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See also: ChatGPT Plugins, ChatGPT Plugin Categories and Artificial Intelligence
Artificial Intelligence ChatGPT Plugins were a meta category of third party tools inside ChatGPT that helped users find, build, prompt, or orchestrate other artificial intelligence products. Instead of connecting ChatGPT to a single domain such as travel or weather, these plugins pointed users at directories of AI tools, rewrote prompts before they reached large language models, or coordinated several models in sequence. The plugins beta operated from March 23, 2023 until April 9, 2024, when OpenAI wound it down in favor of Custom GPTs and the GPT Store.
Many plugins in this category came from independent developers rather than established brands, and several were among the first demonstrations that ChatGPT could be a launchpad for the wider AI ecosystem. The category is now of historical interest. None of the plugins discussed here are reachable through the original install path; equivalent functionality has migrated into Custom GPTs, standalone websites, and AI agent platforms.
OpenAI introduced the plugin framework on March 23, 2023, in a post titled "ChatGPT plugins." The launch slate included two first party tools (a web browser and a code interpreter) and twelve third party partners: Expedia, FiscalNote, Instacart, KAYAK, Klarna, Milo, OpenTable, Shopify, Slack, Speak, Wolfram, and Zapier. None of those twelve sat clearly inside the AI category. The plugins that defined that grouping arrived later, built by developers whose primary subject was AI itself.
| Date | Event |
|---|---|
| March 23, 2023 | OpenAI announces ChatGPT plugins with twelve partners and two first party tools |
| April 2023 | Plugin alpha expands beyond the waitlist; first AI focused plugins appear |
| May 12, 2023 | OpenAI states web browsing and plugins will be available to all Plus subscribers the following week |
| May 19, 2023 | Plugin store opens broadly to ChatGPT Plus |
| Mid 2023 | Catalog grows past several hundred entries; directories such as There's An AI For That and AI Tool Hunt are widely covered |
| Late 2023 | OpenAI cites more than one thousand plugins across more than sixty informal categories |
| November 6, 2023 | OpenAI DevDay introduces GPTs as a successor framework |
| January 10, 2024 | GPT Store opens, accelerating migration of plugin developers to the GPT format |
| March 19, 2024 | Plugin store closes to new installs and new conversations |
| April 9, 2024 | All remaining plugin conversations stop and the platform shuts down |
The AI category was always informal. OpenAI did not publish a fixed taxonomy, and plugins surfaced through curated lists, in store search, and editorial picks rather than a strict tag. Press coverage and third party catalogs treated AI as an umbrella that overlapped with productivity, search, and developer tooling. For a wider view of how the store was organized, see chatgpt plugin categories.
The plugin architecture was the same across every category. Each plugin was described by a manifest file and an OpenAPI specification. ChatGPT decided when to call a plugin's endpoints, what arguments to send, and how to merge the response into its reply. Up to three plugins could be active in a single conversation.
What made the AI category distinct was its subject matter. Plugins in this group fell into three loose patterns:
Prompt help plugins were the closest thing the store had to a public introduction to prompt engineering. A plugin that rewrote "tell me about dogs" into something more specific often made the difference between a generic answer and a useful one. Tool discovery plugins played a similar role for the broader AI market. By mid 2023 the number of public AI tools had grown to several thousand, and directories such as There's An AI For That and AI Tool Hunt became a common way for casual users to find tools they did not already know existed. Agent like plugins were an early hint of the AI agents wave that would dominate the rest of 2023 and most of 2024 once frameworks such as AutoGPT and BabyAGI captured the public imagination.
The table below lists plugins in the AI category that were widely covered in press, plugin catalog sites, and independent reviews during the plugin era. The category was crowded and informal, and many plugins were short lived. Plugins that could not be confirmed in at least two separate sources are omitted.
| Plugin | Function | Verified period |
|---|---|---|
| Prompt Perfect | Rewrites a user prompt when the message begins with the keyword "perfect"; built by Jina AI | 2023 to 2024 |
| There's An AI For That | Returns AI tools from theresanaiforthat.com matching a described use case | 2023 to 2024 |
| AI Tool Hunt | Suggests tools from a database of more than sixteen hundred AI products in over one hundred twenty categories | 2023 to 2024 |
| Gate2AI | Recommends AI tools for a given task from the Gate2AI catalog | 2023 to 2024 |
| OpenTools AI | Returns relevant AI tools from the OpenTools directory | 2023 to 2024 |
| Paxi AI | Helps users locate an AI tool that fits a described task | 2023 to 2024 |
| AIMaster | Generates a structured prompt from a short list of keywords | 2023 to 2024 |
| Promptest | Improves a prompt through /enhance and /feedback commands | 2023 to 2024 |
| MixerBox Prompt Pro | Rewrites a question into a more specific prompt; by MixerBox | 2023 to 2024 |
| AI Agents | Coordinates several AI calls toward a single user goal | 2023 to 2024 |
| AI Chatbot Builder | Builds a custom chatbot from business content provided by the user | 2023 to 2024 |
Prompt Perfect was developed by Jina AI and was one of the most heavily covered AI plugins during the beta. The user typed the keyword "perfect" at the start of a message, and the plugin rewrote the message into a longer, more specific prompt before ChatGPT answered. Jina AI also published PromptPerfect as a standalone web product that outlived the plugin store.
MixerBox Prompt Pro played the same role from a different developer, integrated with the rest of the MixerBox plugin family. Promptest exposed the rewrite step through slash commands such as /enhance and /feedback, and AIMaster let a user supply only keywords and have the plugin assemble the prompt.
For users learning prompt engineering, these plugins were a low cost way to see what a more structured input could do. The models behind them, mainly GPT-4 and GPT-3.5, produced visibly better answers when fed a richer prompt.
The second group was a set of directories. There's An AI For That, AI Tool Hunt, Gate2AI, OpenTools AI, and Paxi AI all wrapped a public catalog of AI products and let ChatGPT query the catalog through natural language. A user could ask "I need to write a cover letter" or "I want to remove the background from a photo" and receive a ranked list of tools, with links and short descriptions.
There's An AI For That, often shortened to TAAFT, was the most visible of these directories. The site billed itself as the largest public catalog of AI tools, and the plugin shipped its search results into ChatGPT. AI Tool Hunt described its catalog as more than sixteen hundred AI products in more than one hundred twenty categories. Gate2AI and OpenTools AI worked from smaller but overlapping databases. Paxi AI focused on connecting tools into longer pipelines.
The AI tool market in 2023 was growing too quickly for any one user to follow, and search engines indexed AI products inconsistently. A plugin that returned a curated list sorted by relevance was often more useful than a Google search. After the shutdown, the underlying directories continued to operate as websites and as Custom GPTs.
The AI Agents plugin and AI Chatbot Builder were the most explicitly agent flavored entries. AI Agents was marketed with the line "Unleashing the power of multiple AIs: One goal, limitless productivity," and it ran a short loop of model calls aimed at a single objective stated by the user. AI Chatbot Builder helped a user assemble a chatbot from documents and web content they supplied, an early version of the retrieval pattern that would become a default feature of the GPT Store.
Both plugins were limited by the protocol. The plugin runtime had no persistent memory between conversations, no long running background tasks, and a cap of three installed plugins per chat. The agent loops they could run were shallow compared with dedicated frameworks such as AutoGPT and BabyAGI. Even so, AI Agents was widely covered as one of the first user facing previews of agent style behavior inside a mainstream chatbot.
A chat session that used AI category plugins often followed one of three patterns. The first was prompt rewriting: a user installed Prompt Perfect or MixerBox Prompt Pro, typed a vague request, and let the plugin produce a structured prompt that ChatGPT then answered. The second was tool search followed by a handoff: a user installed There's An AI For That or AI Tool Hunt, asked for tools relevant to a job, and used the returned links to leave ChatGPT for a different product. The third combined a prompt rewriter, a tool directory, and a workhorse plugin in the same chat, using the three plugin cap to refine the prompt, identify external tools, and then call the workhorse plugin for the answer.
The AI category overlapped heavily with the rise of the AI agents framing in 2023. AutoGPT was published on GitHub in March 2023, the same week as the plugin announcement, and BabyAGI followed in early April. Both projects ran their own loops of model calls outside ChatGPT. The AI Agents plugin and AI Chatbot Builder offered a tamer version of the same idea inside the chat window.
The plugin protocol limited how far this could go: stateless across conversations, no offline tasks, and tied to the request and response cycle of a chat. The autonomy that AutoGPT and BabyAGI showed required a longer loop than the plugin runtime allowed. Even so, the plugin store was the first place where most ChatGPT users encountered the idea of chaining several AI calls toward a stated goal.
OpenAI announced GPTs at its first DevDay on November 6, 2023, and said in the same window that the plugin beta would end. According to OpenAI help center materials and partner posts from Zapier, the GPT format collected the strongest patterns from the plugin era into a single artifact: a GPT could carry instructions, knowledge files, and Actions, and could be shared through a public store. Plugins lived only inside ChatGPT's plugin menu and had no formal distribution channel.
For the AI category, GPTs solved several practical problems. A prompt rewriter could ship as a GPT with built in instructions, so the user did not have to remember a trigger word such as "perfect." A tool directory could be a GPT with the catalog as knowledge plus an Action that hit the live database. Agent style behavior could be expressed as a GPT with a long system prompt and several Actions, more room than the three plugin cap allowed.
New installs and conversations stopped on March 19, 2024. Existing conversations stopped on April 9, 2024. By then the GPT Store had been open for roughly three months, and most plugins listed above had released a Custom GPT equivalent or kept a standalone web product running.
Three types of products absorbed the AI category after the plugin platform closed.
The first was Custom GPTs and the GPT Store. Most prompt rewriters, tool directories, and agent style helpers released GPT versions in late 2023 or early 2024. Jina AI continued to publish PromptPerfect, There's An AI For That added a Custom GPT, and MixerBox built a large catalog of GPTs that mirrored its plugin family.
The second was the wider AI agents market. AutoGPT and BabyAGI grew into more capable agent platforms during 2024 and 2025, and enterprise agent frameworks from established vendors followed. The patterns introduced by AI Agents and AI Chatbot Builder became standard features of these systems.
The third was a class of standalone prompt and tool directory websites. Sites such as theresanaiforthat.com and aitoolhunt.com kept growing through 2024 and 2025 as web destinations. PromptPerfect's web product served users who preferred to compose prompts outside ChatGPT.
The AI category of ChatGPT plugins was less a stable product line than a brief proving ground. It showed that prompt help, AI tool discovery, and basic agent coordination were features users wanted from a chat assistant, and after the plugins shut down those features migrated into the formats that have shaped the AI tooling market since.