--- title: "ChainForge vs promptfoo" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/ianarawjo-chainforge-vs-promptfoo-promptfoo" tools: ["ianarawjo-chainforge", "promptfoo-promptfoo"] --- # ChainForge vs promptfoo *GraphCanon updated Aug 20, 2026* ## 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. [ChainForge](https://chainforge.ai/docs) reports 3.0k GitHub stars, 256 forks, and 70 open issues, last pushed Jun 10, 2026. [promptfoo](https://promptfoo.dev) has 24k stars, 2.1k forks, and 481 open issues, last pushed Aug 1, 2026. Figures are from public GitHub metadata via [ChainForge's repository](https://github.com/ianarawjo/ChainForge) and [promptfoo's repository](https://github.com/promptfoo/promptfoo). | | [ChainForge](/tools/ianarawjo-chainforge.md) | [promptfoo](/tools/promptfoo-promptfoo.md) | | --- | --- | --- | | Tagline | An open-source visual programming environment for battle-testing prompts to LLMs. | Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming. | | Stars | 3,027 | 23,838 | | Forks | 256 | 2,147 | | Open issues | 70 | 481 | | Language | TypeScript | TypeScript | | Adopt for | Web-based visual programming tool for prompt testing on LLMs; supports local installation and Docker for advanced feature access. | promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support. | | 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._ | | [ChainForge](/tools/ianarawjo-chainforge.md) | [promptfoo](/tools/promptfoo-promptfoo.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Very active (96%) | | Days since push | 70d | 0d | | Open issues (now) | 70 | 481 | | Stars delta | +14 (30d) | Unknown | | Open issues delta | +1 (30d) | Unknown | | Owner type | User | Organization | | Full report | [trust report](/tools/ianarawjo-chainforge/trust.md) | [trust report](/tools/promptfoo-promptfoo/trust.md) | ## Shared compatibility - **Python**: [ChainForge](/tools/ianarawjo-chainforge.md) - Python runtime; [promptfoo](/tools/promptfoo-promptfoo.md) - Python runtime ## Decision facts: ChainForge - **Adopt for:** Web-based visual programming tool for prompt testing on LLMs; supports local installation and Docker for advanced feature access. ## Decision facts: promptfoo - **Adopt for:** promptfoo aids in evaluating AI prompts, LLM agents, and RAG systems through declarative config testing with CI/CD support. ## Choose when ### Choose ChainForge if… - Tags unique to ChainForge: ai, evaluation, large language models, llmops. - Need extensive features beyond web limitations - Leaner open-issue backlog (70). ### 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 ChainForge - Looking for a solution without local setup or Docker support - Prefer not managing API keys via environment variable configuration ## 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 ## 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](/tools/ianarawjo-chainforge/alternatives) and [promptfoo alternatives](/tools/promptfoo-promptfoo/alternatives) ([ChainForge markdown twin](/tools/ianarawjo-chainforge/alternatives.md), [promptfoo markdown twin](/tools/promptfoo-promptfoo/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/ianarawjo-chainforge-vs-promptfoo-promptfoo.md) 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](/tools/ianarawjo-chainforge/trust); [promptfoo trust report](/tools/promptfoo-promptfoo/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=ianarawjo-chainforge`](/api/graphcanon/graph?tool=ianarawjo-chainforge) - 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/_