# Ioannis Antonoglou (slim)

> Ioannis Antonoglou is co-founder of Reflection AI. Beam 1.0 and Mirror CLI on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/ioannis-antonoglou/index.md (~1,100 tokens) · this version ~830 tokens · JSON https://www.anchorterminal.com/people/ioannis-antonoglou/index.json · canonical https://www.anchorterminal.com/people/ioannis-antonoglou/
- 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)

Co-founder, Reflection AI.

Ioannis Antonoglou co-founded Reflection AI in 2024 with Misha Laskin, after both worked as researchers at Google DeepMind.

## What Ioannis builds

- [Beam 1.0](https://www.anchorterminal.com/tools/reflection-beam.md), graded D, 53.4/100, in Model APIs & inference. Beam 1.0 is Reflection's open-weight text model for coding, reasoning and agentic work, with 501B total and 23B active parameters and a 1M-token context, served by the Reflection API in public beta and released as Apache-2.0 weights. Co-founder, Reflection AI, researched 2026-10-28.
- [Mirror CLI](https://www.anchorterminal.com/tools/reflection-mirror.md), graded C, 54.4/100, in Agent harnesses. Mirror CLI is Reflection's open-source coding agent for the terminal, in early beta. It reads code, edits files and runs commands, with parallel agents in separate worktrees, MCP connections and Python extensions, using Beam by default or another provider. Co-founder, Reflection AI, researched 2026-10-28.

## Works with

- [Misha Laskin](https://www.anchorterminal.com/people/misha-laskin/), Co-founder, Reflection AI

## Backed by

- [B Capital Group](https://www.anchorterminal.com/investors/b-capital-group/)
- [Citigroup](https://www.anchorterminal.com/investors/citigroup/)
- [CRV](https://www.anchorterminal.com/investors/crv/)
- [Disruptive](https://www.anchorterminal.com/investors/disruptive/)
- [DST Global](https://www.anchorterminal.com/investors/dst-global/)
- [Eric Schmidt](https://www.anchorterminal.com/investors/eric-schmidt/)
- [Zoom](https://www.anchorterminal.com/investors/zoom/)
- [Lightspeed Venture Partners](https://www.anchorterminal.com/investors/lightspeed-venture-partners/)
- [NVIDIA](https://www.anchorterminal.com/investors/nvidia/)
- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)
- [1789 Capital](https://www.anchorterminal.com/investors/1789-capital/)

## Questions

### Who is Ioannis Antonoglou?

Ioannis Antonoglou co-founded Reflection AI in 2024 with Misha Laskin, after both worked as researchers at Google DeepMind.

### What does Reflection make?

Anchor Terminal lists Beam 1.0 and Mirror CLI from Reflection.

### Who has invested in Reflection?

The sources our research read name B Capital Group, Citigroup, CRV, Disruptive, DST Global, Eric Schmidt, Zoom, Lightspeed Venture Partners, NVIDIA, Sequoia Capital and 1789 Capital.

### How are Ioannis's tools graded?

Beam 1.0 is graded D, 53.4 out of 100; Mirror CLI is graded C, 54.4 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://reflection.ai/
- https://reflection.ai/contact
- https://en.wikipedia.org/wiki/Reflection_AI
- https://developers.reflection.ai/introduction

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.