DeepYard

Chroma vs promptfoo

Side-by-side comparison built from DeepYard's structured catalog. Content updated Aug 21, 2026.

Direct Answer

Chroma suits teams needing freemium free tier, vector database focus, and 29,125 GitHub stars in current listing data. promptfoo suits teams needing open-source access, evaluation focus, and 24,450 GitHub stars in current listing data. This summary reflects catalog metadata only for decision support, not independent testing.

What this comparison weighs

  • Pricing and free-tier availability
  • License model and deployment fit
  • GitHub adoption and contributor depth
  • Catalog tags, integrations, and supported workflows
C

Chroma

The open-source AI-native vector database — 27K+ stars

OSSfreemium
29.1Ktoday189
Visit GitHub
p

promptfoo

Test and evaluate LLM prompts and agents — 11K+ stars

OSSFree
24.4Ktoday318
Visit GitHub
MetricChromapromptfoo
GitHub Stars29.1K24.4K
Contributors189318
Last CommitAug 21, 2026Aug 21, 2026
Open Issues799515
Licenseopen-sourceopen-source
Pricingfreemiumopen-source
Free TierYesYes
Categorydev-toolsdev-tools
TrendingNoNo

Choose Chroma if you need

  • • Chroma stands out for Vector Database workflows that are not listed for promptfoo.
  • • Chroma is the stronger pick when Langchain matters because that capability is listed only on its profile.
  • • Chroma shows broader GitHub adoption with 29,125 stars versus 24,450 for promptfoo.

Choose promptfoo if you need

  • • promptfoo stands out for Evaluation workflows that are not listed for Chroma.
  • • promptfoo is the stronger pick when Anthropic matters because that capability is listed only on its profile.
  • • promptfoo has a larger visible contributor base (318 vs 189).

Meaningful differences

  • • Pricing model: Chroma is listed as freemium, while promptfoo is listed as open-source.
  • • Workflow emphasis: Chroma highlights Vector Database, while promptfoo highlights Evaluation.
  • • GitHub adoption: Chroma shows 29,125 stars versus 24,450 for promptfoo.
  • • Contributor count: Chroma lists 189 contributors and promptfoo lists 318.

Shared capabilities

  • • Open Source
  • • Openai

Shared Tags

open-source

Only in Chroma

vector-databaseembeddingsragsimilarity-searchpython

Only in promptfoo

evaluationtestingred-teamingsecurityci-cd

Limitations and evidence

  • • DeepYard compares structured public metadata; this is not an independent benchmark unless a test record is shown.
  • • Signals such as stars, contributors, and last commit indicate public activity, not purchase fit or runtime quality.
  • • Pricing and feature coverage reflect the stored listing snapshot and may lag vendor changes between refreshes.

Source links

Manifest content date: 2026-08-21

About Chroma

Chroma is the open-source vector database built for AI applications. Store embeddings alongside metadata, perform similarity search, and build RAG pipelines with a simple Python/JavaScript API. Runs locally or as a hosted service, with built-in support for automatic embedding generation.

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About promptfoo

promptfoo is an open-source tool for testing, evaluating, and red-teaming LLM applications. Run automated evaluations across multiple models and prompts, compare outputs side-by-side, detect regressions, and test for security vulnerabilities. Supports custom assertions, CI/CD integration, and model-graded evaluations.

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