Tanstack Start has impressive support for server functions, perhaps better than we get with NextJS. Let's put them head to head!

Code: https://github.com/jherr/tanstack-sfs

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00:00 Introduction
00:29 What is Tanstack Start
01:38 Server Function Basics
04:29 How Server Functions Work
06:16 NextJS 15 Server Functions
09:08 NextJS’s POST Problem
11:25 RSC Server Functions
13:04 Streaming Server Functions

Jack Herrington

Tanstack Start, a new framework combining Tanstack Router and Vinci, offers robust server function support currently in Alpha. This post compares it with NextJS 15, highlighting differences in implementation, including caching and server functions. Unique features of Tanstack Start like returning streams from server functions and its integration with tools like OpenAI are discussed. NextJS 15 introduces use cache for caching server functions, emphasizing flexibility in defining and managing server functionality.

Tanstack Start vs NextJS - Server Functions Battle