660 tools
Free planAI models & APIs
Label Studio is HumanSignal’s open-source data labeling platform for multimodal datasets, LLM evals, RLHF, and agent traces. Enterprise hosting adds automation, SSO, and quality workflows through HumanSignal cloud plans.
No free planAI models & APIs
Label Your Data is a data annotation services and platform provider for computer vision, NLP, audio, 3D, and content moderation workloads. Teams can run managed labeling pilots or use the self-serve platform with flexible hourly, per-object, or project-based commercial models.
Free planAI models & APIs
LAION (Large-scale Artificial Intelligence Open Network) is a nonprofit research organization publishing open datasets, tools, and models for machine learning. It maintains releases such as LAION-400M, LAION-5B, LAION-Aesthetics, and large CLIP checkpoints for public research and education.
Free tier unknownAI models & APIs
Lambda Cloud rents NVIDIA GPU instances and clusters for AI training and inference, with self-serve Instances plus 1-Click Clusters and Superclusters on H100, H200, and B200 hardware. Pricing pages list hourly GPU rates for instances and multi-GPU production clusters.
No free planAI models & APIs
Lamb Labs is building MPUs (Model Processing Units) that hardcode entire models including weights into silicon to escape GPU memory-bandwidth limits, targeting very high tokens per second. The team ships Larry, a one-bit quantized Qwen variant, FPGA prototypes, and on-chip demos on the path to custom ASICs.
Free planCoding & development
Langfuse is an open-source LLM engineering platform for tracing, evaluating, and improving AI agents with collaborative debugging and metrics. Langfuse Cloud offers hosted Hobby, Core, and Pro tiers metered in observability units.
Free planCoding & development
LangSmith is an enterprise LLM observability, evaluation, and monitoring platform built by LangChain.
Free planAI models & APIs
LatamGPT is a Latin American initiative to build an open regional large language model and supporting ecosystem. The public site hosts Copuchat for experimental conversations, publishes resources and corpus access, and releases models for developers via GitHub and Hugging Face.
Free tier unknownAI models & APIs
Layerbrain is a research company building Computer World Models—frontier models that generate, perceive, and interact with working software from pixels. The public site focuses on that research mission rather than a commercial SaaS product.
No free planAI models & APIs
NativePort Leaderboards publishes ranked benchmark tables for web-access AI capabilities NativePort measures. Each row shows composite scores, quality metrics, latency p50, track-specific cost figures, and run dates so teams can compare providers on reproducible tests.
Free planAI agents & automation
Letta is an AI research lab and product company building stateful agents whose memory and capabilities evolve over time, originating from MemGPT research. It ships Letta Agent software, a CLI, and cloud plans for individuals, teams, and API developers.
Free planAI models & APIs
LibreTranslate is a free and open-source machine translation API you can self-host or access through LibreTranslate’s managed cloud keys. The public site offers offline-capable downloads, documentation, and a hosted translation endpoint for teams that prefer not to run their own GPU stack.
Free tier unknownAI models & APIs
Lightning AI is the AI cloud from the PyTorch Lightning creators for building, training, and deploying models on large GPU fleets.
Free tier unknownAI models & APIs
Lilac turns GPU clusters into reliable AI factories for data centers and lessees. Its platform validates nodes before billing, monitors fleets around the clock, meters usage for invoicing, and gives operators a single record for SLAs, credits, and audits.
Free planVideo
Linum is a two-person research lab training generative video models from scratch. The site showcases text-to-video generations, publishes field notes on model training, and distributes Linum v2 model weights under Apache 2.0 for download.
Free planAI models & APIs
LiteLLM is an open-source AI gateway and LLM proxy that exposes 100+ providers through one OpenAI-compatible API. Teams can track and cap spend, route requests, enforce guardrails, and self-host the gateway, including air-gapped deployments.
Free planAI models & APIs
LiveBench is a contamination-aware LLM benchmark that releases fresh questions monthly with verifiable ground-truth answers. It spans 18 tasks across six categories and provides open-source tooling to generate answers, score models, and publish leaderboard results.
Free planAI models & APIs
Llama is Meta's open-model brand for developers. The llama.com address now redirects to Meta's AI developer site, which promotes the Muse model family and the self-serve Meta Model API.
Free planChatbots & assistants
LlamaChat is a free, open-source macOS app for chatting with local LLaMA, Alpaca, and GPT4All models on your Mac. It imports PyTorch or GGML checkpoints, runs fully offline, and requires users to supply their own model files under each model's license.
Free planAI models & APIs
Arena, formerly LMArena and Chatbot Arena, is a public platform where people compare AI models and vote on the better answer. Anonymous Battle Mode votes feed its leaderboards for text, code, image, video and search models. It began as a UC Berkeley research project.
AI models & APIs
LLM Cost Lab compares language-model API costs using workload estimates and model pricing records.
Free planAI models & APIs
LLMEval is a Fudan NLP Lab research series building comprehensive LLM evaluation frameworks across academic disciplines, medical AI, and large generative question sets. It publishes papers, leaderboards, and open-source datasets such as LLMEval-Logic with solver-verified answers.
No free planAI models & APIs
LLM Evaluation is a research hub documenting Microsoft Research–led work on benchmarking and evaluating large language models, including leaderboards, papers, and code for adversarial robustness, DyVal, and prompt-engineering benchmarks.
Free to startAI models & APIs
LLMKube is an open-source Kubernetes operator for self-hosted LLM inference across NVIDIA, Apple Silicon, and AMD hardware, supporting runtimes such as vLLM, llama.cpp, and mlx-server with CLI deployment, autoscaling, GPU sharding, and Grafana metrics.
Showing 384 of 660 tools
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