Weights & Biases

Spec sheet

What it does

Weights & Biases is an AI developer platform for building, training, fine-tuning, evaluating and managing AI models and applications.Read 15 Oct 2026 · wandb.ai

Product

Weights & Biases describes itself as an AI developer platform for building AI agents, applications, and models.Read 29 Sep 2026 · wandb.ai

Audience

The maker presents the platform for AI developers and highlights use cases including model training, fine-tuning, AI application development, and production monitoring.Read 29 Sep 2026 · wandb.ai

Deployment

W&B offers multi-tenant SaaS, isolated dedicated cloud and customer-managed cloud or on-premises deployments.Read 15 Oct 2026 · wandb.ai

API

W&B provides a full Data API for exporting data logged to the service.Read 15 Oct 2026 · wandb.ai

Integrations

W&B is designed to integrate with customers' ML stacks and tools and offers managed or self-managed deployment choices.Read 15 Oct 2026 · wandb.ai

Security

The SaaS deployment states SOC 2 Type 2 certification, team-level data isolation and SSO support.Read 15 Oct 2026 · wandb.ai

Support

Support tiers are Standard, Standard Plus and Premium; Premium adds 24/7 coverage, faster response targets, roadmap sessions and engineering access.Read 15 Oct 2026 · wandb.ai

Headquarters

San Francisco, California, United StatesRead 28 Sep 2026 · wandb.ai

Founded

LinkedIn lists the company as founded in 2017.Read 15 Oct 2026 · linkedin.com

Artifacts

W&B Artifacts versions datasets and models with lineage and deduplication for reproducible pipelines.Read 15 Oct 2026 · wandb.ai

Availability commitment

The enterprise SLA commits to at least 99.5% monthly uptime for covered services, excluding AI Features and listed exclusions.Read 15 Oct 2026 · wandb.ai

Company headquarters

LinkedIn lists headquarters at 400 Alabama Street, San Francisco, California 94110, United States.Read 15 Oct 2026 · linkedin.com

Company size

LinkedIn lists Weights & Biases as a privately held software-development company with 201–500 employees.Read 15 Oct 2026 · linkedin.com

Documentation

W&B documentation includes product guides, API references, quickstarts, cookbooks and support articles; the current support site lists 217 W&B Models articles and 19 W&B Weave articles.Read 15 Oct 2026 · docs.wandb.ai

Experiment tracking

The platform automatically records machine-learning pipeline details and provides contextual visual analysis.Read 15 Oct 2026 · wandb.ai

Licence

The wandb client repository is released under the MIT License, while the hosted W&B service is commercial.Read 15 Oct 2026 · github.com

Limit: cost and storage

G2 reviewers report that premium pricing and storage or bandwidth costs can rise for small teams and large artifacts.Read 15 Oct 2026 · g2.com

Limit: iOS app coverage

The official iPhone app supports SaaS, Free, Academic and cloud Enterprise accounts but not dedicated or on-premises deployments.Read 15 Oct 2026 · apps.apple.com

Limit: learning curve

G2 reviewers repeatedly report that the large feature set, advanced configuration and integrations can overwhelm beginners.Read 15 Oct 2026 · g2.com

Limits

The pricing page states Pro is for early-stage teams with fewer than 50 employees and that customers exceeding that guideline must transition to Enterprise.Read 29 Sep 2026 · wandb.ai

Mobile app

The maker describes an iOS app for monitoring AI experiments and training runs; the listing says dedicated and on-premises deployments are not yet supported.Read 29 Sep 2026 · wandb.ai

Ownership

LinkedIn identifies the current organization as Weights & Biases by CoreWeave.Read 15 Oct 2026 · linkedin.com

Praise: experiment organization

G2 reviewers repeatedly praise run tracking, metric visualization, experiment comparison, artifact versioning and reproducibility.Read 15 Oct 2026 · g2.com

Rating on Apple App Store

4.1 out of 5 from 14 ratingsRead 15 Oct 2026 · apps.apple.com

Rating on Capterra

0.0 out of 5 from 0 reviewsRead 15 Oct 2026 · capterra.com

Rating on G2

4.5 out of 5 from 72 reviewsRead 15 Oct 2026 · g2.com

Rating on Gartner Peer Insights

4.8 out of 5 from 7 reviewsRead 15 Oct 2026 · gartner.com

Rating on Google Play

3.2 out of 5 from 24 reviewsRead 15 Oct 2026 · play.google.com

Registry

The Registry centralizes approved models and datasets with versioning, lineage and access controls.Read 15 Oct 2026 · wandb.ai

Reports

W&B Reports are collaborative dashboards and documents for sharing charts, metrics and findings.Read 15 Oct 2026 · wandb.ai

Reproducibility

W&B records experiment histories, code, hyperparameters and datasets so teams can reproduce models and track their evolution.Read 15 Oct 2026 · wandb.ai

SDK and installation

The open-source client is installed with pip install wandb, uses wandb.init in Python code, and includes CLI login and API-key workflows.Read 15 Oct 2026 · github.com

Self-hosting

Self-hosting requires Docker and Python and can run on Linux, macOS or Windows; customers manage their own storage and backups.Read 15 Oct 2026 · wandb.ai

Software Advice reviews

Software Advice lists Weights & Biases with no reviews and a starting price of $50 per month.Read 15 Oct 2026 · softwareadvice.com

Sweeps

W&B Sweeps runs configurable hyperparameter searches with custom distributions and early stopping.Read 15 Oct 2026 · wandb.ai

Tables

W&B Tables provides interactive visualization and exploration of logged machine-learning data.Read 15 Oct 2026 · wandb.ai

Weave

Weave provides tracing, evaluations, and monitoring for AI applications and agents.Read 29 Sep 2026 · wandb.ai

Weave evaluations

Weave offers an imperative evaluation API with comparison visualizations for detecting regressions in agent and LLM performance.Read 15 Oct 2026 · site.wandb.ai

Weave guardrails

Weave includes safety scorers for toxicity, bias, PII and hallucinations plus quality scorers for coherence, fluency and context relevance.Read 15 Oct 2026 · site.wandb.ai

Weave tracing

Weave captures inputs, outputs and metadata for each GenAI inference and organizes agent sessions, turns, tools and sub-agents.Read 15 Oct 2026 · site.wandb.ai

Plans and prices

Every Weights & Biases plan and price →

Where Specifiction places it

• Model registries#3 of 389.5
• ML Experiment Tracking Software#5 of 398.6
• MLOps Platforms#5 of 298.6
• Experiment Tracking#4 of 228.6
• Data Version Control Tools#7 of 368.6
• AI LLM Evaluation Tools#10 of 308.6