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@0xm00n 0xm00n commented Nov 5, 2025

Description

This PR adds support for the Anthropic model-written-evals dataset to PyRIT. The model-written-evals dataset contains 154 evaluation datasets designed to test LLM behaviors across 4 main categories: persona traits, sycophancy, advanced AI risks, and gender bias. The evaluations use language models to automatically generate test cases across multiple behavioral dimensions.

Dataset: https://github.com/anthropics/evals

Associated Paper: https://arxiv.org/abs/2212.09251

Work Completed

  • Implemented the fetch_anthropic_evals_dataset() function in anthropic_evals_dataset.py
  • Added unit tests in test_anthropic_evals_dataset.py (12 test cases)
  • Added integration test in test_fetch_datasets.py
  • Updated API documentation in api.rst
  • Registered function in pyrit/datasets/__init__.py

Related Issue

Contributes to issue #450

0xm00n and others added 5 commits November 2, 2025 20:10
[pull] main from Azure:main
  - Implement fetch_sorry_bench_dataset() for sorry-bench/sorry-bench-202503 on Hugging Face
  - Support filtering by 44 categories and 21 prompt style linguistic mutations
  - Default to base prompts only
  - Add unit tests (10 tests)
  - Add integration test
  - Update API documentation
…dation

  - Change prompt_styles (list) to prompt_style (string) for simpler API
  - Add input validation for categories and prompt_style
  - Add VALID_CATEGORIES and VALID_PROMPT_STYLES for input validation
  - Fix exception handling to preserve stack traces
  - Update tests to match new API (12 tests, all passing)
  Implements support for Anthropic's model-written-evals dataset with 154 evaluation datasets across 4 categories.

  Changes:
  - Add fetch_anthropic_evals_dataset() function with category filtering
  - Support for persona, sycophancy, advanced-ai-risk, and winogenerated categories
  - Fetches directly from GitHub repository using API for file discovery
  - Add unit tests (12 tests)
  - Add integration test
  - Update API docs
@hannahwestra25
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Thanks for adding these! made a few stylistic suggestions!

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@romanlutz romanlutz left a comment

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Nice work! Looking forward to having this dataset fetcher in PyRIT 🙂

Comment on lines +27 to +30
- persona: 119 datasets testing personality traits, beliefs, and potentially dangerous goals
- advanced-ai-risk: 32 datasets (16 human + 16 LM-generated) testing AI safety concerns
- sycophancy: 3 datasets testing whether models repeat back user views
- winogenerated: 2 datasets testing gender bias in occupations
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only the persona and sycophancy ones come through if you run this.

The winogenerated ones don't have a "question", but a "sentence_with_blank" that needs to have the blank replaced with the values. So those will map to multiple prompts each.

I'm not sure why the advanced-ai-risk ones got filtered (yet) but you may want to investigate why they're getting filtered.

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i think i've fixed all of the issues and added tests (which all passed). however, when loading up the dataset categories, I see this for the winogenerated category:

Skipping item with empty prompt in winogenerated_occupations.jsonl
Skipping item with empty prompt in winogenerated_occupations.jsonl
Skipping item with empty prompt in winogenerated_occupations.jsonl
Skipping item with empty prompt in winogenerated_occupations.jsonl
Skipping item with empty prompt in winogenerated_occupations.jsonl
Skipping item with empty prompt in winogenerated_occupations.jsonl
Loaded 2990 winogenerated prompts
First prompt: The precision instrument repairer charged the client $30 an hour for _ services

This is running the following below:

from pyrit.datasets import fetch_anthropic_evals_dataset

dataset = fetch_anthropic_evals_dataset(category='winogenerated')
print(f'Loaded {len(dataset.prompts)} winogenerated prompts')
print(f'First prompt: {dataset.prompts[0].value}')

not entirely sure if theres anything wrong though (seems it loads all of the 2990). let me know your thoughts.

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Will rerun tomorrow

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@AdrGav941 upon further inspection of this dataset I wonder if this is better suited for Q&A?

https://github.com/anthropics/evals

Everything appears to be Q&A. In some files the parsing would be easier than in others, though. The winogenerated one has pronoun options which would be the answer options. But in some others it's just in the text itself...

Any thoughts?

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@romanlutz this dataset does seem to lend itself well to the QA structure we have. Especially for winogenerated. Like you said, in winogenerated it looks to need minimal transformation to work with QA. The others would need some parsing but all look to have "choices" baked into the items themselves.

I agree that this would be a great candidate to make into QA prompts.

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@0xm00n 0xm00n Nov 15, 2025

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@romanlutz @AdrGav941 how would making it into QA prompts change the code structure now?

@romanlutz romanlutz self-requested a review November 13, 2025 20:45
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@0xm00n btw I just saw Anthropic drop a new dataset: https://www.anthropic.com/news/political-even-handedness

Any chance you're interested in contributing a similar fetcher for it as well? It has two prompts per row so it would require a tiny bit of custom handling, but otherwise (more?) straightforward than this one.

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0xm00n commented Nov 15, 2025

@0xm00n btw I just saw Anthropic drop a new dataset: https://www.anthropic.com/news/political-even-handedness

Any chance you're interested in contributing a similar fetcher for it as well? It has two prompts per row so it would require a tiny bit of custom handling, but otherwise (more?) straightforward than this one.

Yup, seems pretty easy. will work on it soon

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4 participants