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🌍 Worldwide🌱 Startups📡 Y Combinator🕒 Updated

Largest Companies in the Newest Y Combinator Batch (2026)

As of November 4, 2026, “Perit.AI” leads Largest Companies in the Newest Y Combinator Batch with 47 people. “Ignition Benefits” is second and “Invertix” third.

WhatsAppTelegramXFacebookⓘ Methodology
🚫 No paid placement📡 Source: Y Combinator🕒 Updated ⓘ How we measure

Full ranking

1
Perit.AI ↗ •🏆 Leader
Fall 2026 · Expert-collected voice, egocentric and RL training data for frontier…
47 peopleTeam size
2
Ignition Benefits ↗ •
Fall 2026 · The AI-Native Benefits Brokerage
12 peopleTeam size
3
Invertix ↗ •
Fall 2026 · AI that operates power plants
8 peopleTeam size
4
Theseus Robotics ↗ •
Fall 2026 · Humanoids to restock retail shelves & pick orders
7 peopleTeam size
5
Ascenix ↗ •
Fall 2026 · Custom software for senior care facilities.
7 peopleTeam size
6
Grep AI ↗ •
Fall 2026 · Self-improving agents that automate your growth bottlenecks
6 peopleTeam size
7
Voyager ↗ •
Fall 2026 · Open harness for video and other creative work.
6 peopleTeam size
8
The Letter Company ↗ •
Fall 2026 · The world's first coding agent, harness, & IDE for growth engineering.
6 peopleTeam size
9
Telamont ↗ •
Fall 2026 · Sentry for errors in construction documents
6 peopleTeam size
10
Ailit ↗ •
Fall 2026 · Electrifying North American freight rail with swappable batteries.
6 peopleTeam size

How this ranking works

Companies from the newest complete Y Combinator batch, ranked by team size. Dataset: yc-oss.

Methodology →

SourceY Combinator
SignalTeam size
Last updated
Top 10Newest full YC batch, by team size

Frequently asked questions

What is #1 in Largest Companies in the Newest Y Combinator Batch?

As of November 4, 2026, #1 is “Perit.AI”.

How is this ranking measured?

Companies from the newest complete Y Combinator batch, ranked by team size. Dataset: yc-oss.

How often is this chart updated?

Data is re-collected automatically and every page shows its last update date.

Can a brand pay to appear in this ranking?

No. There are no paid placements and no commercial influence on rank.

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