Startup · United States
Antioch
HQ New YorkFounded 202511-50 employeesUpdated
High-fidelity simulation for Physical AI, at cloud scale.
Funding3 rounds · $40.5M
- Equity raised
- $40.5M
- Latest
- $32.0MSeries A · Sep 8, 2026
- Last valuation
- $60.0M?Basis not stated · Seed · Apr 16, 2026
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Sep 8, 2026 | Series A | $32.0M | — | Greylock | A*, BoxGroup, Category Ventures | Reported |
| Apr 16, 2026 | Seed | $8.5M | $60.0M? | A*, Category Ventures | BoxGroup, MaC Venture Capital | Reported |
| 2025 | Pre-Seed | Undisclosed | — | A* | — | Reported |
- $32.0MSep 8, 2026
- $8.5MApr 16, 2026
- Pre-SeedLed by A*Undisclosed2025
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems1
- Antioch AgentAntioch Agent is a tool that controls simulations, designs scenarios, and iterates on autonomy stacks.
Newest unveiled first. Systems that belong to a government program link to the program page, where variants, costs and contracts are.
People2
| Person | Role |
|---|---|
| Alex Langshur · LinkedIn ↗ | Co-Founder |
| Harry Mellsop | Co-Founder |
Sources10
Profile3
- 1
PitchBook · Supports Organization · employee range, Organization · founded year, Organization · linkedin url
“employee_range: 11-50 (profile: 12)”
- 2
Sixth-Domain · Supports Organization · country, Organization · kind
“{"country": "USA", "hq_iso2": "US", "id": "a7b0b1cf-c30f-4ee4-9814-8f310ff57152"}”
- 3
LinkedIn · Supports Organization · employee range, Organization · founded year, Organization · hq city, Organization · linkedin url
“employee_range: 11-50 (profile: 11-50 employees)”
Systems1
- 4CompanyAntioch
Antioch · Supports Organization · description, Organization · name, Organization · website, System
“High-fidelity simulation for Physical AI, at cloud scale. Join teams using Antioch to ship autonomous systems with confidence, entirely in simulation.”
Funding5
- 5
The Next Web · Sep 8, 2026 · Supports Funding round · amount, Organization · ownership
“has raised a $32m Series A. Greylock led the round.”
- 6
TechCrunch · Apr 16, 2026 · Supports Funding round · amount, Funding round · post money valuation usd
“has raised an $8.5 million seed round that values it at $60 million”
- 7
Crunchbase · Supports Funding round
“Pre Seed Round - Antioch”
- 8
The Robot Report · Supports Funding round
“The startup has raised pre-seed funding from investors including Shyam Sankar”
- 9
The SaaS News · Supports Funding round
“The round was led by Greylock”
People1
- 10
Crunchbase · Supports Organization · hq city, Organization · linkedin url, Organization · x url, Role
“hq_city: New York”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.