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Weights & Biases

https://wandb.ai/ Research Team Data
Acquired Acquired by CoreWeave

AI developer platform for training, fine-tuning, evaluating, tracing, monitoring and productionizing AI models, agents and applications; acquired by CoreWeave in 2025.

W&B Models and Weave support experiment tracking, model training, fine-tuning, inference, evaluation, tracing, monitoring and production AI application development, integrated with CoreWeave cloud after acquisition.

Positioning

AI developer platform for models, agents, evaluation and observability

Key facts

HQ location
San Francisco, CA, USA
Founded
2017
Employee range
201-500 (~304)
Funding stage
Acquired
Company type
Unknown (Acquired (by CoreWeave))
Pricing model
Subscription Usage Based (Usage-based SaaS subscription / enterprise contracts)
Last updated
Jun 21, 2026

Revenue estimate

Unknown

Valuation estimate

$1.7B (acquisition price)

Investments

Acquired by CoreWeave for $1.7B (March 2025). Pre-acquisition: $250M raised (Coatue, GV, Insight Partners, NVIDIA)

Target customers

AI labs, ML engineers, AI developers and enterprise model/application teams

Key competitors

Arize AI, Neptune.ai

Known customers

OpenAI, NVIDIA, AstraZeneca, Canva, Snowflake

Classification (raw research text)

Core focus
ML experiment tracking
Core industry
Enterprise AI development / MLOps
Core category
AI developer platform / MLOps and LLMOps

Shown verbatim from the research spreadsheet — deriving structured segment/industry tags from this text is a future phase.

Attribute breakdown

  • AI Workflows Secondary feature
  • AI Fine-tuning / Custom Model Training Primary focus
  • Agent Builder / Agent Configuration Secondary feature
  • Multi-agent Orchestration / Runtime Secondary feature
  • System / API Integration Secondary feature
  • Prompt Management / Prompt Engineering Secondary feature
  • Retrieval-Augmented Generation Secondary feature
  • AI / LLM Data Pipeline Secondary feature
  • Model Deployment / Inference Infrastructure Primary focus
  • Traditional Machine Learning Primary focus
  • AI Quality Assurance / LLM Evaluation Primary focus
  • AI Observability / Monitoring Primary focus
  • AI Security / Guardrails Secondary feature
  • Data Privacy / PII / Confidential AI Secondary feature
  • AI Governance / Policy Management Secondary feature
  • AI Risk / Compliance Secondary feature
  • AI Asset Inventory / Model Registry Primary focus
  • Human-in-the-Loop Review / Feedback Secondary feature
  • Text Chatbots / Conversational Assistants Secondary feature
  • Analytics / BI / Decision Intelligence Primary focus
  • Enterprise App / Internal Tool Builder Secondary feature
Show all 32 attributes
  • AI Workflows Secondary feature
  • AI Automation / Business Process Automation Not emphasized
  • AI Fine-tuning / Custom Model Training Primary focus
  • Agent Builder / Agent Configuration Secondary feature
  • Multi-agent Orchestration / Runtime Secondary feature
  • System / API Integration Secondary feature
  • Prompt Management / Prompt Engineering Secondary feature
  • Retrieval-Augmented Generation Secondary feature
  • Graph RAG / Knowledge Graph Retrieval Not emphasized
  • Enterprise Search / Knowledge Management Not emphasized
  • AI / LLM Data Pipeline Secondary feature
  • Document AI / Document Processing Not emphasized
  • Model Deployment / Inference Infrastructure Primary focus
  • Traditional Machine Learning Primary focus
  • AI Quality Assurance / LLM Evaluation Primary focus
  • AI Observability / Monitoring Primary focus
  • AI Security / Guardrails Secondary feature
  • Data Privacy / PII / Confidential AI Secondary feature
  • AI Governance / Policy Management Secondary feature
  • AI Risk / Compliance Secondary feature
  • AI Asset Inventory / Model Registry Primary focus
  • Human-in-the-Loop Review / Feedback Secondary feature
  • Call Transcription / Speech-to-Text Data Capture Not emphasized
  • Conversation Intelligence / Speech Analytics Not emphasized
  • Text Chatbots / Conversational Assistants Secondary feature
  • Voice AI Agents Not emphasized
  • Voice Infrastructure / STT / TTS Not emphasized
  • AI for Customer Experience / Support Automation Not emphasized
  • Sales / Revenue Intelligence Not emphasized
  • Analytics / BI / Decision Intelligence Primary focus
  • Enterprise App / Internal Tool Builder Secondary feature
  • Vertical-Specific AI Not emphasized