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AI infrastructure · Tool
Weights & Biases
ResearchedWeights & Biases is an AI developer platform by CoreWeave (NASDAQ: CRWV) for building AI agents, applications, and models. It offers experiment tracking, hyperparameter sweeps, serverless LLM fine-tuning and inference, and is trusted by 900,000 users and 1,000+ companies.
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In one minute
Start here for the decision-making essentials: what Weights & Biases does, who it is for, how it is accessed, and the first-party sources behind this profile.
Pricing4 options
Free plan costs $0/month for personal development of AI applications and models
Pro plan starts at $60/month, billed monthly, with a 30 day free trial
Support pricing details are not published
must contact the sales team
Platforms
Web
API accessNot public
FoundedNot disclosed by source
AvailabilityWeb / remote
LicenseProprietary
Best suited to
Source-backed fit AI developers building agents, applications, and models ML teams needing experiment tracking and visualization Enterprises seeking serverless LLM fine-tuning without GPU management Teams running hyperparameter optimization sweeps Organizations deploying cloud-hosted or privately-hosted AI platforms Support tiers are designed for enterprise customers who can select the…
Decision support
6 sourced answersCommon questions and adoption checks
Short answers to the questions buyers and builders commonly ask about Weights & Biases. Each answer cites the shared ledger below, where every source is listed once.
01What does Weights & Biases say it can do?
Track and visualize ML experiments · Hyperparameter optimization via Sweeps · Fine-tune LLMs without managing GPUs (Serverless RL/SFT) · Free plan includes AI application evaluations, AI application tracing, AI application scor
Experiments Track and visualize your experiments
02Who is Weights & Biases intended for?
Support tiers are designed for enterprise customers who can select the option that best fi · Trusted by 900,000 users and 1,000+ companies, from cutting-edge AI startups and research · Cutting-edge machine learning teams including OpenAI, NVIDIA, and Cohere · Tools are used by cutting-edge machine learning teams including OpenAI, NVIDIA, and Meta.
Enterprise customers can select the option that best fits their needs.
03What use cases does Weights & Biases describe?
Computer vision, contact centers, evaluations, fine-tuning LLMs, physical AI, RAG, trainin · Listed use cases include Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Ph · Computer vision, contact centers, evaluations, fine-tune LLMs, physical AI, RAG, train LLM · Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Physical AI, RAG, Train LLM
Computer vision Contact centers Evaluations Fine-tune LLMs Physical AI RAG Train LLMs Quant trading
04What pricing information is available for Weights & Biases?
Free plan costs $0/month for personal development of AI applications and models · Pro plan starts at $60/month, billed monthly, with a 30 day free trial · Support pricing details are not published; must contact the sales team
Free Designed for personal development of AI applications and models $0/mo GET STARTED
05What integrations does Weights & Biases document?
W&B Weave is available in the AWS Marketplace AI Agents and Tools Category
Weights & Biases Announces Availability of W&B Weave in the New AWS Marketplace AI Agents and Tools Category
Ledger citation[8] wandb.ai/site/press-releases
06How can Weights & Biases be deployed or accessed?
Offered as Cloud-hosted and Privately-hosted deployments
The best tools for AI developers Cloud-hosted Privately-hosted
Ledger citation[2] wandb.ai/site/pricing
Decision guide
AI infrastructureCapabilities and operating fit
This profile connects the jobs Weights & Biases is described as handling with its delivery model, access options and the subjects used to match it to related products in this directory.
Common use cases
- Computer vision
- Contact centers
- Evaluations
- Fine-tune LLMs
- Physical AI
- RAG (Retrieval Augmented Generation)
Topics mapped
Verified capabilities
- Track and visualize ML experiments
- Hyperparameter optimization via Sweeps
- Fine-tune LLMs without managing GPUs (Serverless RL/SFT)
- Free plan includes AI application evaluations, AI application tracing, AI application scor
- developer tools for machine learning
- Serverless RL to fine-tune LLMs without managing GPUs
- Serverless Inference for OpenAI OSS (GPT OSS 20B, GPT OSS 120B), Alibaba Qwen3 (235B A22B,
- Track and visualize ML experiments (Experiments), optimize hyperparameters (Sweeps), docum
Recorded integrations
Intended audiences
Support tiers are designed for enterprise customers who can select the option that best fiTrusted by 900,000 users and 1,000+ companies, from cutting-edge AI startups and research Cutting-edge machine learning teams including OpenAI, NVIDIA, and CohereTools are used by cutting-edge machine learning teams including OpenAI, NVIDIA, and Meta.
Access signals
- Pricing model
- Free plan costs $0/month for personal development of AI applications and models · Pro plan starts at $60/month, billed monthly, with a 30 day free trial · Support pricing details are not published; must contact the sales team
- API
- Not publicly listed
- Source links
- 17 recorded
Source-backed
Updated July 22, 2026Verified facts
Each fact points to a recorded source, making it easy to distinguish verified product information from claims that need checking.
Weights & Biases: The AI developer platform
AI developer platform to build AI agents, applications, and models · Track and visualize ML experiments · Hyperparameter optimization via Sweeps
AI developer platform to build AI agents, applications, and models
Track and visualize ML experiments
Hyperparameter optimization via Sweeps
Fine-tune LLMs without managing GPUs (Serverless RL/SFT)
Computer vision, contact centers, evaluations, fine-tuning LLMs, physical AI, RAG, training LLMs, quant trading
View 32 more verified facts
Serverless inference supports OpenAI GPT OSS 20B and GPT OSS 120B
Free plan costs $0/month for personal development of AI applications and models
Pro plan starts at $60/month, billed monthly, with a 30 day free trial
Offered as Cloud-hosted and Privately-hosted deployments
Free plan includes AI application evaluations, AI application tracing, AI application scorers, AI model experiment tracking, and AI assets registry & lineage tracking
Free plan is limited to Community Support
Listed use cases include Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Physical AI, RAG, Train LLMs, and Quant trading
developer tools for machine learning
Three tiers: Standard, Standard Plus, and Premium
Standard Plus adds onboarding, a dedicated success team, and Slack or MS Teams support
Premium includes all Standard Plus features plus enhanced collaboration (feature prioritization, roadmap sessions, early beta access), faster response times, and 24/7 coverage
Customer Support can be reached at [email protected] for help retrieving data
Support tiers are designed for enterprise customers who can select the option that best fits their needs
Support pricing details are not published; must contact the sales team
Robust security measures including authentication, encryption, and a bug bounty program
Preconfigured security features for authentication, authorization, encryption, and more
Customer support available at [email protected]
Serverless RL to fine-tune LLMs without managing GPUs
Serverless Inference for OpenAI OSS (GPT OSS 20B, GPT OSS 120B), Alibaba Qwen3 (235B A22B, 235B Thinking, Coder 480B), Meta Llama (Llama 4 Scout, Llama 3.3 70B, Llama 3.1 8B), MoonshotAI Kimi K2.5, Microsoft Phi 4 Mini 3.8B, DeepSeek (V3.1,
Computer vision, contact centers, evaluations, fine-tune LLMs, physical AI, RAG, train LLMs, and quant trading
Weights & Biases
developer tools for machine learning
Weights & Biases is by CoreWeave (NASDAQ: CRWV)
Livingston, N.J.
Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Physical AI, RAG, Train LLMs, Quant trading
W&B Weave is available in the AWS Marketplace AI Agents and Tools Category
ART is an open-source RL framework
Trusted by 900,000 users and 1,000+ companies, from cutting-edge AI startups and research institutions to major brands
Computer vision, contact centers, evaluations, fine-tune LLMs, physical AI, RAG, train LLMs, quant trading
Track and visualize ML experiments (Experiments), optimize hyperparameters (Sweeps), document AI insights (Reports)
Serverless RL to fine-tune LLMs without managing GPUs, plus Serverless SFT to teach LLMs new tasks
Serverless Inference offers models from OpenAI (GPT OSS 20B/120B), Alibaba (Qwen3 235B A22B, 235B Thinking, Coder 480B), Meta (Llama 4 Scout, Llama 3.3 70B, Llama 3.1 8B), MoonshotAI (Kimi K2.5), Microsoft (Phi 4 Mini 3.8B), Hangzhou DeepSe
Practical capabilities
8 documented areasWhat it helps with
A concise view of the jobs, capabilities and integrations described in the recorded product sources.
Computer vision
Contact centers
Evaluations
Fine-tune LLMs
Physical AI
RAG (Retrieval Augmented Generation)
Train LLMs
Quant trading
Availability
Source checkedWhere it runs and where to get it
Documented product formats, platforms and official distribution destinations. Availability can vary by region and plan.
Cost / license
Free plan costs $0/month for personal development of AI applications and models · Pro plan starts at $60/month, billed monthly, with a 30 day free trial · Support pricing details are not published; must contact the sales teamART is an open-source RL framework · ART is an open-source RL framework offered by Weights & Biases.
Platforms
AI developer platform to build AI agents, applications, and models
Adoption notes
DeploymentOffered as Cloud-hosted and Privately-hosted deployments
LicenseART is an open-source RL framework · ART is an open-source RL framework offered by Weights & Biases.
Model supportServerless inference supports OpenAI GPT OSS 20B and GPT OSS 120B · Serverless Inference offers models from OpenAI (GPT OSS 20B/120B), Alibaba (Qwen3 235B A22 · OpenAI OSS models GPT OSS 20B and GPT OSS 120B supported via Serverless Inference
Data controlRobust security measures including authentication, encryption, and a bug bounty program · Preconfigured security features for authentication, authorization, encryption, and more
Learning curveIntermediate
Primary use casesComputer vision, Contact centers, Evaluations, Fine-tune LLMs, Physical AI, RAG (Retrieval Augmented Generation), Train LLMs, Quant trading, Computer vision, contact centers, evaluations, fine-tuning LLMs, physical AI, RAG, trainin, Listed use cases include Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Ph, Computer vision, contact centers, evaluations, fine-tune LLMs, physical AI, RAG, train LLM, Computer vision, Contact centers, Evaluations, Fine-tune LLMs, Physical AI, RAG, Train LLM, Weights & Biases supports use cases including computer vision, contact centers, evaluation
What to verify before adopting
Evolution and major updates
Research in progressWeights & Biases timeline
A concise history of software releases and material product changes. Events appear only when a dated source supports what changed.
Scheduled for research
Building a reliable release history.
This profile is being checked for dated releases and material product changes. Nothing appears here until the exact date and event can be verified from a recorded source.
Dated event Short explanation Original source
Citation ledger
17 unique pagesRecorded sources
Facts, answers, structured details, milestones and primary resource links cite this shared ledger. Each external page appears once; release tags from the same GitHub project are grouped under one release history.
- 1wandb.ai/site 10 facts · 2 answers · Official site
- 2wandb.ai/site/pricing 6 facts · 4 answers · Pricing
- 3wandb.ai/site/security 6 facts · 2 answers · Security
- 4wandb.ai/site/support 6 facts · 2 answers · Official site
- 5wandb.ai/site/careers 6 facts · 1 answer · Official site
- 6wandb.ai/site/company/about-us 6 facts · 1 answer · Official site
- 7wandb.ai/site/customers 6 facts · 1 answer · Official site
- 8wandb.ai/site/press-releases 5 facts · 2 answers · Official site
- 9wandb.ai/site/models 6 facts · Official site
- 10wandb.ai/developer 1 fact · 1 answer · Official site
- 11wandb.ai/fully-connected/framework-integration 2 facts · Official site
- 12wandb.ai/pgv-developer 2 facts · Official site
- 13wandb.ai/the-eager-developer 2 facts · Official site
- 14wandb.ai/byyoung3/ml-news/reports/OpenAI-Scales-Back-Foundry-Plans-Focuses-on-In-House-AI-Chip-Development-with-Broadcom-and-TSMC--Vmlldzo5OTQ2ODk0 1 fact · Pricing
- 15wandb.ai/byyoung3/ml-news/reports/Roblox-plans-open-source-3D-foundational-model--Vmlldzo5MzEwMzA5 1 fact · Pricing
- 16wandb.ai/byyoung3/ml-news/reports/White-House-Unveils-America-s-AI-Action-Plan--VmlldzoxMzcyMDA0Nw 1 fact · Official site
- 17wandb.ai/developers 1 fact · Documentation
Research status67 substantive facts · 17 source pages · quality score 95/100
Connected directory
Semantic matchesExplore related solutions
These tools share a workflow, capability or audience with Weights & Biases. They may complement it rather than replace it, and are not presented as integrations or endorsements.
