Latest Weights & Biases News & Updates

See the latest news and media coverage for W&B. We track all announcements, press releases, and industry mentions in real time, all in one place.

Weights & Biases (W&B)

AI developer platform

wandb.ai

Headquarters: San Francisco, United States
Founded year: 2017
Company type: Private company
Number of employees: 300–500
Industry: Software

Last updated Today

Latest news about Weights & Biases (W&B)

In short: W&B was acquired by CoreWeave while launching major AI agent tools, including the ARIA research agent and the Weave observability platform.

Company announcements

July 13 W&B

W&B improves GRPO training efficiency with shared prefixes

The AOM backend on ART boosts trajectories per second up to 12x over previous implementations.

May 26 W&B

W&B launches MCP server with 20 tools

It enables agents to read experiments, monitor training, and drive research loops. The server is now generally available.

April 29 W&B

W&B launches IBM Granite 4.1 8B on Inference

It offers token efficiency, openness, and tool calling at $0.05/$0.10 per 1M tokens with 131k context. Features OpenAI-compatible API and Weave tracing.

April 23 W&B

W&B serves top AI companies without sales teams

Aaron Katz built a $15B company using a shared Slack channel with engineers from Anthropic, OpenAI, LangChain, and Vercel. They gained 3000 customers in four years.

Media coverage

January 4 MSN

CoreWeave to acquire Weights & Biases

CoreWeave to acquire Weights & Biases.

16 October 2025 MSN

CoreWeave Launches Serverless RL in Collaboration with W&B and OpenPipe

CoreWeave, Inc. (NASDAQ:CRWV) is a US‑based AI cloud infrastructure company headquartered in Livingston, New Jersey. It provides GPU infrastructure, developer tooling, and compute services to...

16 July 2025 Amazon Web Services

Weights & Biases is helping developers productionize AI solutions and realize AI innovation

Weights & Biases is helping developers productionize AI solutions and realize AI innovation.

2 July 2025 Yahoo Finance

CoreWeave (CRWV) Unveils New AI Tools Following Weights & Biases Acquisition

CoreWeave, Inc. (NASDAQ:CRWV) is one of the 12 best cryptocurrency and blockchain stocks to buy. The...

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