Flow raises $50M Series B at a $750M valuation, co-led by Antonio Gracias (Valor) and Gavin Baker (Atreides).

Engineered for hardware teams.
That build at agent speed.

Requirements management and AI agents that continuously align CAD, simulation, code, and test. A living system of record for hardware development.

  • Rivian
  • Joby
  • Skydio

Trusted by tens of thousands of engineers across the fastest-moving engineering teams

  • Rivian
  • Joby
  • Skydio
  • Astranis
  • GMPPU
  • Stoke
  • Castelion
  • Rivian and Volkswagen Group Technologies
  • Isar Aerospace
  • Mytra
  • Pacific Fusion
  • Atomic Machines
  • Astrolab
  • OpenStar
  • Firestorm Labs
  • Rondo
  • Xona Space Systems
  • Exowatt
  • Gravitics
  • Xcimer Energy
  • Bright AI
  • Space Machines
  • Aalyria
  • Rhoda.AI
  • Heron Power

Engineering, without the drift.

  • A living systems graph for every engineer.

    Requirements, design, CAD, and testing connected as one system.

  • Zero cost of change.

    Propose a change and Flow instantly runs impact analysis across every dependency.

  • Agents work where engineers already do.

    Change a requirement, issue, CAD model, or test artifact and Flow propagates the update.

Testimonials

Trusted by the engineers building
the future of hardware.

Stoke
Ryan McCulloughSystem Architect
Flow is the requirements management tool of our dreams. It reflects how we work—fast, iterative, and focused on giving everyone a common, integrated view of our system.
Ryan McCullough portrait

Ryan McCullough

System Architect

Rivian
Scott MacKenzieDirector Product Development
Flow enables over 1,000 engineers to work efficiently, stay aligned, and maintain rigor, becoming integral to our teams' daily rhythm and making a significant impact.
Scott MacKenzie portrait

Scott MacKenzie

Director Product Development

01

Align every engineer on a single, living source of truth.

Every requirement, interface, design artifact, and test case is connected in a systems graph. Open any node and immediately see upstream dependencies and downstream impact.

Learn more
Requirements

Assign, review, and iterate requirements and key design parameters.

Rivian
Rivian designs the R1, R2, R3, and future programs in Flow, uniting 1,500 engineers across battery, drivetrain, controls, and body structures in a single live system of record.
See how Rivian builds with Flow
02

Your team, scaled by a fleet of systems engineering agents.

Agents run impact analysis, check test coverage, and verify requirements against your standards on every change. Your engineers make the architectural calls.

Learn more
Safe8.4%
Threshold
Warning4.3%
Threshold
Manual Action

Power supply revision submitted

+180gmass increase
Impact Analysis Agent

Threshold violation detected

Updated configuration falls below threshold

Step 1

A model revision is submitted to the system.

Impact Analysis Agent

Every change, every effect, before it ships.

03

Engineers stay in their tools. Flow's agents run across all of them.

When an engineer changes a CAD model, commits code in GitHub, or revises a SharePoint document, agents follow it across the program, updating connected artifacts automatically. Every engineering action becomes an automation trigger.

Learn more
Create new automation
Github
SlackOutlookSharePoint
Communication
DassaultSiemens NXAutodesk Fusion 360
CAD Tools
ANSYSAbaqusSolidWorks
Simulation Tools
LabVIEWTestStanddSPACE
Testing Tools

The engine underneath. Tuned to your program.

  • Sunlit sky in motion blur

    Systems Graph

    Every requirement, interface, test, and design, linked. When one changes, the graph knows what depends on it. Agents reason across the whole program.

  • Deep blue sky in motion blur

    Flexible Data Model

    Model your engineering data, relationships, and workflows without being constrained by a predefined schema.

  • Overcast horizon in motion blur

    Branching and Merging

    Every proposed change lives on a branch. Compare diffs, review impacts, and merge into the baseline when ready.

Move faster without lowering the bar, even as complexity grows.

0%
Reduction in time maintaining requirements, freeing systems engineers to focus on architecture.
0x
More test coverage in the same engineering hours, helping teams catch conflicts earlier.
0M+
Requirements managed in Flow by tens of thousands of engineers building the world's most ambitious hardware.

Defense grade security. For compliance-driven industries.

  • Built for Regulated Engineering

    Deploy in cloud, GovCloud, or self-hosted, with ITAR, export control, and data residency built in.

  • ITAR and CUI compliant

    ITAR and EAR alignment, NIST 800-171, CUI, SOC 2 Type II, GDPR, and CCPA.

  • Secure AI by Design

    Private inference, full audit trail on every AI action, and nothing ever used for model training.

  • ITAREAR ALIGNED
  • GDPRCOMPLIANT
  • SOC2TYPE II
  • NIST 800-171CONTROLLED