> ## Documentation Index
> Fetch the complete documentation index at: https://phidatainc.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Comparison Accuracy Evaluation

> Score an agent that must use CalculatorTools to answer whether 9.11 or 9.9 is bigger, with an o4-mini judge.

Demonstrates accuracy evaluation for numeric comparison tasks.

```python accuracy_9_11_bigger_or_9_99.py theme={null}
"""
Comparison Accuracy Evaluation
==============================

Demonstrates accuracy evaluation for numeric comparison tasks.
"""

from typing import Optional

from agno.agent import Agent
from agno.eval.accuracy import AccuracyEval, AccuracyResult
from agno.models.openai import OpenAIChat
from agno.tools.calculator import CalculatorTools

# ---------------------------------------------------------------------------
# Create Evaluation
# ---------------------------------------------------------------------------
evaluation = AccuracyEval(
    name="Comparison Evaluation",
    model=OpenAIChat(id="o4-mini"),
    agent=Agent(
        model=OpenAIChat(id="gpt-4o"),
        tools=[CalculatorTools()],
        instructions="You must use the calculator tools for comparisons.",
    ),
    input="9.11 and 9.9 -- which is bigger?",
    expected_output="9.9",
    additional_guidelines="Its ok for the output to include additional text or information relevant to the comparison.",
)

# ---------------------------------------------------------------------------
# Run Evaluation
# ---------------------------------------------------------------------------
if __name__ == "__main__":
    result: Optional[AccuracyResult] = evaluation.run(print_results=True)
    assert result is not None and result.avg_score >= 8
```

## Run the Example

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U agno openai
    ```
  </Step>

  <Step title="Export your OpenAI API key">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export OPENAI_API_KEY="your_openai_api_key_here"
      ```

      ```bash Windows theme={null}
      $Env:OPENAI_API_KEY="your_openai_api_key_here"
      ```
    </CodeGroup>
  </Step>

  <Step title="Run the example">
    Save the code above as `accuracy_9_11_bigger_or_9_99.py`, then run:

    ```bash theme={null}
    python accuracy_9_11_bigger_or_9_99.py
    ```
  </Step>
</Steps>

Full source: [cookbook/09\_evals/accuracy/accuracy\_9\_11\_bigger\_or\_9\_99.py](https://github.com/agno-agi/agno/blob/main/cookbook/09_evals/accuracy/accuracy_9_11_bigger_or_9_99.py)