Registry › Compare › Promptfoo vs Weights & Biases Weave

Promptfoo vs Weights & Biases Weave

Promptfoo leads on trust: 92.2/100 (Grade A) against 84.9/100 (Grade A), a 7.3-point gap. Promptfoo leads on adoption and supply-chain integrity.

A Promptfoo 92.2

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.

promptfoo/promptfoo · #8 overall · #1 Observability & Evaluation · coverage A (4/5)

Choose Promptfoo if adoption and supply-chain integrity matter most.

+4.1Adoption: 905.4k weekly downloads against 212.8k
+2.1Safety / Integrity: 100% of recent commits signed, against 87%
+1.0Transparency: OSSF Scorecard 7.4 against 6.2
+0.5Maintenance

A Weights & Biases Weave 84.9

Weave is a toolkit for developing AI-powered applications, built by Weights & Biases.

wandb/weave · #87 overall · #3 Observability & Evaluation · coverage A (4/5)

Weights & Biases Weave doesn't lead on any scored dimension in this pair.

Where they differ

21.7

Safety / IntegrityPromptfoo +2.1

19.6

14.8

TransparencyPromptfoo +1.0

13.8

20.0

MaintenancePromptfoo +0.5

19.5

18.5

AdoptionPromptfoo +4.1

14.4

-0.8

Runtime calibrationWeights & Biases Weave +0.4

-0.4

1 dimension identical: Identity 18.0 · Full evidence table

An independent, evidence-based trust comparison of Promptfoo and Weights & Biases Weave, two Observability & Evaluation projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.

Full evidence

Signal	Promptfoopromptfoo/promptfoo	Weights & Biases Weavewandb/weave
HVTrust score	92.2	84.9
Evidence grade	A	A
Coverage grade	A	A
Overall rank	#8	#87
Rank in Observability & Evaluation	#1	#3
GitHub stars	25.7k	1.1k
Last updated	today	today
Build provenance	Yes	Yes
OSSF Scorecard	7.4 / 10	6.2 / 10
License	MIT	Apache-2.0
Downloads	905k/wk	213k/wk
Trust dimensions (points earned)
Safety / integrity / 25	21.7	19.6
Identity & provenance / 18	18.0	18.0
Transparency / 17	14.8	13.8
Maintenance / 20	20.0	19.5
Adoption / 20	18.5	14.4
Runtime capability surface (full matrix)
MCP server	Implemented	Implemented
External providers	3 — Amazon Bedrock, Anthropic, OpenAI	9 — Amazon Bedrock, Anthropic, Cohere, …
Requires API keys	Yes	No
Plugin surface	plugins	—
Provenance drift	Match	Partial

Open in the live compare tool → Promptfoo profile Weights & Biases Weave profile More Observability & Evaluation →

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.4 →