# Wenjun Zeng

> Wenjun Zeng is lead author at ShieldGemma and ShieldGemma 2 technical reports. ShieldGemma on Anchor Terminal, with grades, an about and public profiles.

- Canonical: https://www.anchorterminal.com/people/wenjun-zeng/
- Markdown: https://www.anchorterminal.com/people/wenjun-zeng/index.md (~1,050 tokens)
- Slim: https://www.anchorterminal.com/people/wenjun-zeng/index.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/people/wenjun-zeng/index.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (the key docs and every listing in one file, at most 16 MB, about 4 million tokens: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- DNS: dig +short TXT <slug>.grade.anchorterminal.com (the grade as a DNS TXT record, for a sandbox with no HTTP where names still resolve; also top., best.<category>. and <a>.vs.<b>. under the zone, and the same under grade.letme.dev)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-11-06

Lead author, ShieldGemma and ShieldGemma 2 technical reports.

## What Wenjun builds

- [ShieldGemma](https://www.anchorterminal.com/tools/shieldgemma.md), graded C, 54/100, in Guardrails & safety filters. ShieldGemma is Google's family of open-weight safety classifiers built on Gemma. ShieldGemma 1 (2B, 9B, 27B) scores English text against hate, harassment, dangerous and sexual content policies, and ShieldGemma 2 (4B) scores images. The owner runs them. Lead author, ShieldGemma and ShieldGemma 2 technical reports, researched 2026-11-06.

## Works with

- [Brendan O’Donoghue](https://www.anchorterminal.com/people/brendan-o-donoghue/), Research Scientist; DiffusionGemma / Gemini Diffusion lead
- [Demis Hassabis](https://www.anchorterminal.com/people/demis-hassabis/), Co-founder and CEO, Google DeepMind
- [Gus Martins](https://www.anchorterminal.com/people/gus-martins/), Gemma Product Manager
- [Henrique Schechter Vera](https://www.anchorterminal.com/people/henrique-schechter-vera/), Lead author, EmbeddingGemma 2 technical report
- [Min Choi](https://www.anchorterminal.com/people/min-choi/), Product Manager; EmbeddingGemma launch
- [Mustafa Suleyman](https://www.anchorterminal.com/people/mustafa-suleyman/), Co-founder and former head of applied AI, DeepMind
- [Ryan Mullins](https://www.anchorterminal.com/people/ryan-mullins/), Author, ShieldGemma and ShieldGemma 2 technical reports
- [Sahil Dua](https://www.anchorterminal.com/people/sahil-dua/), Author, EmbeddingGemma 2 technical report
- [Sebastian Flennerhag](https://www.anchorterminal.com/people/sebastian-flennerhag/), Research Scientist; DiffusionGemma research lead
- [Shane Legg](https://www.anchorterminal.com/people/shane-legg/), Co-founder and Chief AGI Scientist, Google DeepMind

## Questions

### Who is Wenjun Zeng?

Wenjun Zeng is lead author at ShieldGemma and ShieldGemma 2 technical reports.

### What does Google DeepMind make?

Anchor Terminal lists ShieldGemma from Google DeepMind. ShieldGemma is Google's family of open-weight safety classifiers built on Gemma. ShieldGemma 1 (2B, 9B, 27B) scores English text against hate, harassment, dangerous and sexual content policies, and ShieldGemma 2 (4B) scores images. The owner runs them.

### How are Wenjun's tools graded?

ShieldGemma is graded C, 54 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://uk.linkedin.com/in/lgusmartins
- https://x.com/gusthema
- https://gemma.ai/
- https://x.com/Google
- https://deepmind.google/
- https://en.wikipedia.org/wiki/Google_DeepMind
- https://deepmind.google/about/
- https://en.wikipedia.org/wiki/Demis_Hassabis
- https://en.wikipedia.org/wiki/Shane_Legg
- https://en.wikipedia.org/wiki/Mustafa_Suleyman
- https://gemma.ai/models/shieldgemma/model-card-v1.md
- https://gemma.ai/models/shieldgemma/model-card-v2.md

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. If a page is about you, link your account from it to write the about and set the links yourself. For a photo, a correction or to have a page removed, write to privacy@anchorterminal.com.

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