Vendors / Weights & Biases
Weights & Biases
Named in 9 of 50 AI answers across 1 category in September 2026. Best position: LLM observability and evals, 18% answer share, ranked #12, named first in 0%.
18%
Best share LLM observability and evals
What Weights & Biases is
Weights & Biases is an AI developer platform for building AI agents, applications and models. It is designed for AI developers. It offers a free plan, a Pro plan starting at $60 per month billed monthly, and custom Enterprise plans.
The platform builds and manages AI models, fine-tunes them for agentic tasks, and serves hosted and fine-tuned models. It supports iterating on, evaluating and monitoring agents. A registry stores datasets, models, prompts, code and metadata.
By category
First edition
| Category | Rank | Answer share | Named first | Models | Δ |
|---|---|---|---|---|---|
| LLM observability and evalsAI infra | #12 of 13 | 0% | GPT-5.6 Sol, ChatGPT, GPT-5.6 Luna, Claude Opus 5, Claude Fable 5, Sonar Reasoning Pro | new |
What the models said
“Choose Weave when W&B is already where your datasets, experiment lineage, and team habits live.”
Work at Weights & Biases?
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