> ## Documentation Index
> Fetch the complete documentation index at: https://agents.nanonets.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Compare

> Compares two pieces of content and returns similarities, differences, and a verdict.

Compares two pieces of content and returns similarities, differences, and a verdict. Display name **"Compare"**. On by default for new agents.

Put **all** relevant facts in `prompt` (do not assume the model still has earlier messages). Convert extracted fields to citation form:

* `{"quantity": {"value": 2, "word_id_groups": [7]}}` → `Quantity: 2[cite:7]`
* Never write `word_id_groups=[7]` in the prompt.

## Authentication and enablement

No integration. Uses the agent's LLM. Default-on. Applied learning rules for this comparison are injected by the orchestrator.

## Inputs

* `prompt` (required): the comparison, including both sides and citation markers.

## Output

`{response, model, tokens_used}` — a text verdict. `response` is not a parsed object.

## Limits and side effects

* LLM call; no external writes.
* Not a substitute for `structured_data_extraction` (extract first, then compare).

## Expected errors

* Empty `prompt`.
* Provider failure.