Alternatives

Alternatives to W&B Weave

7 LLM Evals & Observability rivals, ranked by the same evidence-graded leaderboard — W&B Weave itself ranks #3 with a PA Score of 35/100. Every “beats W&B Weave on” below comes from a judged head-to-head round with cited evidence — see the methodology.

#1
Braintrust
Braintrust Data, Inc.
PA Score 38/100vs W&B Weave →
coverage
43.8/100
Beats W&B Weave on: Use an official CLI · Run evals in CI and gate deployments on their results
#2
Cekura
Cekura
PA Score 36/100vs W&B Weave →
coverage
31.7/100
Beats W&B Weave on: Mask or redact sensitive data before it is stored in traces · Use an official CLI
#4
Helicone
Helicone, Inc.
PA Score 34/100vs W&B Weave →
coverage
32.4/100
Beats W&B Weave on: Version prompts and deploy changes to production without shipping code · Self-host the core product
#5
Langfuse
Langfuse GmbH
PA Score 34/100vs W&B Weave →
coverage
49.4/100
Beats W&B Weave on: Self-host the core product · Version prompts and deploy changes to production without shipping code
#6
Arize Phoenix
Arize AI, Inc.
PA Score 32/100vs W&B Weave →
coverage
43.5/100
Beats W&B Weave on: Self-host the core product · Version prompts and deploy changes to production without shipping code
#7
LangSmith
LangChain, Inc.
PA Score 23/100vs W&B Weave →
coverage
38.6/100
Beats W&B Weave on: Route outputs to human annotation queues for review and labeling · Set alerts on error rates, cost spikes, or eval-score drops and get notified in Slack, PagerDuty, or email
#8
Galileo
Galileo
PA Score 19/100vs W&B Weave →
coverage
24.8/100
Beats W&B Weave on: Run evaluators continuously on live production traffic, not just offline datasets · Route outputs to human annotation queues for review and labeling

Full leaderboard: LLM Evals & Observability arena →