# Weights & Biases

Weights & Biases is an AI developer platform for building GenAI applications and fine-tuning LLMs. Its two products are W&B Weave and W&B Models. A client logs data with one line of code, and a server stores it, with Weave data in a ClickHouse database and Models data in a cloud-native database.

Page: https://slateindex.ai/brand/weights-biases · data of 2026-11-02

## Facts

- Company type: Division of CoreWeave
- Latest funding: $50M round led by Daniel Gross and Nat Friedman
- Deployment: Data residency and isolated compute and storage are supported
- Compliance: ISO/IEC 27001:2022, ISO/IEC 27017:2015, ISO/IEC 27018:2019, SOC 2 Type II

## Products

- W&B Weave: Platform for building GenAI applications, with dynamic leaderboards and audio monitors added in January 2026.
- W&B Models: Experiment tracking for model development, with Sweeps for hyperparameter optimization, Tables and Reports, and pinned runs and baseline comparisons added in January 2026.

## Rankings

| Category | Rank | Visibility | Mentions |
|---|---|---|---|
| MLOps Platforms | 6 of 61 | 29.7 | 47 |

## By engine

| Engine | Visibility | Mention rate |
|---|---|---|
| chatgpt | 26.7 | 59.3% |
| google_ai_mode | 37.0 | 66.7% |
| perplexity | 25.4 | 48.1% |

## Definitions

- Visibility (0–100): how often and how high AI answers name the brand, weighted by position.
- Mention rate: share of collected AI answers that name the brand.
- Share of voice: the brand's mentions as a share of all brand mentions in the category.
- Citation authority: share of answers naming the brand that cite the brand's own site.

Cite as: SlateIndex, “Weights & Biases AI visibility profile”, https://slateindex.ai/brand/weights-biases, data of 2026-11-02. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).