Alternatives to Weights & Biases

Silico is Goodfire's interpretability agent for understanding, debugging, and controlling the internals of your AI models

OpenCompass (司南) benchmarks LLMs, VLMs, and AI4S models against 100+ open evaluation datasets with published, dated leaderboards

Elastic's free developer hub: tutorials, notebooks, and sample apps for building AI search on Elasticsearch.

Automated deep learning model optimization for NVIDIA GPUs.

Fiddler AI is an enterprise AI control plane for agent observability, guardrails, and governance across the agentic lifecycle.

Lance is an open lakehouse format for multimodal AI, pairing a file format, table format, and catalog spec with hybrid vector and full-text search on object

Free, open-source visualizer for neural network and machine learning model files.

Free benchmark leaderboard that scores LLMs on elite competition math from AIME and IMO to Lean proof datasets

Free open-source CLI that benchmarks local LLM throughput through Ollama and publishes results to a community database.

Open-source Python framework for evaluating and monitoring LLMs, RAG apps, AI agents, and predictive ML models.

Helicone is an AI gateway and LLM observability platform that routes, logs, and cost-tracks AI app traffic across 100+ models.

Open-source LLM observability, prompt management, and evaluation for teams running AI agents in production.

Arena AI is a free, community-voted LLM leaderboard ranking chat models, agents, and fullstack code on live head-to-head battles.

Opik, Comet's open-source LLM observability and eval platform, turns agent traces into root-cause groupings and git-committed code fixes

Open-source OpenTelemetry tracing, versioning, and sessions for Python LLM apps—bring your own backend.

Eval, tracing, red teaming, and governance for teams that need AI quality standardized across products.

ToolSpend tracks and forecasts AI API spend across OpenAI, Google AI, Azure, Bedrock, Anthropic, and Replicate in one dashboard.

Census: embedded customer data connectivity and reverse ETL for product teams

PostHog is an all-in-one product platform: analytics, session replay, error tracking, feature flags, experiments, surveys, and a managed data warehouse with a

Simulation-first evaluation and training infrastructure for AI agents, built on Digital World Models.

Paste one prompt, see how 40+ AI models answer it, then pick the one that's best, fastest, or cheapest.

Pre-trained finance AI models and API infrastructure for banks, insurers, and lenders, moving into agentic workflow orchestration.

Developer observability platform that traces, replays, and debugs AI agent runs across OpenAI, CrewAI, Autogen and 400+ LLMs

Agent observability that traces every AI run, scores quality with evals, and surfaces production patterns you didn't know to look for.

Independent AI leaderboard scoring 400+ models from every major lab on one composite number that blends benchmark results with live API speed and pricing.

AppWorld is a simulated-world benchmark for evaluating AI coding agents across 9 apps and 457 APIs.

Open-source ML orchestration plus a durable agent runtime that replays real production sessions before a change ships.

Free daily LLM speed benchmarks — compare time-to-first-token and tokens-per-second across models and regions.

Replay your live LLM traffic on candidate models to see exactly what behaviour changes before you switch.

Open-source toolkit for benchmarking vision-language models across 80+ multimodal tasks, with rankings published on the Open VLM Leaderboard.