# Jay Gambetta (slim)

> Jay Gambetta is director of IBM Research. Granite 4.2 3B, Granite Guardian and Granite Switch 4.1 on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/jay-gambetta/index.md (~1,350 tokens) · this version ~1,030 tokens · JSON https://www.anchorterminal.com/people/jay-gambetta/index.json · canonical https://www.anchorterminal.com/people/jay-gambetta/
- 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)

Director of IBM Research.

Jay Gambetta is IBM's Director of Research and an IBM Fellow, leading the lab whose work spans AI, semiconductors and quantum computing.

## What Jay builds

- [Granite 4.2 3B](https://www.anchorterminal.com/tools/granite-4-2-3b.md), graded C, 59.8/100, in Open-weight models. Granite 4.2 3B is IBM's open-weight dense reasoning model of 3.7B parameters, post-trained from Granite 4.1 3B Base, with switchable thinking, tool calling and a 131,072-token context, published in BF16, FP8, FP4, GGUF and MLX under Apache 2.0. Director of IBM Research, researched 2026-10-28.
- [Granite Guardian](https://www.anchorterminal.com/tools/granite-guardian.md), graded C, 60.1/100, in Guardrails & safety filters. Granite Guardian is IBM's family of open-weight judge models. The current 8-billion-parameter release answers yes or no on whether a prompt, response, retrieved context or function call meets a built-in or custom criterion, and the owner runs it. Director of IBM Research, researched 2026-10-28.
- [Granite Switch 4.1](https://www.anchorterminal.com/tools/granite-switch.md), graded C, 59.5/100, in Decision models. Granite Switch 4.1 is IBM's open-weight 8B and 30B Granite 4.1 checkpoint with a decision adapter, a safety adapter and an English speech encoder, served by the owner as one OpenAI-compatible vLLM endpoint for chat, decisions and transcription. Director of IBM Research, researched 2026-10-28.

## Works with

- [Arvind Krishna](https://www.anchorterminal.com/people/arvind-krishna/), Chairman, President and Chief Executive Officer
- [Charles Ranlett Flint](https://www.anchorterminal.com/people/charles-ranlett-flint/), Co-founder, IBM (as Computing-Tabulating-Recording Company)
- [George Winthrop Fairchild](https://www.anchorterminal.com/people/george-winthrop-fairchild/), Co-founder, IBM (as Computing-Tabulating-Recording Company)
- [Herman Hollerith](https://www.anchorterminal.com/people/herman-hollerith/), Co-founder, IBM (as Computing-Tabulating-Recording Company)
- [Inkit Padhi](https://www.anchorterminal.com/people/inkit-padhi/), First author, Granite Guardian paper (IBM Research)
- [Parul Awasthy](https://www.anchorterminal.com/people/parul-awasthy/), First author, Granite Embedding R2 Models

## Questions

### Who is Jay Gambetta?

Jay Gambetta is IBM's Director of Research and an IBM Fellow, leading the lab whose work spans AI, semiconductors and quantum computing.

### What does IBM make?

Anchor Terminal lists Granite 4.2 3B, Granite Guardian and Granite Switch 4.1 from IBM.

### How are Jay's tools graded?

Granite 4.2 3B is graded C, 59.8 out of 100; Granite Guardian is graded C, 60.1 out of 100; Granite Switch 4.1 is graded C, 59.5 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://huggingface.co/ibm-granite/granite-4.2-3b
- https://huggingface.co/ibm-granite/granite-4.2-3b/discussions
- https://en.wikipedia.org/wiki/IBM
- https://en.wikipedia.org/wiki/Charles_Ranlett_Flint
- https://en.wikipedia.org/wiki/Herman_Hollerith
- https://en.wikipedia.org/wiki/George_W._Fairchild
- https://www.ibm.com/granite
- https://www.ibm.com/us-en
- https://www.ibm.com/granite/docs/models/guardian
- https://raw.githubusercontent.com/ibm-granite/granite-guardian/main/README.md
- https://huggingface.co/ibm-granite/granite-guardian-4.1-8b/discussions
- https://huggingface.co/ibm-granite/granite-switch-4.1-8b
- https://raw.githubusercontent.com/generative-computing/granite-switch/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.