MCP vs function calling vs ChatGPT plugins: what API teams actually need in 2026
This story is from 2026-10-03. It is preserved in the archive; the latest stories are on the live feed.
When teams start connecting APIs to AI agents, three terms arrive together and get used interchangeably: function calling, ChatGPT plugins, and the Model Context Protocol (MCP). They are different layers of the stack, and treating them as alternatives leads to architectures that do not survive cont…
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- 2026-10-03 20:00 · DEV Community — AI
MCP vs function calling vs ChatGPT plugins: what API teams actually need in 2026