Weights & Biases
Founded Year
2017Stage
Acquired | AcquiredTotal Raised
$250MValuation
$0000About Weights & Biases
Weights & Biases operates as an artificial intelligence (AI) developer platform that provides tools for machine learning and artificial intelligence. The company offers products for building, fine-tuning, and deploying machine learning models, as well as tools for software developers to track and evaluate large language model applications. It serves the AI and machine learning sectors within the technology industry. It was founded in 2017 and is based in San Francisco, California. In March 2025, Weights & Biases was acquired by CoreWeave.7B.
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ESPs containing Weights & Biases
The ESP matrix leverages data and analyst insight to identify and rank leading companies in a given technology landscape.
The large language model (LLM) application development market provides frameworks, tools, and platforms for building, customizing, and deploying applications powered by pre-trained language models. Companies in this market offer solutions for fine-tuning models on domain-specific data, creating prompt engineering workflows, developing retrieval-augmented generation systems, and orchestrating LLM-p…
Weights & Biases named as Leader among 15 other companies, including Databricks, Cohere, and LangChain.
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Research containing Weights & Biases
Get data-driven expert analysis from the CB Insights Intelligence Unit.
CB Insights Intelligence Analysts have mentioned Weights & Biases in 6 CB Insights research briefs, most recently on May 1, 2025.
May 1, 2025 report
State of AI Q1’25 Report
Apr 3, 2025 report
State of Venture Q1’25 Report
Mar 6, 2025
The AI agent market map: March 2025 edition
Sep 29, 2023
The machine learning operations (MLOps) market map
Aug 31, 2023
The responsible AI market mapExpert Collections containing Weights & Biases
Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.
Weights & Biases is included in 6 Expert Collections, including Artificial Intelligence (AI).
Artificial Intelligence (AI)
37,333 items
Companies developing artificial intelligence solutions, including cross-industry applications, industry-specific products, and AI infrastructure solutions.
AI 100 (All Winners 2018-2025)
300 items
Winners of CB Insights' 5th annual AI 100, a list of the 100 most promising private AI companies in the world.
Generative AI
2,951 items
Companies working on generative AI applications and infrastructure.
AI 100 (2024)
100 items
AI agents (March 2025)
376 items
Companies developing AI agent applications and agent-specific infrastructure. Includes pure-play emerging agent startups as well as companies building agent offerings with varying levels of autonomy. Not exhaustive.
AI agents & copilots
1,771 items
Companies developing AI agents, assistants/copilots, and agentic infrastructure. Includes pure-play emerging agent startups as well as companies building agent offerings with varying levels of autonomy.
Latest Weights & Biases News
Oct 28, 2025
The company, which brands itself as "The Essential Cloud for AI," intends to pursue FedRAMP and other authorizations to offer its high-performance AI cloud services to U.S. government agencies and the Defense Industrial Base. CoreWeave 's federal division will focus on delivering secure, compliant cloud infrastructure as government agencies accelerate their adoption of AI capabilities. "America's economic competitiveness and national security rely on the continued advancement of secure, high-performance AI infrastructure," said Michael Intrator, Co-founder, Chairman, and CEO of CoreWeave. "We will bring our platform to the federal market in alignment with the government's rigorous standards to help agencies accelerate innovation and strengthen mission performance." The company plans to adapt its AI cloud platform to meet U.S. government cybersecurity standards and compliance requirements. CoreWeave will leverage experience gained through its acquisition of Weights & Biases (W&B) to build on existing public sector capabilities. CoreWeave has recently expanded its Washington, DC presence and made several government-focused leadership appointments. The company collaborates with NVIDIA to integrate advanced computing and networking technologies across its platform, including NVIDIA AI infrastructure and Quantum InfiniBand networking. The announcement was made during CoreWeave's participation in the NVIDIA GTC GPU Technology Conference in Washington, DC. This article was generated with the support of AI and reviewed by an editor. For more information see our T&C. ProPicks AI evaluates NVDA alongside thousands of other companies every month using 100+ financial metrics Using powerful AI to generate exciting stock ideas, it looks beyond popularity to assess fundamentals, momentum, and valuation. The AI has no bias—it simply identifies which stocks offer the best risk-reward based on current data with notable past winners that include Super Micro Computer (+185%) and AppLovin (+157%). Want to know if NVDA is currently featured in any ProPicks AI strategies, or if there are better opportunities in the same space?
Weights & Biases Frequently Asked Questions (FAQ)
When was Weights & Biases founded?
Weights & Biases was founded in 2017.
Where is Weights & Biases's headquarters?
Weights & Biases's headquarters is located at 400 Alabama Street, San Francisco.
What is Weights & Biases's latest funding round?
Weights & Biases's latest funding round is Acquired.
How much did Weights & Biases raise?
Weights & Biases raised a total of $250M.
Who are the investors of Weights & Biases?
Investors of Weights & Biases include CoreWeave, Generative AI Accelerator Challenge, Coatue, Bloomberg Beta, Insight Partners and 14 more.
Who are Weights & Biases's competitors?
Competitors of Weights & Biases include Domino, LatticeFlow AI, Chalk, Traceloop, 2021.AI and 7 more.
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Compare Weights & Biases to Competitors
Seldon specializes in machine learning operations (MLOps) solutions and focuses on the deployment and management of machine learning models for enterprise companies. The company offers a software framework that enables businesses to deploy, monitor, and manage machine learning models. Seldon's products cater to a variety of industries that require robust machine learning operations, including financial services, automotive, and insurance sectors. It was founded in 2014 and is based in Shoreditch, United Kingdom.
Braintrust is a technology company that builds a platform for developing AI applications within the artificial intelligence sector. The company provides tools for evaluating and managing large linguistic models, including prompt management, performance tracking, and dataset management. Braintrust's solutions include features such as real-time execution trace visualization, monitoring, and the option for self-hosting to meet data control and compliance needs. It was founded in 2023 and is based in San Francisco, California.
Fiddler focuses on artificial intelligence (AI) observability and responsible AI governance in the technology sector. The company provides services such as monitoring, explainable AI, and analytics to support the performance and integrity of machine learning models and large language models. Fiddler serves sectors that need AI governance and risk management, including government and financial services. It was founded in 2018 and is based in Palo Alto, California.
DataRobot provides artificial intelligence (AI) applications and platforms within the enterprise AI suite and agentic AI platform domains. Its offerings include a suite of AI tools that integrate into business processes, allowing teams to manage AI, along with AI governance, observability, and foundational tools. It serves sectors including finance, supply chain, energy, financial services, government, healthcare, and manufacturing, and collaborates with NVIDIA and SAP. It was founded in 2012 and is based in Boston, Massachusetts.
H2O.ai specializes in generative artificial intelligence (AI) and machine learning. It provides a comprehensive AI cloud platform for various industries. The company offers a suite of AI cloud products, including automated machine learning, distributed machine learning, and tools for AI-driven data extraction and processing. H2O.ai caters to sectors such as financial services, healthcare, insurance, manufacturing, marketing, retail, and telecommunications. H2O.ai was formerly known as 0xdata. It was founded in 2012 and is based in Mountain View, California.
Domino operates in the enterprise Artificial Intelligence (AI) platform sector, providing a platform for building, deploying, and managing AI models. It focuses on collaboration, governance, and cost reduction. It serves sectors that utilize model-driven business strategies, including life sciences, financial services, manufacturing, and insurance. It was founded in 2013 and is based in San Francisco, California.
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