Open-source LLM development tools - AI tools

Axolotl AI is a free, open-source tool designed to make fine-tuning Large Language Models (LLMs) faster, more accessible, and scalable across various AI models and platforms.

• Free

Laminar is an open-source platform that enables developers to trace, evaluate, label, and analyze Large Language Model (LLM) applications with minimal code integration.

• Freemium
• From 25$

Hegel AI provides a developer platform for building, monitoring, and improving large language model (LLM) applications, featuring tools for experimentation, evaluation, and feedback integration.

• Contact for Pricing

Transformer Lab is an open-source platform enabling researchers, ML engineers, and developers to collaboratively build, train, evaluate, and deploy AI models with features like provenance, reproducibility, and transparency.

• Free

Flowise is an open-source low-code platform that enables developers to build customized LLM orchestration flows and AI agents through a drag-and-drop interface.

• Freemium
• From 35$

Langfuse provides an open-source platform for tracing, evaluating, and managing prompts to debug and improve LLM applications.

• Freemium
• From 59$

Gorilla is an open-source Large Language Model (LLM) developed by UC Berkeley, designed to interact with a wide range of services by invoking API calls.

• Free

Missing Studio is an open-source AI platform designed for developers to build and deploy generative AI applications. It offers tools for managing LLMs, optimizing performance, and ensuring reliability.

• Free

OpenTools provides a unified API enabling developers to connect Large Language Models (LLMs) with a diverse ecosystem of tools, simplifying integration and management.

• Usage Based

Literal AI streamlines the development of LLM applications, offering tools for evaluation, prompt management, logging, monitoring, and more to build production-grade AI products.

• Freemium

PromptsLabs is a community-driven platform providing copy-paste prompts to test the performance of new LLMs. Explore and contribute to a growing collection of prompts.

• Free

Phoenix accelerates AI development with powerful insights, allowing seamless evaluation, experimentation, and optimization of AI applications in real time.

• Freemium

BenchLLM is a tool for evaluating LLM-powered applications. It allows users to build test suites, generate quality reports, and choose between automated, interactive, or custom evaluation strategies.

• Other

Agenta is an LLM engineering platform offering tools for prompt engineering, versioning, evaluation, and observability in a single, collaborative environment.

• Freemium
• From 49$

EleutherAI is a research institute focused on advancing and democratizing open-source AI, particularly in language modeling, interpretability, and alignment. They train, release, and evaluate powerful open-source LLMs.

• Free

Superpipe is an open-source experimentation platform designed for building, evaluating, and optimizing Large Language Model (LLM) pipelines to improve accuracy and minimize costs. It allows deployment on user infrastructure for enhanced privacy and security.

• Free

LangChain is a comprehensive framework for developing and deploying applications powered by large language models (LLMs), enabling the creation of sophisticated AI agents, chatbots, and data analysis tools. It facilitates building context-aware and reasoning applications.

• Free

LM Studio is a desktop application that allows users to run Large Language Models (LLMs) locally and offline, supporting various architectures including Llama, Mistral, Phi, Gemma, DeepSeek, and Qwen 2.5.

• Free

LMQL is a programming language designed for large language models, offering robust and modular prompting with types, templates, and constraints.

• Free

LLM Explorer is a comprehensive platform for discovering, comparing, and accessing over 46,000 open-source Large Language Models (LLMs) and Small Language Models (SLMs).

• Free

LiteLLM provides a simplified and standardized way to interact with over 100 large language models (LLMs) using a consistent OpenAI-compatible input/output format.

• Free

Rig is a Rust-based framework for building modular and scalable LLM applications. It offers a unified LLM interface, Rust-powered performance, and advanced AI workflow abstractions.

• Free

LlamaEdge is a lightweight and fast local LLM runtime and API server, powered by Rust & WasmEdge, designed for creating cross-platform LLM agents and web services.

• Free

Petals enables users to run large language models like Llama 3.1 and Mixtral collaboratively, distributing the load across a network of consumer-grade GPUs.

• Free

Keywords AI is a comprehensive developer platform for LLM applications, offering monitoring, debugging, and deployment tools. It serves as a Datadog-like solution specifically designed for LLM applications.

• Freemium
• From 7$

LLMStack is an open-source development platform that enables users to build AI agents, workflows, and applications by integrating various model providers and custom data sources.

• Other

Lora provides an SDK for integrating a fine-tuned, mobile-optimized local Large Language Model (LLM) into applications with minimal setup, offering GPT-4o-mini level performance.

• Freemium

Aider is a command-line tool that enables pair programming with LLMs to edit code in your local git repository. It supports various LLMs and offers top-tier performance on software engineering benchmarks.

• Free

LlamaHub is a repository providing data loaders, agent tools, and LlamaPacks to quickly build and customize Retrieval-Augmented Generation (RAG) applications using frameworks like LlamaIndex and LangChain.

• Free

WebLLM enables running large language models (LLMs) directly within a web browser using WebGPU for hardware acceleration, reducing server costs and enhancing privacy.

• Free