Best Free LLM AI tools

LLM Arena enables users to compare multiple large language models side-by-side, analyzing features like accuracy and capabilities. It supports up to 10 models, facilitating informed decision-making for researchers and developers in selecting the right LLM for their needs.

AnythingLLM is the local chatbot application, offering full control over data and documents. It integrates various LLM models like GPT-4, custom models, and open-source alternatives. With unlimited document support and desktop privacy, it provides tailored insights and flexibility for businesses.

Portkey is an LLMOps platform offering a unified API and model catalog with observability, guardrails, RBAC, audit logs, prompt management, caching, routing and PII redaction to simplify multi-model integration, governance, monitoring, and cost optimization.

H2O.ai delivers an end‑to‑end AI platform that automates feature engineering, model selection, and explainability through AutoML, offers no‑code LLM training, supports enterprise multi‑model orchestration, and includes MLOps and a feature store, all compliant with strict data security standards.

Secoda centralizes data cataloging, metadata management, and lineage tracking, offering AI‑driven search, query monitoring, and quality scoring. It provides role‑based access, CI/CD impact analysis, and real‑time observability dashboards to streamline workflows.

LangWatch enables real‑time testing of LLM agents, offering simulation, prompt management, audit trails, and batch testing across models. It integrates with OpenTelemetry, LangChain, LangGraph, and supports self‑hosted, cloud, and role‑based access.

HoneyHive delivers AI observability and evaluation for production agents, offering OpenTelemetry tracing across 100+ LLMs, live metrics on quality, safety, latency, cost, drift alerts, offline experimentation, expert annotation, CI/CD integration, and enterprise security.

Rival is an AI model comparison platform that allows users to analyze and compare various AI models based on performance metrics and capabilities, facilitating informed decisions for developers and businesses in selecting tailored AI solutions.

Agent Arena is an AI agent competition platform for developers and researchers hosting live head-to-head and time-limited campaigns where agents are submitted, tested and benchmarked with public leaderboards, integrated LLM/framework support, varied game formats and reproducible match logs.

Heretic is a toolkit for customizing, ablating, and evaluating dense and MoE/hybrid LLMs, offering built-in chat, a benchmark runner, multiple ablation and analysis methods, Hugging Face/GitHub integration, CLI/pip support, and reproducible workflows.

DeepSeek Free provides browser access to 671-billion‑parameter DeepSeek-R1/V3 models for conversational Q&A, code assistance, math solving, and document/image-aware NLP; supports direct use without login, workflow integration, customization, and encrypted data handling.

Otari is an open-source AI gateway and control plane that unifies access to 40+ LLM providers via a single endpoint, offering per-workspace routing, automatic failover, budget and token enforcement, centralized API key management, audit trails, and SDKs.

Puddl is an AI tool that provides insights and reduces costs for OpenAI users, offering a free sign-up option, detailed cost breakdowns, request token-level details, a sleek playground, Python library, and more.

LLM-answer-engine is an advanced answer engine leveraging Groq, Mixtral, Langchain.JS, Brave Search, Serper API, and OpenAI to provide sources, answers, images, videos, and follow-up questions efficiently. It offers an opensource Perplexity alternative.

EvalsOne is an evaluation platform for developers and researchers to assess LLM prompts, RAG, and agents using rule‑based or LLM‑based methods, human judgment, and customizable evaluators. It supports multiple APIs and integrates with major AI frameworks.

The text-generation-webui is a Gradio-based web UI for Large Language Models, supporting various backends and multiple interface modes. It allows quick model switching, extension integration, and dynamic LoRA loading for custom training.

exllama is a memory-efficient tool for executing Hugging Face transformers with the LLaMA models using quantized weights, enabling high-performance NLP tasks on modern GPUs while minimizing memory usage and supporting various hardware configurations.

Mistral.rs is an efficient, versatile tool for high-speed large language model (LLM) inference, offering multi-device support and extensive quantization options for seamless deployment on diverse hardware setups.

Tila is a multi-agent AI platform with a visual infinite canvas to connect LLMs and creative tools for multimodal workflow automation. Convert and generate text, images, audio, and video, automate sequences, integrate APIs, and build reusable templates.

LLMs Work visually explains LLM internals—pre-training, tokenization, transformer blocks, attention, inference, and RAG—plus dataset curation, training dynamics, and deployment considerations, with visualizations and live examples for debugging, evaluation, and model interpretation.

ODS is an on-premises AI server for PC, Mac, and Linux offering local LLM inference, model management, agents, chat/voice UI, RAG with local document search, image pipelines, integrations (Ollama, ComfyUI, n8n), and operational tooling for private deployments.

Llmboard is a centralized platform for discovering and comparing AI models across text, vision, audio, video, and embeddings using standardized benchmarks and leaderboards. It provides detailed performance, runtime, and reliability metrics with filtering tools to support side-by-side model evaluation.