ChatGPT plugins for AI & ML
178 plugins, apps and MCP servers in AI & ML, ranked by official status, traction and completeness. Page 1 of 3.
The AI & ML category is mostly for people building with models rather than chatting with them. Typical jobs: getting current answers about the OpenAI API and Agents SDK, finding a model or dataset on Hugging Face, running a third-party image or video model, giving an agent long-term memory, and adding web search or a browser to an agent. A smaller group of apps lets anyone generate media with other models, such as Runway and Higgsfield.
The listing type matters more here than in most categories. Many of the top entries are MCP servers meant for Codex, the OpenAI API or other agents. Hosted servers connect by URL; local ones, such as the reference Memory server, run on your machine through npx. To add a remote MCP server to ChatGPT itself, you turn on developer mode, which is available on Plus, Pro, Business, Enterprise and Education accounts on the web. Plugins such as OpenAI Developers bundle skills for Codex, and apps like Hugging Face work in any chat once installed.
Before you connect:
- Runs use your own keys. Replicate runs predictions with your Replicate API token, and the local Browser Use agent needs an OpenAI or Anthropic API key.
- Some tools delete data. Mem0 includes
delete_memoryanddelete_all_memories. In developer mode, any tool without a read-only hint is treated as a write and asks for confirmation by default. - Know where memories live. Mem0 stores them in your Mem0 account; the reference Memory server keeps them in a local JSONL file.
Top picks for AI & ML
OpenAI's plugin for building on its platform: skills for the Agents SDK and Agents API, building and submitting ChatGPT apps, troubleshooting API errors, and creating API keys from Codex. Install it in Codex if you build with OpenAI, and treat any key it creates like a password.
A public, read-only MCP server that searches OpenAI's developer docs and returns full pages, with no sign-in. OpenAI suggests adding it to Codex and pointing to it from AGENTS.md so answers about the API, SDKs and Codex come from current documentation.
Inspects models, datasets, Spaces and papers on the Hugging Face Hub and runs Spaces, such as image generators, from ChatGPT. Good for keeping up with trending models; developers can use the Hugging Face MCP server in Codex instead.
Searches Replicate's model catalog, compares models and hardware options, and runs predictions through Replicate's API. Useful for trying image and video models from an agent; runs go through your Replicate account, so check a model's pricing first.
A hosted memory layer with tools to add, search, update and delete memories stored in your Mem0 account, signed in with OAuth or an API key. It gives Codex or your own agents memory that carries across sessions; because it includes a delete-all tool, keep write approvals on.
All 178 in AI & ML
SerenaSemantic code retrieval and editing toolkit for coding agentsMCP server · by Oraios AI · 30k stars
PAL MCP (formerly Zen MCP)Orchestrate multiple AI models from Claude Code, Gemini CLI or CodexMCP server · by Beehive Innovations · 12k starsAI & ML plugins: common questions
- How do I use an MCP server with ChatGPT?
For a server that isn't in the Plugin Directory, turn on developer mode under Settings, Security and login, then add the server's URL from the Plugins page. Developer mode is available on Plus, Pro, Business, Enterprise and Education accounts on the web, and OpenAI labels it elevated risk. Local servers that start with
npxoruvxneed Codex or another local client instead. Full steps: Add an MCP server to ChatGPT.- Can ChatGPT run Hugging Face models?
The Hugging Face app can run Spaces, such as image generators, and look up models, datasets and papers on the Hub. The Hugging Face MCP server does the same for Codex and other MCP clients, lets you add MCP-compatible Gradio Spaces as extra tools, and can optionally enable Jobs and sandboxes. To run hosted models through an API instead, try Replicate or fal.
- How can I give Codex or an AI agent long-term memory?
Add a memory MCP server. Mem0 is hosted and stores memories in your Mem0 account. The reference Memory server from the Model Context Protocol project keeps a knowledge graph in a local JSONL file. Graphiti, by Zep, builds a knowledge graph that tracks how facts change over time, backed by Neo4j or FalkorDB, and needs an LLM API key. Each one keeps its data in a different place, so pick by where you want memories stored.
- Which plugin helps me build with the OpenAI API?
Install the OpenAI Developers plugin in Codex. Its skills cover the Agents SDK and Agents API, building and submitting ChatGPT apps, diagnosing API errors and creating API keys. Pair it with the OpenAI Docs MCP server so answers draw on current documentation. For walkthroughs, see Use MCP in the OpenAI API and Build your first ChatGPT app.
Guide updated Oct 24, 2026.