Alternatives to SpeziLLM

Vercel AI SDK is an open-source TypeScript toolkit for building AI apps with 100+ models, real-time streaming, fallbacks, and agents

Open-source Swift package wrapping the OpenAI API with async/await and Combine.

Guidance is an open-source Python library for constrained LLM generation with regex, CFG, and native control flow.

Open-source framework for building private, on-premise RAG applications with 100% local data control.

The open-source Python library for loading, fine-tuning, and running transformer models across text, vision, audio, and video.

Open-source Rust tokenization library for training BPE, WordPiece and Unigram vocabularies at production speed.

Clinical-grade healthcare AI APIs for medical transcription, coding, and agents

Python library for guaranteed valid structured outputs from LLMs using FSM constrained decoding

Free GitHub repo of OpenAI API code examples, guides, and Jupyter notebooks.

Run LLMs in-browser with WebGPU — headless React hooks, just useLLM().

Fast Java tokenizer library for OpenAI GPT models using BPE

Run local LLMs in your browser with zero infrastructure cost.

Extra-small OpenAI-compatible AI SDK for JS — 40x smaller installs.

Enterprise-managed LLM fine-tuning and serving platform by Rubrik

Chinese enterprise LLM family with a medical AI focus

GoAI SDK: one unified Go API across 25+ LLM providers with streaming, structured output, MCP support.

One Ruby framework for all major AI providers—chat, images, audio, and tools.

Unified LLM interface for building AI-powered Ruby applications.

LMQL is a programming language for LLM interaction with typed constraints, nested queries, and multi-backend portability.

A/B test GPT-3 prompts and deploy the winning variant as a live API endpoint.

Add AI autocomplete to any website in 2 minutes