Pasteur Labs
Pasteur Labs builds an AI-native Simulation Intelligence platform for industrial R&D, national security, and energy security sectors. Built on JAX with end-to-end differentiable physics, the platform integrates heterogeneous CAE/CAD toolchains and serves enterprise engineering teams through subscription access and an open-source developer ecosystem.
- Company typePrivate
- Founded2023
- HeadquartersBrooklyn, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Pasteur Labs does
Pasteur Labs (operating as Pasteur-ISI) is a simulation intelligence company building an AI-native platform for engineering and scientific R&D in the physical sciences. The company serves enterprise engineering teams across industrial R&D (nuclear fission and fusion energy, aerospace and naval propulsion, power distribution and storage, medical instruments, remote sensing arrays, advanced manufacturing, climate and environmental modeling), national security (aerospace and defense, contested environments, space systems), and energy security (nuclear fusion, power grid, energy storage) verticals. Named enterprise customers include Honeywell Aerospace and AVS (US Head of Space division). The company's stated mission is to address the bottleneck that "the inability to model multi-scale phenomena and their cause-effect mechanisms" imposes on physical science R&D, where over 90% of experimentation remains in the real world rather than in simulation.
The company's core offering is the Simulation Intelligence (SI) Platform, an AI-native modeling and simulation system built on the JAX framework that integrates automatic differentiation and differentiable programming throughout the engineering workflow. Key technical components include Tesseracts—self-contained, self-documenting, self-executing components for differentiable scientific computing that support CLI, REST API, and Python SDK interfaces and enable pipeline-level automatic differentiation across heterogeneous tools written in Fortran, C++, Julia, JAX, PyTorch, and shell scripts. The platform additionally features the AutoPhysics Catalogue of pretrained physics-informed ML models for CAE workflows, an end-to-end autodiff-native and git-native architecture with a Digital-Physical Thread for version-controlled artifact management, automated pipeline orchestration across heterogeneous CAE and MBSE toolchains, and specialized differentiable physics testbeds for inertial fusion energy research. Native integrations span Ansys (PyMAPDL/SpaceClaim), Altair, Unity, Unreal Engine, and major CAD/CFD/CAM/PLM systems. Quantified customer outcomes include design-analysis-report cycle reductions from 8 weeks to 3 days, performance maps from 75 design-scenario combinations instead of 6 simulations, and AI onboarding from 20-60 hours with HPC to 10-30 minutes on local machines.
The business model combines enterprise software subscription access to the SI Platform with an open-source developer-led growth strategy. The SI Platform is currently distributed via invitation-only "Request access" CTAs to select partners and customers, with public commercial launch planned for late 2025 and key Nobel-Turing applications to follow. Tesseract Core, the open-source foundation, is available under Apache License 2.0 on GitHub, accompanied by a Discourse community forum, hackathons, and academic collaborations with ICERM/Brown, Imperial College London, U. Michigan, and U. Rochester Laboratory for Laser Energetics. Pricing is not publicly disclosed. The company is Delaware-incorporated, headquartered in Brooklyn, NY, with a distributed team across four continents and 11-50 employees drawn from DeepMind, NASA, Tesla, Nvidia, CERN, AFRL, Meta, and Ansys. Satellite offices are opening in Copenhagen, Cambridge (UK), Vancouver, and an additional NYC location in 2025, with Seattle already established as a satellite office.
Pasteur Labs firmographics
Firmographics- Name
- Pasteur Labs
- Legal name
- Pasteur Labs, Inc.
- Website
- https://pasteurlabs.ai
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Pasteur Labs builds an AI-native Simulation Intelligence platform for industrial R&D, national security, and energy security sectors. Built on JAX with end-to-end differentiable physics, the platform integrates heterogeneous CAE/CAD toolchains and serves enterprise engineering teams through subscription access and an open-source developer ecosystem.
- Ownership category
- akta.pro rank
Pasteur Labs industry classification
Industry- Product category
- Scientific Machine Learning Software
- NAICS
- Computer Systems Design Services (541512), Software Publishers (5132)
- SIC
- Services-Computer Integrated Systems Design (7373), Services-Prepackaged Software (7372)
- akta.pro primary industry
- AI Application Enablement Platforms (Copilot/Agent Frameworks, SDKs) (HDAEANAJ)
- akta.pro secondary industries
- Model Development & Training Platforms (AutoML, Notebooks, Feature Stores) (HDAEANAB), Prompt Engineering, Orchestration & LLMOps Tooling (HDAAACAD), AI Observability, Monitoring & Evaluation Platforms (Drift, Quality, Safety) (HDAEANAF)
Keywords
Where Pasteur Labs is headquartered
LocationHeadquarters
- HQ city
- Brooklyn
- HQ country
- United States
- HQ region
- North America
Offices6 records
Markets served
Pasteur Labs business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- SI Platform Access: The Simulation Intelligence Platform is currently available for select partners and customers through invitation, with full public launch planned for late 2025. Revenue model appears to be enterprise software/SaaS with potential subscription or usage-based pricing for the platform access.
- Enterprise Licensing: Platform targeting industrial R&D, energy security, and national security sectors with enterprise contracts for computational engineering and physics-AI solutions.
- Open Source Community: Tesseract Core is free and open source under Apache License 2.0. Open source serves as developer-led growth channel to drive adoption and potential enterprise upsell.
Go-to-market motion2 records
Distribution channels2 records
Marketing channels8 records
Pasteur Labs product offering
Product offeringCore offering
Pasteur Labs builds and sells the Simulation Intelligence (SI) Platform, an AI-native modeling and simulation environment that integrates AI with physics simulation for industrial R&D, energy security, and national security applications. The platform provides in-silico playgrounds for human-machine teams, with Tesseract Core (open source, Apache 2.0) enabling end-to-end differentiable scientific computing pipelines. Target customers include engineering teams in aerospace, defense, nuclear energy, and computational engineering facing expensive, slow physical experimentation cycles.
Differentiator
Problem solved
Functional benefit
Products and services
- SI Platform (Simulation Intelligence Platform) AI-native modeling and simulation platform providing end-to-end autodiff-native and git-native workflows for industrial R&D, energy, and national security engineering teams. Coordinates heterogeneous CAE/MBSE toolchains into headless pipelines that generate AI/ML-ready datasets and enables gradient-based optimization across full design spaces.
- Tesseract Core Open source CLI and Python SDK for building, running, and executing end-to-end differentiable scientific computing pipelines. Provides Tesseract.from_image(), apply(), and jacobian() programmatic interfaces plus REST API endpoints, supporting language-agnostic components in Fortran, C++, Julia, JAX, PyTorch, and shell.
- Tesseract-JAX Open source Python package that integrates Tesseracts with JAX, enabling end-to-end differentiable pipelines that leverage JAX's automatic differentiation, JIT compilation, and vectorization primitives.
- Tesseract-Streamlit Open source Streamlit-based UI component for building interactive front-ends on top of Tesseract differentiable pipelines.
Quantifiable outcome
- Design-Analysis-Report cycles reduced from 8 weeks to 3 days
- +3 more outcomes
Companies that use Pasteur Labs
Customer profileNamed customers2 records
Segments4 records
Ideal customer profiles3 records
Pasteur Labs technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration8 records
AI capability8 records
Feature6 records
Pasteur Labs partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core and major.
- FOSAIcoreAcquisition of FOSAI, a provider of space systems and autonomy solutions for aerospace and defense sectors. Aims to enhance Pasteur Labs' AI-driven physics simulation platform for real-world applications in critical, contested environments.
- NASA FDL (Frontier Development Lab)corePasteur Labs alongside NASA, Google Cloud, and Nvidia supports Frontier Development Lab in establishing technically and scientifically rigorous fundamentals for AI applications understanding space phenomena. CEO Alexander Lavin advising FDL-X Heliolab initiative using AI to forecast geomagnetic storm impact.
- ICERM (Institute for Computational and Experimental Research in Mathematics) at Brown UniversitymajorCo-organized inaugural workshop on industrialization of Scientific Machine Learning with ICERM. Workshop brought together nearly 100 scientists from around the world for dialogue on cutting-edge advances in industrial SciML applications.
- Ergodic LLCcoreCollaboration on nuclear fusion R&D. Ergodic LLC works with Pasteur Labs on inertial fusion research and development of differentiable physics modeling tools.
- U. Rochester Laboratory for Laser Energetics (LLE)coreCollaboration on inertial fusion energy research. Joint work involves designing bandwidth schema for minimizing laser plasma instabilities and developing differentiable physics testbeds for fusion experiments.
- Imperial College LondonmajorAcademic collaboration with leading nuclear fusion/plasma physics researchers from Imperial College as part of fusion R&D efforts.
- University of MichiganmajorAcademic collaboration with plasma physics researchers from UMich as part of nuclear fusion research and development activities.
Scale indicators3 records
Recent moves6 records
Expansion highlights7 records
Pasteur Labs competitors and assessment
Company assessmentDirect peers
- PhysicsX: AI-for-engineering-simulation startup building physics-informed ML and surrogate models for industrial R&D; directly comparable to Pasteur Labs' Simulation Intelligence platform in target market, technology stack, and aerospace/automotive use cases.
Broad incumbents
- Ansys: Dominant CAE vendor (FEA, CFD, multiphysics) with explicit AI roadmap and integrations targeted by Pasteur Labs' Tesseract wrappers; represents the established incumbent Pasteur Labs is positioning to disrupt or complement in enterprise simulation workflows.
- Siemens Digital Industries Software (Simcenter): Broad PLM/CAE suite with Simcenter for simulation and digital twin, plus Xcelerator platform; competes head-to-head with the SI Platform in industrial R&D and is increasingly embedding AI into its multiphysics workflows.
- Altair Engineering: CAE and simulation software suite (HyperWorks, Inspire) with physicsAI and simulation-led design offerings; explicitly listed as an integrated partner for the SI Platform and a peer across industrial simulation customers.
- Dassault Systèmes (3DEXPERIENCE): Major PLM/CAD/CAE vendor with 3DEXPERIENCE platform and SIMULIA multiphysics suite; a broad incumbent overlapping with Pasteur Labs in automotive, aerospace, and industrial engineering simulation.
- NVIDIA (Modulus / Omniverse): NVIDIA's Modulus physics-ML framework and Omniverse digital-twin platform target the same AI-for-engineering-simulation intersection as the SI Platform, with deep ties into the JAX/PyTorch ecosystem and co-partner (with Pasteur Labs) on NASA FDL.
- COMSOL: Multiphysics simulation software widely used in industrial R&D and academic research; an incumbent CAE player whose user base overlaps with Pasteur Labs' target adopters of differentiable simulation pipelines.
Emerging players
- Rescale: Cloud HPC and simulation orchestration platform for CAE/ML workloads; an emerging peer that similarly wraps heterogeneous simulation toolchains into managed pipelines, though with less focus on differentiable pipelines.
- Cosmo Tech: Industrial digital twin and system-of-systems simulation vendor for energy and infrastructure; comparable in vertical (energy security, industrial R&D) and emphasis on hybrid physics+AI modeling of complex engineered systems.
- SandboxAQ: AI+physics startup spanning simulation, sensing, and cryptography for enterprise and government; competes with Pasteur Labs in adjacent areas of physics-based AI for industrial and national-security customers.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Pasteur Labs social profiles
Digital presencePasteur Labs financial estimates
Financial estimateRevenue estimate
Valuation estimate
Pasteur Labs leadership team
Management profileNumber of profiles
Profiles4 records
Pasteur Labs funding detail
Funding detailFunding overview
Funding rounds2 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Pasteur Labs M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Pasteur Labs
What does Pasteur Labs do?
Pasteur Labs builds and sells the Simulation Intelligence (SI) Platform, an AI-native modeling and simulation environment that integrates AI with physics simulation for industrial R&D, energy security, and national security applications. The platform provides in-silico playgrounds for human-machine teams, with Tesseract Core (open source, Apache 2.0) enabling end-to-end differentiable scientific computing pipelines. Target customers include engineering teams in aerospace, defense, nuclear energy, and computational engineering facing expensive, slow physical experimentation cycles.
Is Pasteur Labs a public or private company?
Pasteur Labs is a private company. It is classified as venture growth investor backed and is currently operating.
When was Pasteur Labs founded?
Pasteur Labs was founded in 2023. It employs 11 to 50 people.
Where is Pasteur Labs based?
Pasteur Labs is headquartered in Brooklyn, United States, in the North America region.
How does Pasteur Labs make money?
Three revenue lines are on record. SI Platform Access are the primary driver. The others are enterprise Licensing and open Source Community.
Who are Pasteur Labs's main competitors?
PhysicsX is listed as a direct peer. Broad incumbents are Ansys, Siemens Digital Industries Software (Simcenter), Altair Engineering, Dassault Systèmes (3DEXPERIENCE), NVIDIA (Modulus / Omniverse) and COMSOL. Emerging players are Rescale, Cosmo Tech and SandboxAQ.
Does Pasteur Labs have an API?
Yes. Tesseract provides a Python SDK and CLI for building, running, and executing end-to-end differentiable scientific computing pipelines. The Python SDK allows programmatic interaction via Tesseract.from_image(), apply(), jacobian() methods. A REST API is available for remote invocation. Tesseracts expose standard JSON interfaces with apply() and jacobian() endpoints. Language-agnostic: supports Fortran, C++, Julia, JAX, PyTorch, and shell scripts as component implementations, with Python as the orchestration glue. Developer documentation is at docs.pasteurlabs.ai/projects/tesseract-core/latest.
What industry is Pasteur Labs in?
Pasteur Labs's product category is Scientific Machine Learning Software. Its primary akta.pro industry code is HDAEANAJ, AI Application Enablement Platforms (Copilot/Agent Frameworks, SDKs), with a secondary code of HDAEANAB, Model Development & Training Platforms (AutoML, Notebooks, Feature Stores). Its NAICS code is 541512 and its SIC code is 7373.