| WebGPT | WebGPTGPT-3 answers questions by browsing the webAnnouncement |
| ChatGPT plugins | ChatGPT pluginsChatGPT uses third-party servicesAnnouncement |
| Function calling in the API | Function callingAPI models call developers' functionsAnnouncement |
| Tool use generally available | Claude tool useClaude calls external tools and APIsAnnouncement |
| Model Context Protocol (MCP) | MCPOpen standard for connecting tools and dataAnnouncement |
| Apps in ChatGPT and Apps SDK | Apps in ChatGPTThird-party apps inside ChatGPTAnnouncement |
| Advanced tool use | Advanced tool useClaude finds and runs tools on demandAnnouncement |
| MCP donated to Agentic AI Foundation | MCP to Linux FoundationA new foundation co-founded with OpenAIAnnouncement |
