W&B Weave: pricing and features
by Weights & Biases (CoreWeave)
Prices and features checked 2026-10-17 on the vendor's own pages. Anything we could not confirm says “not verified”.
What is W&B Weave? Weights & Biases' toolkit for tracing, evaluations, scorers, annotation queues and versioned prompts and datasets. W&B pricing is now published as CoreWeave Forge; Weave is billed by data ingestion.
Best for: Teams already using W&B for model training that want LLM tracing and evals in the same account.
Pricing
- Free tier
- Free $0: 1 GB/month Weave data ingestion [source, checked 2026-10-17]
- Entry paid price
- Pro from $60/month: 1.5 GB/month ingestion, then $0.10 per MB; for teams under 50 employees [source, checked 2026-10-17]
- What you pay for (meter)
- Weave data ingestion (GB/MB) [source]
- Licence
- Weave SDK: Apache-2.0; the platform is a hosted service [source]
- Self-hosting
- Self-managed Weave instance [source]
- Data retention
- not verified
Features
| OpenTelemetry | Import OpenTelemetry traces [source] |
|---|---|
| CI gating | not verified |
| LLM-as-judge | LLM-as-a-judge metrics listed; scorers can call an LLM [source] |
| Human annotation | Annotation queues [source] |
| Prompt management | Versioned prompts [source] |
| Dataset versioning | Versioned datasets [source] |
| SOC 2 / HIPAA | SOC 2 Type II listed; the HIPAA option relies on bring-your-own-bucket, which the page says is not available with Weave [source] |
Compare
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Other tools: Langfuse · Braintrust · LangSmith · Arize AX and Phoenix · Promptfoo · DeepEval and Confident AI · Galileo (Splunk Agent Observability) · Maxim AI · Helicone · Comet Opik · Ragas
Vendors: want a labelled featured slot on tool pages like this one? Sponsorships are always marked “Sponsored” and never change table order, verdicts or facts. See placements and how to book.