Automated Prompt Optimizationfor LLM Classification Tasks
Stop manually debugging prompts round by round. Upload your labeled dataset, set your target metrics, and let ProofHound automatically analyze error cases, iterate prompts, run validations, and manage full lifecycle deployment and rollback.
The Flaws of Traditional Prompt Tuning
LLM classification, content moderation and risk control tasks rely heavily on manual prompt iteration. Engineers spend most of their time checking error samples, rewriting prompts, and validating results, while core strategic judgment only takes a tiny part. The process is labor-intensive, undocumented and hard to iterate efficiently.
Slow manual iteration
Prompt optimization requires multiple rounds of testing and adjustment. Manual result checking and comparison slow down iteration cycles and fail to adapt to dynamic business data changes.
Wasted human workforce
Error analysis, prompt rewriting, result verification and version comparison are standardized workflows that should be automated, yet consume valuable engineering and operations resources.
No traceability
Manual tuning leaves no complete record of version changes, metric shifts and invalid attempts. Every new iteration starts from scratch, causing repeated trial and error.
One-click automated prompt optimization loop
No complex configuration required. Upload labeled data and define optimization goals. ProofHound analyzes failure cases, iterates prompts, runs batch experiments, and delivers the best-performing prompt version with complete metrics and iteration logs.
Avoid misleading average scores. Lift recall for high-risk categories or hold precision for classes that over-flag, without burying business risk under aggregate accuracy.
Upload a labeled dataset
Support CSV, TSV, JSONL, JSON array and ZIP files. Flexible field mapping in the UI means no fixed template adaptation.
Set custom optimization targets
Optimize overall accuracy or fine-tune category-specific metrics: boost recall for high-risk categories and stabilize precision for error-prone classes.
You get the best-in-class prompt version, granular category metrics, and full iteration traceability for every optimization round.
One platform for full prompt lifecycle management
Unify asset management, automated optimization, experimental verification, manual labeling, gray deployment and online monitoring to cover the entire prompt iteration and production workflow.
Unified asset management
Centrally manage models, datasets, prompts and connectors to avoid scattered asset chaos.
Traceable prompt versions
Immutable version records with logs of variable configs, output rules and version differences for team collaboration audit.
Flexible dataset management
Support multi-format data import, visual field mapping, sample browsing, experimental testing and result export.
Multi-end integration
Connect via Web UI, Webhook, API Token and MCP for business systems and AI Agents.
Fully automated iteration
Automate error analysis, prompt rewriting, batch testing and version screening without manual intervention.
Full-cycle data logging
Record all experiment, optimization, deployment and invocation data for complete audit and review.
Manual labeling collaboration
Store manual labeling data separately for comparison with model outputs and targeted optimization.
Production-grade deployment
Standardize gray release, A/B testing, full launch and emergency rollback for safe prompt production.
Intelligent iteration mechanism for continuous prompt improvement
Iterate based on real experimental feedback. ProofHound automatically analyzes errors, rewrites prompts and runs comparative tests. Only better-performing versions are reserved as new baselines to eliminate invalid trials.
Precise error localization — identify failure samples and confusing categories to locate prompt defects
Valid signal refinement — integrate effective optimization clues, filter conflicting noise, and rewrite prompts for core problems
Smart trial avoidance — record invalid optimization directions automatically to prevent repetitive futile attempts
Best version protection — update baseline versions only when metrics improve to keep iteration stable
Full experimental audit trail, every change is evidence-based
The platform permanently records all experimental data: prompt versions, datasets, model configurations, sample judgments and overall/category metrics. All iterations are fully traceable, reproducible and comparable, replacing experience-based manual tuning with data-driven decisions.
Built for enterprise LLM classification workloads
Your dedicated prompt engineering platform for data-driven classification optimization
ProofHound is a one-stop prompt iteration workspace for critical classification flows such as risk control, financial judgment, content moderation and customer service intent recognition.
Key scenarios
Business value
Production-grade prompt deployment with full risk control
Deploy experimentally verified prompt versions with gray traffic release, A/B testing, full-scale rollout and one-click rollback. Eliminate instability and untraceable risks in traditional prompt production updates.
Version freeze
Gray traffic release
Parallel testing
Launch / rollback
Standard workflow: Version freeze -> gray traffic release -> old and new version parallel testing -> full launch / emergency rollback.
Product iteration roadmap
ProofHound focuses on LLM classification scenarios, especially imbalanced data and category-specific fine-tuning, and continuously iterates full lifecycle production capabilities.
Self-hosted stays free, Cloud starts with Free
Run the open-source edition yourself for full data control, or use the hosted Cloud plans when you want a managed workspace. The first hosted phase opens Free, with Pro in preparation.
Self-hosted open source
Private deployment
Free
Hosted cloud starter
Pro
Higher-capacity team plan
Pro checkout is not open yet. Leave an email and we will notify you when the paid plan is ready.
Open source & co-build
ProofHound is a fully open-source project supporting self-hosted deployment. Developers and enterprises are welcome to contribute and iterate together.
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