Pick Braintrust if
aI teams who will write a scorer and pay when processed data or scores blow past Starter.
Read the Braintrust pageBraintrust vs W&B Weave
Our take
Pick Braintrust if you're on a aI team who will write a scorer and pay when processed data or scores blow past Starter. Pick W&B Weave if you're on a teams already on W&B who will stay on Free at $0 (5 model seats, 5 GB storage, 1 GB Weave ingest) while they open a first Traces table, then Pro at $60/month when they need team and 1.5 GB ingest. Skip Braintrust if you're a developer who only want a $0 request table
Best for
Braintrust Measure the agent before you ship
W&B Weave LLM traces under the same W&B account at a public $
Free plan
Braintrust $0 · /month. $10 model credits + token rates. 1 GB processed data, then $4/GB. 10k scores, then $2.50/1k. 14-day retention. Unlimited users, projects, datasets, playgrounds, experiments. No credit card
W&B Weave $0 · /month. Up to 5 model seats. 5 GB/mo storage. 1 GB/mo Weave ingestion. Tracing, evals, scorers. Community support
Lowest paid
Braintrust Pro $249/mo
W&B Weave Pro $60/mo, monthly only
Coding agent
Braintrust Loop agent
W&B Weave
Runs where
Braintrust
W&B Weave Hosted
Watch out
Braintrust $0 is the platform fee
W&B Weave Pro ingest overage is $0.10/MB (~$100/GB)
Last checked
Braintrust 2026-10-27 · braintrust.dev/pricing
W&B Weave 2026-10-27 · wandb.ai/site/pricing
Which one, then?
Pick W&B Weave if
teams already on W&B who will stay on Free at $0 (5 model seats, 5 GB storage, 1 GB Weave ingest) while they open a first Traces table, then Pro at $60/month when they need teams and 1.5 GB ingest.
Read the W&B Weave page