--- title: "promptfoo vs GPTFuzz" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/promptfoo-promptfoo-vs-sherdencooper-gptfuzz" tools: ["promptfoo-promptfoo", "sherdencooper-gptfuzz"] --- # promptfoo vs GPTFuzz *GraphCanon updated Aug 5, 2026* ## 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. [promptfoo](https://promptfoo.dev) reports 24k GitHub stars, 2.1k forks, and 481 open issues, last pushed Aug 1, 2026. [GPTFuzz](https://github.com/sherdencooper/GPTFuzz) has 604 stars, 87 forks, and 17 open issues, last pushed Feb 27, 2026. Figures are from public GitHub metadata via [promptfoo's repository](https://github.com/promptfoo/promptfoo) and [GPTFuzz's repository](https://github.com/sherdencooper/GPTFuzz). | | [promptfoo](/tools/promptfoo-promptfoo.md) | [GPTFuzz](/tools/sherdencooper-gptfuzz.md) | | --- | --- | --- | | Tagline | Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming. | Red Teaming Large Language Models with Auto-Generated Jailbreak Prompts | | Stars | 23,838 | 604 | | Forks | 2,147 | 87 | | Open issues | 481 | 17 | | Language | TypeScript | Python | | Adopt for | promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support. | GPTFuzz leverages auto-generated jailbreak prompts to red team large language models for testing and evaluation. | | Persona | - | - | | Runtime | - | - | | License | MIT | MIT | | Categories | Evaluation & Observability, LLM Frameworks | Evaluation & Observability, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [promptfoo](/tools/promptfoo-promptfoo.md) | [GPTFuzz](/tools/sherdencooper-gptfuzz.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Slowing (36%) | | Days since push | 0d | 158d | | Open issues (now) | 481 | 17 | | Owner type | Organization | User | | Full report | [trust report](/tools/promptfoo-promptfoo/trust.md) | [trust report](/tools/sherdencooper-gptfuzz/trust.md) | ## Decision facts: promptfoo - **Adopt for:** promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support. ## Decision facts: GPTFuzz - **Adopt for:** GPTFuzz leverages auto-generated jailbreak prompts to red team large language models for testing and evaluation. ## Choose when ### 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 ### 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 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 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. ## 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](/tools/promptfoo-promptfoo/alternatives) and [GPTFuzz alternatives](/tools/sherdencooper-gptfuzz/alternatives) ([promptfoo markdown twin](/tools/promptfoo-promptfoo/alternatives.md), [GPTFuzz markdown twin](/tools/sherdencooper-gptfuzz/alternatives.md)), 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](/compare/promptfoo-promptfoo-vs-sherdencooper-gptfuzz.md) 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](/tools/promptfoo-promptfoo/trust); [GPTFuzz trust report](/tools/sherdencooper-gptfuzz/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=promptfoo-promptfoo`](/api/graphcanon/graph?tool=promptfoo-promptfoo) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_