I made free versions of GPTs
Hi guys, For my startup at www.mithrin.ai which is about create AI Chatbot Agents for websites, I wanted to create some free tools to attract traffic to the site and decided to create specialized chatbots powered by LLMs, similar to OpenAI's Custom GPTs. I realized that by using gpt-4o-mini, I could create quite powerful alternatives to GPTs that are free to the public for a very small cost (given how cheap the model api cost is). I've employed some throttling to prevent abuse and to avoid being charged too much. Then I integrated this with my main service and allowed users to use the…
I made free versions of GPTs launched on October 4, 2024 with 6 votes, #1,611 of 5,185 launches that month and more than 50% of that year's launches. The site was not reachable when checked in September 2026.
What it does
In the maker’s words, at launch
Hi guys, For my startup at www.mithrin.ai which is about create AI Chatbot Agents for websites, I wanted to create some free tools to attract traffic to the site and decided to create specialized chatbots powered by LLMs, similar to OpenAI's Custom GPTs. I realized that by using gpt-4o-mini, I could create quite…
Does a similar job
all alternatives →
GPT‑5.4 mini and nanoMar 2026 · openai.com · ▲267Fast and efficient models optimized for coding and subagents

- CECustomizable, embeddable Chat GPT based on your own documents2023 · libraria.dev · ▲271
Hi Hacker News! My name is Bea, I built a site called Libraria that uses GPT to do a few things 1. Let you spin up multiple assistants based on your own documents. You can make it public, private, or protected. It has its own subdomain and landing page. 2. Respond in full markdown always, so it can output images, links, code, and more 3. Let you upload articles on the fly within the Chat, so you can ask it questions 4. Make it embeddable in your site with one line of code 5. Let you update it for fun / with your branding 5. Enable syncing for any URLs you let us scrape, so that you can…


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