Reflection AI's website preview

Well Run profileThe Well Run 100 · #42 of 720

Position 42

Reflection AI

US open-weight frontier AI lab building models for coding, reasoning and enterprise agents

Pace
3:30/kmSprint5.5
Distance
Distance Unproven.
Open ops roles
4
Last week
#35
Move
▼ 7
Peak
#35
Weeks in the 100
2
The Chart →
Rank and score over time
Board rank
#25#38#50#35Oct 18#40Oct 25
Pace score
02465.5Oct 185.5Oct 25

One point per Sunday re-rank, tracking since Oct 18. The lines fill in week by week.

Sprint 3:30/kmOpenAIReflection AIMistral AI
Race 4:05/km
Steady 5:20/km
Warm-up 6:00/km
Cool-down 6:30/km
Reflection AI runs in the Sprint lane, alongside 2 rivals. Rivals on Well Run sit in their own pace lanes; further right = more momentum. Tap one to open its page.Also competes with: DeepSeek, Meta Llama
Total raised
~$4.6Bsee rounds ↓
Headcount
~290as of 2026 platform.tracxn.com ↗
Founded
2024
HQ
Brooklyn, NY

Leadership

The problem

Enterprises and governments want powerful AI models they can control and run themselves, not only closed APIs

What they do

US open-weight frontier AI lab building models for coding, reasoning and enterprise agents

Traction No disclosed revenue; $7B+ compute deals (SpaceX, Nebius); first model only just launched

Hiring trend

Open roles
45
Ops roles
4
Headcount
~230

Headcount ~60 (Oct 2025) → ~230 (Jul 2026, est.); 47 open roles

Hiring in

  • San Francisco
  • New York
  • London

Funding

Last round
~$2.5B
Stage
Series C
Date
Apr 2026

Led by Nvidia (led $2B Series B, Oct 2025); Sequoia, Lightspeed

Distance

Unproven

Priced on team and thesis; first model just unveiled with unverified benchmarks against Meta, OpenAI gpt-oss and Chinese open labs. Nvidia acquisition talks reported Oct 2026.

Sources: Quartz/Yahoo: Reflection launches Beam (Oct 2026) ↗ · Tech Startups: Nvidia in talks to acquire Reflection AI (Oct 2026) ↗

Last checked Oct 25, 2026

News timeline

  1. Oct 2026Unveils Beam, its first open-weight model (501B-parameter MoE) datacamp.com ↗
  2. Apr 2026Closes $2.5B Series C at $25B pre-money valuation multiples.vc ↗
  3. Mar 2026In talks to raise $2.5B at $25B; JPMorgan weighing participation (WSJ) reuters.com ↗
  4. Oct 2025Raises $2B at $8B with Nvidia to build US open frontier lab techcrunch.com ↗

Funding historyTotal raised ~$4.6B

  1. Apr 2026Series C$2.5Bat $25B pre-money (~$27.5B post)multiples.vc ↗
  2. Oct 2025Series B$2Bat $8Btechcrunch.com ↗
  3. Mar 2025Series A$130Mat $545Mwsau.com ↗

Profile facts checked Oct 19, 2026. Every fact links to its public source.

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