Alternatives to Embedbase

Open-source JavaScript library that runs small LLMs like Llama 3.2 1B Instruct inside the browser via WebAssembly and WebGPU.

AnyAPI A/B tests your GPT-3 prompts and ships the winning variant as a live REST API endpoint.

Guidance is an open-source Python library for constrained LLM generation with regex, context-free grammars, and inline control flow.

Elasticsearch Labs: free tutorials, notebooks, and reference apps for AI search, vector search, and RAG on Elasticsearch.

Go SDK for AI apps: one type-safe API for text generation, streaming, tools and MCP across 25+ LLM providers.

Visual agentic AI flow builder with a managed edge runtime, vector store, and GraphQL API for shipping AI agents without running

Outlines enforces structured LLM output during decoding, so JSON, regex, and grammar-constrained generations come back valid on the first

Open-source Java library that tokenizes text with OpenAI's BPE encodings so you can count, encode and decode locally

A browser canvas where you assemble the context an AI writes from, instead of retyping a prompt box.

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

Predibase: managed fine-tuning and multi-LoRA serving for open-source LLMs, now inside Rubrik.

Open-source TypeScript AI SDK for streaming AI apps and agents across 100+ models with built-in fallbacks

OpenAI Cookbook delivers free, MIT-licensed Python notebooks and guides for building with the OpenAI API.

OpenUI turns AI agent responses into streaming, interactive UI built from your own component library.

PrivateGPT is the open-source on-premise RAG framework for local document Q&A — 57k GitHub stars, zero cloud calls.

Open-source Python package for building conversational AI apps with a production-ready chat UI, auth, and persistence.

Mellea turns type-annotated Python functions into validated, testable LLM calls with token-level constrained decoding.

Run LLM inference, embeddings, and ML training directly inside PostgreSQL using SQL functions, or use the Korvus SDK for RAG pipelines.

Open-source (MIT) MCP testing and full-stack MCP App framework for building ChatGPT Apps and Claude Connectors from one React codebase.

A headless React hooks library that runs Vicuna-13B chat entirely in your browser via WebGPU, with no prompt or completion leaving the client.

RubyLLM is the Ruby-native AI framework: 19 providers, one API for chat, agents, tools, and RAG.

xsAI is an extra-small, OpenAI-compatible AI SDK for JavaScript and TypeScript — 13 KB gzipped with every package included.

Open-source Ruby gem giving one unified API across Anthropic, DeepSeek, Google, Mistral, Llama, and OpenAI

MIT-licensed Swift package for calling the OpenAI API with native async/await and Combine on Apple platforms.

Open-source Ruby gem that calls 11 LLM providers through one consistent interface for embeddings, completions, and chat.

Ruby gem for running open source LLMs locally through Ollama's API, with streaming, embeddings, and token tracking built in.

Open-source Python RAG framework that turns your PDFs, Notion pages, and websites into a queryable AI app in a few lines of code.

A Seoul studio that builds you a free working app prototype in about 10 minutes, then quotes the build.

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

RAG-as-a-service API that turns your documents into a cited AI assistant