Comparison
ChainForge vs promptfoo
Verdict
Pick ChainForge if web-based visual programming tool for prompt testing on LLMs; supports local installation and Docker for advanced feature access; pick promptfoo if promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support.
Markdown twin · ChainForge alternatives · promptfoo alternatives
GraphCanon updated today
vs
Trust & integrity
| Signal | ChainForge | promptfoo |
|---|---|---|
| Maintenance | Steady (70d since push) As of today · github_public_v1 | Very active (0d since push) As of 2w · github_public_v1 |
| Provenance | Not a fork · Personal account As of today · github_public_v1 | Not a fork · Organization account As of 2w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- ChainForge
- An open-source visual programming environment for battle-testing prompts to LLMs.
- promptfoo
- Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming.
Stars
- ChainForge
- 3.0k
- promptfoo
- 24k
Forks
- ChainForge
- 256
- promptfoo
- 2.1k
Open issues
- ChainForge
- 70
- promptfoo
- 481
Language
- ChainForge
- TypeScript
- promptfoo
- TypeScript
Adopt for
- ChainForge
- Web-based visual programming tool for prompt testing on LLMs; supports local installation and Docker for advanced feature access.
- promptfoo
- promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support.
Persona
- ChainForge
- -
- promptfoo
- -
Runtime
- ChainForge
- -
- promptfoo
- -
License
- ChainForge
- MIT
- promptfoo
- MIT
Last pushed
- ChainForge
- Jun 10, 2026
- promptfoo
- Aug 1, 2026
Categories
- ChainForge
- Evaluation & Observability, LLM Frameworks
- promptfoo
- Evaluation & Observability, LLM Frameworks
Trust and health
Maintenance
- ChainForge
- Steady (60%)
- promptfoo
- Very active (96%)
Days since push
- ChainForge
- 70d
- promptfoo
- 0d
Open issues (now)
- ChainForge
- 70
- promptfoo
- 481
Stars delta
- ChainForge
- +14 (30d)
- promptfoo
- Unknown
Open issues delta
- ChainForge
- +1 (30d)
- promptfoo
- Unknown
Owner type
- ChainForge
- User
- promptfoo
- Organization
Full report
- ChainForge
- Trust report
- promptfoo
- Trust report
Shared compatibility
- Python · ChainForge: Python runtime · promptfoo: Python runtime
Choose ChainForge if…
- Tags unique to ChainForge: ai, evaluation, large language models, llmops.
- Need extensive features beyond web limitations
- Leaner open-issue backlog (70).
When NOT to use ChainForge
- Looking for a solution without local setup or Docker support
- Prefer not managing API keys via environment variable configuration
Choose promptfoo if…
- Tags unique to promptfoo: ci-cd, evaluation-framework, llm-evaluation, pentesting.
- For comparing performance across GPT, Claude, Gemini, DeepSeek
- More GitHub stars (24k vs 3.0k) - visibility, not fit.
When NOT to use promptfoo
- If you do not require comparative analysis among multiple LLM models
- If your project does not benefit from the specific red teaming capabilities offered by promptfoo
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (ianarawjo/ChainForge) · observed Aug 20, 2026
- GitHub forks (ianarawjo/ChainForge) · observed Aug 20, 2026
- Last push (ianarawjo/ChainForge) · observed Jun 10, 2026
- License file (MIT) · observed Aug 20, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (promptfoo/promptfoo) · observed Aug 2, 2026
- GitHub forks (promptfoo/promptfoo) · observed Aug 2, 2026
- Last push (promptfoo/promptfoo) · observed Aug 1, 2026
- License file (MIT) · observed Aug 2, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: ChainForge 3.0k · promptfoo 24k (synced Aug 20, 2026).
Common questions
- What is the difference between ChainForge and promptfoo?
- ChainForge: An open-source visual programming environment for battle-testing prompts to LLMs.. promptfoo: Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming.. See the comparison table for live GitHub stats and shared categories.
- When should I choose ChainForge over promptfoo?
- Choose ChainForge over promptfoo when Tags unique to ChainForge: ai, evaluation, large language models, llmops; Need extensive features beyond web limitations; Leaner open-issue backlog (70).
- When should I choose promptfoo over ChainForge?
- Choose promptfoo over ChainForge when Tags unique to promptfoo: ci-cd, evaluation-framework, llm-evaluation, pentesting; For comparing performance across GPT, Claude, Gemini, DeepSeek; More GitHub stars (24k vs 3.0k) - visibility, not fit.
- When should I avoid ChainForge?
- Looking for a solution without local setup or Docker support Prefer not managing API keys via environment variable configuration
- When should I avoid promptfoo?
- If you do not require comparative analysis among multiple LLM models If your project does not benefit from the specific red teaming capabilities offered by promptfoo
- Is ChainForge or promptfoo more popular on GitHub?
- promptfoo has more GitHub stars (23,838 vs 3,027). Stars measure visibility, not whether either tool fits your constraints.
- Are ChainForge and promptfoo open source?
- Yes - both are open-source projects on GitHub (ChainForge: MIT, promptfoo: MIT).
- Where can I find alternatives to ChainForge or promptfoo?
- GraphCanon lists graph-backed alternatives at ChainForge alternatives and promptfoo alternatives (ChainForge markdown twin, promptfoo markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, ChainForge or promptfoo?
- ChainForge: Steady. promptfoo: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for ChainForge and promptfoo?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: ChainForge trust report; promptfoo trust report.