Weights & Biases — research brief

# Weights & Biases — research brief

**Slug:** weights-biases · **Date:** 2026-09-21 · **Theme:** ai-infra (MLOps / AI developer platform)

## Labels
- **FACT** — primary company page, pricing, docs, or official about copy
- **SECONDARY** — press / third-party paraphrase
- **INFERENCE** — model teaching, explicitly labeled

## Company snapshot
- **Brand:** Weights & Biases (W&B); product surfaces wandb.ai (FACT — site)
- **Founded:** 2017 by Lukas Biewald, Chris Van Pelt, and Shawn Lewis in San Francisco (FACT — about-us)
- **Ownership:** Acquired by CoreWeave; about page states acquisition completed May 2025 (FACT — wandb.ai/site/company/about-us/; CoreWeave press May 5, 2025)
- **Positioning:** “The AI developer platform” for building AI agents, applications, and models — Models + Weave + Registry + Training/Inference attach (FACT — homepage)
- **Team size disclosure:** About page copy “Made up of 270 (and counting)…” (FACT — about-us; treat as company-published snapshot, not an audited headcount)
- **Named customers (logo / about claims):** OpenAI, NVIDIA, Cohere among others on about/homepage (FACT — about-us / homepage; references, not revenue mix)

## Teaching arc (revenue ladder)
**Free Cloud ($0) / Personal self-hosted ($0, non-corporate) → Academic free Pro → Pro SaaS (starts $60/mo) + usage meters (storage, Weave ingestion, Inference) → Enterprise / Advanced Enterprise (custom; SSO, single-tenant / private host, HIPAA options) → usage attach: Artifacts storage, Weave ingestion, W&B Inference, CoreWeave Sandboxes credits.**

Land is Free experiment tracking + Weave evals (and OSS client SDK); expand is Pro seats + overages; enterprise is custom security/compliance + private hosting; meters on Artifacts storage and Weave ingestion attach usage revenue as MLOps/LLMOps depth grows.

## Pricing (FACT — wandb.ai/site/pricing/)

### Cloud-hosted
| Plan | Price | Key quotas / notes |
|---|---|---|
| **Free** | $0/mo | Up to 5 model seats; 5 GB/mo storage; 1 GB/mo Weave ingestion; experiment tracking, registry & lineage, Weave evals/tracing/scorers; community support |
| **Pro** | Starts at **$60/month**, billed monthly (or annually upfront) | Up to 10 model seats; 100 GB/mo storage (+ **$0.03/GB** overage); 1.5 GB/mo Weave ingestion (+ **$0.10/MB** overage); unlimited teams, team ACLs, service accounts, CI/CD automations, Slack/email alerts, priority email & chat; **for early-stage teams fewer than 50 employees** — exceed → required move to Enterprise; 30-day free trial |
| **Enterprise** | Custom | Single-tenant + region choice; HIPAA option; private connectivity; CMEK; SSO; SCIM; custom roles; audit logs; enterprise support; dedicated scalable deployment |

### Privately-hosted
| Plan | Price | Notes |
|---|---|---|
| **Personal** | $0/mo | 1 user seat; `pip install wandb` + `wandb server start`; Docker/Python; **corporate use not allowed** |
| **Advanced Enterprise** | Custom | Flexible / on-prem deployment; same security stack as Enterprise cloud; free enterprise trial license path |

### Academic (FACT — pricing FAQ)
- Free Pro license for academic research not connected to a for-profit entity (institutional email required)
- Includes Pro features, unlimited tracked hours, **200 GB** cloud storage, up to **25 GB/mo** Weave ingestion, up to **100 seats**; extra storage $0.03/GB

### Usage / attach meters (FACT — pricing table + FAQ)
- **Storage** (Artifacts + run data): included quotas; Pro overage $0.03/GB; calculated as 30-day average GB
- **Weave data ingestion:** included quotas; Pro overage $0.10/MB; billed monthly in arrears
- **W&B Inference:** Free credits for a limited time on Free; Pro shows **$5/mo** free credit (limited time); additional inference billed monthly per-model
- **CoreWeave Sandboxes** (public preview): Free **$10/mo** credit (limited); Pro **$25/mo** credit (limited); Enterprise customizable
- **Billing cadence:** Pro monthly/annual upfront for seats; Weave / Inference / storage monthly in arrears; Enterprise invoiced annually upfront

### Security claims (FACT — homepage / pricing)
- SOC 2 Type II across plans (pricing compare table)
- Homepage: ISO/IEC 27001:2022, 27017:2015, 27018:2019; SOC 2; HIPAA; NIST 800-53 alignment; GDPR alignment language

## Products (FACT — homepage + docs)
- **W&B Models** — experiment tracking (`wandb.init` / `run.log`), metrics, hyperparams
- **Artifacts** — version datasets/models/prompts as run inputs/outputs; lineage graphs (docs.wandb.ai/models/artifacts)
- **Registry** — governed collections (datasets, models, prompts, code, metadata)
- **W&B Weave** — LLM/agent tracing, evaluations, scorers, production monitoring (docs.wandb.ai/weave)
- **Training / Inference** — fine-tune and serve hosted & fine-tuned models (homepage product grid)
- **Reports, Automations, SDK, Skills/MCP** — collaboration and agent tooling (homepage)
- **Deployment:** SaaS | Dedicated | Customer-managed (homepage)

## What we do **not** claim
- No invented ARR, valuation, or deal price (CoreWeave acquisition terms were not disclosed in company press; The Information ~$1.7B is SECONDARY rumor — **not used** on canvas)
- No invented user counts beyond company-published phrasing; CoreWeave acquisition PR “over 1 million AI engineers” is SECONDARY press — prefer about-page language on canvas
- No private P&L / COGS lines

## Sources
1. https://wandb.ai/site/pricing/
2. https://wandb.ai/site/
3. https://wandb.ai/site/company/about-us/
4. https://docs.wandb.ai/models/artifacts
5. https://docs.wandb.ai/weave/concepts/what-is-weave
6. https://www.coreweave.com/news/coreweave-completes-acquisition-of-weights-biases-2 (acquisition completion — SECONDARY/press primary for deal close date)
7. https://investors.coreweave.com/news/news-details/2025/CoreWeave-to-Acquire-Weights--Biases---Industry-Leading-AI-Developer-Platform-for-Building-and-Deploying-AI-Applications/default.aspx (announce)