Comparisons
No other library does what Hopfield does (inferring static LLM TypeScript types from Zod schemas), but there are some similarities with other libraries. This page compares Hopfield to other libraries.
Comparisons strive to be as accurate and as unbiased as possible. If you use any of these libraries and feel the information could be improved, feel free to suggest changes.
Langchain.js
Langchain.js is a framework for developing applications powered by language models with Javascript. Developers usually use Langchain to develop apps which connect to internal tools (like internal knowledge bases, LLM demos, and generally in trusted environments).
Hopfield is a TypeScript library that provides a subset of Langchain's features, prioritizing inferring static types from LLM input, alongside runtime response validation and static typing.
Below is a comparison of the library features:
| Langchain.js | Hopfield | |
|---|---|---|
| Prompt Templates | Opaque | Use string template types for type inference |
| Type Generation | Loose types with some Typescript helpers | Static types with Zod validation |
| Function Calling | Starter templates, with some Zod validation | Validation-driven, composable functions |
| Connectors/Tools | Many, with various integrations | Only a select few, with examples (actively being developed) |
| Dependencies | Many, with non-optional peer dependencies | Few, with strict bundle splitting to avoid unnecessary peer dependencies |