Alternatives to LLMTornado

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

Open-source TypeScript toolkit for building AI apps with 100+ models, streaming, and agent support

Open-source Python library for guaranteed valid structured outputs from LLMs

An open-source Python library for steering LLMs with native control flow, regex, and CFG constraints.

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

Unified API gateway for GPT, Claude, Gemini — one key, every modality.

Free multimodal AI API gateway for text, image, video, and audio generation with OpenAI-compatible endpoints

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

Self-improving inference API that routes every call to the best model and retrains itself from your traffic.

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

An AI router that sends every prompt to the best model, learning your preferences

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

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

Ruby gem for streaming open source LLMs via Ollama locally

Predibase by Rubrik: Fine-tune and serve open-source LLMs on managed infrastructure.

Build type-safe LLM agents in Rust with one unified provider API.

Open-source streaming-first toolkit that turns AI agent output into interactive UI, not JSON.

Fast, streaming LLM applications in Rust

Run local LLMs in your browser with zero infrastructure cost.

Open-source Java library for building LLM-powered apps with a unified API

React frontend stack for building agentic user experiences with generative UI

An open-source Python framework that turns ordinary functions into AI-powered tools via simple decorators.

Build LLM apps with decorators, observability, and full control.

Secure high-speed enterprise inference API for coding agents, zero data retention.

Open-source desktop client unifying 300+ AI models in one interface

A type-safe programming language for building AI agents with compile-time guarantees on structured outputs.

Pydantic AI: Python SDK for typed, production-grade AI agents with every model a string swap away.

One API for 500+ discounted AI models with pay-as-you-go credits

Open-source LLM that turns natural language into API calls for tool-using agents

AI-native cloud for developers: 200+ models, serverless GPUs, and agent sandbox under one API.