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RedCheck 🔍

Lightweight evaluation engine for LLM outputs and hallucination detection.


💾 Installation

pip install redcheck

⚡ Quickstart

1. Local Evaluation (Offline & Free)

*No API keys required/Users/nikki/redcheck RedCheck evaluates text directly on your machine.

from redcheck import RedCheck

evaluator = RedCheck()

context = "The product was released in 2024 and includes free support."
response = "The product was released in 1990 without support."

result = evaluator.evaluate_hallucination(context=context, response=response)

print(f"Status: {result['status']}")
print(f"Reason: {result['reason']}")

2. Using Cloud LLMs (Optional)

If you want to leverage external models like OpenAI or Anthropic for complex semantic reasoning, simply pass your API key:

from redcheck import RedCheck

evaluator = RedCheck(provider="openai", api_key="your-openai-api-key")

result = evaluator.evaluate_hallucination(
    context="Python 3.12 introduces improved error messages.",
    response="Python 3.12 has worse error messages."
)

print(result)

Note: If your Cloud API key runs out of quota (Error 429), RedCheck automatically switches to the Smart Local Engine to prevent pipeline crashes.


⚙️ How the Local Engine Works

RedCheck's local engine uses a multi-stage validation rule set:

Feature Description Example
Numeric & Date Check Extracts and verifies numbers/years between context and response. 2020 vs 2024FAIL
Polarity & Negation Scans for polarity flippers (not, never, no, without). "is active" vs "is not active"FAIL
Text Similarity Computes baseline lexical alignment. Low overlap ➔ FAIL

🛣️ Roadmap & SaaS Version

We are actively developing RedCheck SaaS Premium:

  • 📊 Real-time Dashboard: Monitor hallucinations, latency, and token costs.
  • 🗝️ Centralized Key & Token Management: Manage usage across teams.
  • 📈 Historical Metrics & Analytics: Track model performance over time.

📄 License

RedCheck is open-source software licensed under the MIT License.

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