| Description |
| Summary |
AI developer platform for training, fine-tuning, evaluating, tracing, monitoring and productionizing AI models, agents and applications; acquired by CoreWeave in 2025.
|
|
|
|
| Description |
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
|
|
|
|
| Funding stage |
Acquired
|
|
|
|
| Company type |
Unknown
|
|
|
|
| Pricing model |
subscription, usage based
|
|
|
|
| Last updated |
Jun 21, 2026
|
|
|
|
| Financials |
| 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)
|
|
|
|
| Relationships |
| 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
|
|
|
|
| Segments & Industries |
| Segments |
AI Workflows, AI Agents, LLM Fine-tuning, AI Developer Tools, Knowledge & RAG, LLM Deployment, AI Quality & Observability, Traditional ML, AI Governance & Risk, Chatbots, Analytics & BI
|
|
|
|
