could build their own agents. The founders moved the product to non-technical teams that answer the same questions all day, started every customer with one small use (repeated questions in Slack), and added a higher-priced plan when power users asked for more agents. The founder said in an interview of 17 October 2025, as quoted by SoFarBot, that this took the company from US$100,000 to US$400,000 in annual recurring revenue.