Weights & Biases (weights-and-biases)

Weights & Biases is the ML developer platform for experiment tracking, model registry, artifact management, sweeps, reports, and (Weave) GenAI evaluation. The W&B API is primarily a GraphQL endpoint, surfaced through a Python wandb.Api SDK.

URL: Visit APIs.json URL

Run: Capabilities Using Naftiko

Type

• x-type: company

APIs

• W&B GraphQL API - Public API at https://api.wandb.ai/graphql. Backs the Python wandb.Api() SDK. Runs, projects, sweeps, artifacts, reports, registries, automations.
• W&B Import API (HTTP) - HTTP file/import endpoint used by the wandb client to push metrics and artifacts.

Tags

• ML, MLOps, Experiment Tracking, Model Registry, GenAI

Timestamps

• Created: 2026-05-08
• Modified: 2026-05-08

Common Properties

• Website
• Documentation
• Pricing
• Source: wandb client
• Plans
• RateLimits
• FinOps

Notes

• Pricing reconciled (research): Free (5 model seats, 5 GB storage), Pro from $60/mo (10 model seats, 100 GB), Enterprise custom. Weave data ingestion at $0.10/MB on Pro. Self-hosted W&B Server is free for personal use.
• Public API is GraphQL, not REST — query semantics handled through the SDK with MongoDB-style filtering on runs/artifacts.
• No published per-account REST rate limit.

Maintainers

FN: Kin Lane

Email: kin@apievangelist.com