# Lei Bai (slim)

> Lei Bai is project co-lead, Agents-A1 at Shanghai AI Laboratory. Agents-A1-4B on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/lei-bai/index.md (~700 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/people/lei-bai/index.json · canonical https://www.anchorterminal.com/people/lei-bai/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Project co-lead, Agents-A1, Shanghai AI Laboratory.

## What Lei builds

- [Agents-A1-4B](https://www.anchorterminal.com/tools/agents-a1-4b.md), graded C, 61/100, in Open-weight models. Agents-A1-4B is InternScience's open-weight dense vision-language model for long-horizon agent work (search, research, instruction following and tool calling), about 4.5B parameters in the Qwen3.5 architecture with a 262,144-token context, published in BF16, FP8 and GGUF under Apache 2.0. Project co-lead, Agents-A1, Shanghai AI Laboratory, researched 2026-10-28.

## Works with

- [Bo Zhang](https://www.anchorterminal.com/people/bo-zhang/), Project co-lead, Agents-A1, Shanghai AI Laboratory

## Questions

### Who is Lei Bai?

Lei Bai is project co-lead, Agents-A1 at Shanghai AI Laboratory.

### What does InternScience (Shanghai AI Laboratory) make?

Anchor Terminal lists Agents-A1-4B from InternScience (Shanghai AI Laboratory).

### How are Lei's tools graded?

Agents-A1-4B is graded C, 61 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://internscience.github.io/Agents-A1/
- https://huggingface.co/InternScience/Agents-A1-4B
- https://arxiv.org/abs/2606.30616
- https://raw.githubusercontent.com/InternScience/Agents-A1/main/README.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.