ProofHound
ProofHound: Open-source prompt versioning, testing, experimentation, and release control for classification teams. Ranked #6 of 26 in Prompt Management Software by our editors (8.9/10); pricing: Free plan; best for open-source prompt experimentation and releases.
At a glance
- Editor score8.9 / 10
- PricingFree plan
- Best forOpen-source prompt experimentation and releases
- Free planYes
- Prompt versioningYes
- Facts checked20 Sep 2026
Where it wins
- Self-hosted deployment with full core capabilities and private data storage
- Regression metrics include accuracy, precision, recall, F1, and per-class results
- Supports batch experiments, canary releases, A/B testing, and rollbacks
Where it doesn't
- The Free plan is limited to 3 projects and 1 member
- Free organizations get 3 concurrent LLM calls and 5GB retained storage
- Hosted Pro is advertised as coming soon rather than currently available
Our verdict on ProofHound
ProofHound is an open-source and hosted platform for managing prompts used in LLM classification workflows. It is designed for developers and operational teams handling risk control, financial review, content moderation, customer-service intent recognition, and similar tasks. The product combines immutable prompt version records, version comparison, dataset regression testing, experiments, automated optimization, deployment workflows, monitoring, and rollback. Teams can access it through the web, HTTP API, MCP, or self-hosted deployment.
Its strongest area is the depth of the prompt evaluation and release workflow. Dataset regression testing covers accuracy, precision, recall, F1, and per-class metrics, while batch experiments can compare prompt versions, datasets, and models. ProofHound also includes automated error analysis, prompt rewriting, iterative optimization, manual labeling, and annotation collaboration. For production operations, canary, A/B, release, and rollback workflows connect experimentation with controlled deployment. Online invocation, experiment data logging, webhooks, queue connectors, HTTP API access, and MCP support extend the product beyond a prompt repository.
The plan structure gives smaller teams two no-cost paths. Self-hosted open source is free forever and includes private deployment, full core capabilities, custom model integration, private data storage, and community support. The hosted Free plan is billed at no cost per organization and includes 3 projects, 1 member, 3 concurrent LLM calls, 5GB of retained project storage, and 200MB per dataset upload. Pro adds unlimited projects and members under a shared organization quota, 50 concurrent LLM calls, a 7-day workflow runtime, 50GB of retained project storage, full RBAC, and integration channels; it is advertised as coming soon. ProofHound fits teams that need measurable prompt iteration and controlled releases, while simpler prompt storage needs may not require its broader workflow.
Your product? Our editors can test ProofHound in depth and publish a review, labelled as paid · from $149/mo →
ProofHound pricing
All 3 ProofHound plans and prices →
ProofHound fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Prompt versioning | Yes |
| Prompt testing | Yes |
| Prompt templates | Yes |
| Approval workflows | Not verified |
| Access controls | Yes |
| API or SDK access | Yes |
| Model provider support | Multi-provider |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 13 integrations: OpenAI, Azure OpenAI, Anthropic, DeepSeek, Kimi, MiniMax … |
| Pricing | Free plan (source) |
| Website | proofhound.org |
| Facts checked | 20 Sep 2026 |
ProofHound integrations
ProofHound lists 13 integrations on its own site.
- OpenAI
- Azure OpenAI
- Anthropic
- DeepSeek
- Kimi
- MiniMax
- Qwen
- ERNIE
- OpenAI-compatible endpoints
- HTTP API
- MCP
- webhooks
- connectors
Alternatives to ProofHound
- PromptHubA full prompt-operations workspace for teams managing versions, testing, approvals, and APIs.9.4
- AgentaA flexible prompt operations workspace with open-source and hosted deployment options.9.3
- LangfuseA broad LLM operations platform for tracing, prompt evaluation, experiments, and cost tracking.9.2
See all ProofHound alternatives →
ProofHound vs the competition
- ProofHound vs PromptHub
- ProofHound vs Agenta
- ProofHound vs Langfuse
- ProofHound vs PromptLayer
- ProofHound vs Prompt Assay
- ProofHound vs PromptMetrics
Compare ProofHound with any tool side by side →
Also Ranked In
ProofHound is ranked in 5 of our directories.
Used ProofHound? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used ProofHound for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
ProofHound is listed in our Prompt Management Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/proofhound/"><img src="https://www.itechguides.com/best/badge/proofhound.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update