Comparison
promptfoo vs GPTFuzz
Verdict
Pick promptfoo if promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support; pick GPTFuzz if gPTFuzz leverages auto-generated jailbreak prompts to red team large language models for testing and evaluation.
Markdown twin · promptfoo alternatives · GPTFuzz alternatives
GraphCanon updated 2w
vs
Trust & integrity
| Signal | promptfoo | GPTFuzz |
|---|---|---|
| Maintenance | Very active (0d since push) As of 2w · github_public_v1 | Slowing (158d since push) As of 2w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 2w · github_public_v1 | Not a fork · Personal 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
- promptfoo
- Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming.
- GPTFuzz
- Red Teaming Large Language Models with Auto-Generated Jailbreak Prompts
Stars
- promptfoo
- 24k
- GPTFuzz
- 604
Forks
- promptfoo
- 2.1k
- GPTFuzz
- 87
Open issues
- promptfoo
- 481
- GPTFuzz
- 17
Language
- promptfoo
- TypeScript
- GPTFuzz
- Python
Adopt for
- promptfoo
- promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support.
- GPTFuzz
- GPTFuzz leverages auto-generated jailbreak prompts to red team large language models for testing and evaluation.
Persona
- promptfoo
- -
- GPTFuzz
- -
Runtime
- promptfoo
- -
- GPTFuzz
- -
License
- promptfoo
- MIT
- GPTFuzz
- MIT
Last pushed
- promptfoo
- Aug 1, 2026
- GPTFuzz
- Feb 27, 2026
Categories
- promptfoo
- Evaluation & Observability, LLM Frameworks
- GPTFuzz
- Evaluation & Observability, LLM Frameworks
Trust and health
Maintenance
- promptfoo
- Very active (96%)
- GPTFuzz
- Slowing (36%)
Days since push
- promptfoo
- 0d
- GPTFuzz
- 158d
Open issues (now)
- promptfoo
- 481
- GPTFuzz
- 17
Owner type
- promptfoo
- Organization
- GPTFuzz
- User
Full report
- promptfoo
- Trust report
- GPTFuzz
- Trust report
Choose promptfoo if…
- promptfoo is primarily TypeScript; GPTFuzz is Python.
- Tags unique to promptfoo: ci-cd, evaluation-framework, llm-evaluation, pentesting.
- promptfoo ships Docker support for self-hosted deployment.
- For comparing performance across GPT, Claude, Gemini, DeepSeek
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
Choose GPTFuzz if…
- GPTFuzz is primarily Python; promptfoo is TypeScript.
- Tags unique to GPTFuzz: jailbreak prompts, large language models.
- When you need to test the robustness of LLMs against potential manipulative input designed to bypass content controls.
When NOT to use GPTFuzz
- If your project requires straightforward, uncontroversial testing tools that do not engage with sensitive content control evasion techniques.
- For general-purpose debugging and optimization tasks where red teaming tactics are not necessary or appropriate.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- 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 (sherdencooper/GPTFuzz) · observed Aug 5, 2026
- GitHub forks (sherdencooper/GPTFuzz) · observed Aug 5, 2026
- Last push (sherdencooper/GPTFuzz) · observed Feb 27, 2026
- License file (MIT) · observed Aug 5, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: promptfoo 24k · GPTFuzz 604 (synced Aug 2, 2026).
Common questions
- What is the difference between promptfoo and GPTFuzz?
- promptfoo: Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming.. GPTFuzz: Red Teaming Large Language Models with Auto-Generated Jailbreak Prompts. See the comparison table for live GitHub stats and shared categories.
- When should I choose promptfoo over GPTFuzz?
- Choose promptfoo over GPTFuzz when promptfoo is primarily TypeScript; GPTFuzz is Python; Tags unique to promptfoo: ci-cd, evaluation-framework, llm-evaluation, pentesting; promptfoo ships Docker support for self-hosted deployment; For comparing performance across GPT, Claude, Gemini, DeepSeek.
- When should I choose GPTFuzz over promptfoo?
- Choose GPTFuzz over promptfoo when GPTFuzz is primarily Python; promptfoo is TypeScript; Tags unique to GPTFuzz: jailbreak prompts, large language models; When you need to test the robustness of LLMs against potential manipulative input designed to bypass content controls.
- 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
- When should I avoid GPTFuzz?
- If your project requires straightforward, uncontroversial testing tools that do not engage with sensitive content control evasion techniques. For general-purpose debugging and optimization tasks where red teaming tactics are not necessary or appropriate.
- Is promptfoo or GPTFuzz more popular on GitHub?
- promptfoo has more GitHub stars (23,838 vs 604). Stars measure visibility, not whether either tool fits your constraints.
- Are promptfoo and GPTFuzz open source?
- Yes - both are open-source projects on GitHub (promptfoo: MIT, GPTFuzz: MIT).
- Where can I find alternatives to promptfoo or GPTFuzz?
- GraphCanon lists graph-backed alternatives at promptfoo alternatives and GPTFuzz alternatives (promptfoo markdown twin, GPTFuzz 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, promptfoo or GPTFuzz?
- promptfoo: Very active. GPTFuzz: Slowing. 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 promptfoo and GPTFuzz?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: promptfoo trust report; GPTFuzz trust report.