What Oasis Loss Modelling Framework does

Oasis Loss Modelling Framework Ltd. is a UK not-for-profit company founded in 2012 and headquartered in London that operates an open source catastrophe modelling platform for the global (re)insurance industry. The platform provides a full simulation engine, the Oasis ktools computation layer, a web-based user interface, an API for integration with other systems, and the Oasis Model Development Toolkit for building, testing and deploying catastrophe models. It is collectively owned by close to 40 of the world's leading insurers, reinsurers, brokers and financial institutions, supported by an Associate Membership of over 100 companies and academics, and its ecosystem comprises 18+ model suppliers covering 90+ models across perils including flood, windstorm, earthquake, severe convective storm, and cyber.

The company's core technology is the open source Oasis LMF platform, which has been freely downloadable from GitHub since July 2018, together with the Open Data Standards (OED for exposure, ORD for results) that enable interoperability across cat modelling platforms. The most recent major release, Oasis LMF 2.5.0 in February 2026, completed a multi-year architectural modernisation to a Python-only codebase. The platform supports a fully featured financial module for direct and reinsurance contracts and exposes models through multiple distribution channels including Verisk's Model Exchange, Impact Forecasting's ELEMENTS platform, and the Cestida Platform.

Oasis generates revenue through a combination of membership fees from institutional Members (with voting rights at the AGM), commercial model distribution through The Wave consortium (annualised pricing of $479K for small companies to $930K for large companies on 3-year deals covering models from ARA, CoreLogic, Impact Forecasting and JBA), EU Horizon 2020 and IKI grant funding, and the newly launched Oasis SaaS commercial platform (Q3 2025), an industry-owned, vendor-neutral catastrophe modelling SaaS backed by Moody's Intelligent Risk Platform and AWS infrastructure that targets access to over 300 model providers. Primary customers are (re)insurers, brokers and financial institutions, with secondary segments in government/public sector, academia, and international organisations such as the Insurance Development Forum.

Name

Oasis Loss Modelling Framework

Legal name

Oasis Loss Modelling Framework Ltd.

Website

https://oasislmf.org

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Oasis Loss Modelling Framework is a UK not-for-profit providing an open source catastrophe modelling platform, collectively owned by ~40 leading (re)insurers and serving insurers, reinsurers, brokers and financial institutions with model execution, financial modules, and open data standards.

Ownership category

akta.pro rank

Product category

Catastrophe Modelling Software

NAICS

Computer Systems Design Services (541512), Computer Systems Design and Related Services (5415)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373), Fire, Marine & Casualty Insurance (6331)

akta.pro primary industry

Catastrophe Modeling & Exposure Management (FSAOAIAB)

akta.pro secondary industries

Catastrophe Risk Modeling & Analytics Services (FSAOACAL), Climate Hazard & Catastrophe Modeling (Flood, Wind, Wildfire, Heat, Sea-Level Rise) (EUABALAA), Resilience Finance & Risk Transfer Analytics (Parametric Design, Cat Bonds, Public Risk Pools) (EUABALAK), Enterprise Risk Management (ERM) Advisory (BPAHAFAA)

Keywords

• Catastrophe modelling software
• Open source risk analytics
• Insurance exposure management
• Natural catastrophe models
• Reinsurance risk assessment

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Revenue model

1. Membership Fees: Insurers, reinsurers, brokers and financial institutions pay membership fees. Members are eligible to vote at the Annual General Meeting and attend Members' Advisory Group.
2. Open Source Platform (Free): All components of catastrophe modelling software are open source and downloadable from GitHub free of charge. This lowers barriers to adoption.
3. Commercial Model Distribution: Commercial models distributed through The Wave consortium with annualised pricing from $479,000 for small companies to $930,000 for large companies (3-year deals). Models from ARA, CoreLogic, Impact Forecasting and JBA for USA, Japan and Europe.
4. Oasis SaaS Platform: Industry-owned, vendor-neutral catastrophe modelling SaaS platform providing access to over 300 Oasis model providers. Commercial launch planned for Q3 2025.

Pricing tiers

Go-to-market motion2 records

Distribution channels8 records

Marketing channels8 records

Core offering

Oasis Loss Modelling Framework provides an open source catastrophe modelling platform with a full simulation engine for developing, deploying, and executing catastrophe models used by insurers, reinsurers, brokers and financial institutions. The platform is complemented by a web-based user interface, an API for integration, Oasis ktools for executing models at scale, and open data standards (OED/ORD) for interoperability. Models can come from any source including model vendors, academic groups, or research institutions.

Product overview

Oasis Loss Modelling Framework is an open-source catastrophe modelling ecosystem consisting of multiple integrated products. The core offering is the Oasis Loss Modelling Framework platform providing a full simulation engine for developing, deploying, and executing catastrophe models. This is complemented by the Oasis User Interface (a web-based front-end), the Oasis Model Development Toolkit (for building new models), and the Oasis Model Library (hosted catalogue of models in AWS). The ecosystem is supported by open data standards including Open Exposure Data (OED) and Open Results Data (ORD) formats for data interoperability. Additional products include the Inhance Spatial Disaggregation API from ImageCat for exposure data solutions. The recently announced Oasis SaaS Platform (launching Q3 2025) will provide cloud-hosted access to over 300 model providers. The platform ecosystem now supports over 90 models from more than 18 suppliers covering perils including flood, windstorm, earthquake, severe convective storm, and cyber risks.

Differentiator

Problem solved

Functional benefit

Brands

• Oasis Platform: A catastrophe modelling system encompassing data standards, API, and tools for building and running models
• Oasis User Interface (UI)
• Oasis Model Development Kit (MDK)
• Oasis Model Library
• Open Data Standards (ODS)
• Oasis ktools
• Oasis Hub
• Oasis Palm Tree

Products and services

• Oasis Loss Modelling Framework (Core Platform)
• Oasis SaaS Platform

Quantifiable outcome

• Access to over 90 models from 18+ suppliers providing genuine model diversity for risk assessment
• +2 more outcomes

Named customers3 records

Segments4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability1 record

Feature6 records

Partnerships

22 partnerships are on record, tiered core and minor.

• Moody's Intelligent Risk PlatformcoreTechnology or IntegrationBacking the Oasis SaaS platform launch as a key technology partner, providing risk platform infrastructure for the industry-owned platform.
• Amazon Web Services (AWS)coreTechnology or IntegrationProvides cloud infrastructure for the Oasis SaaS platform and Oasis Model Library.
• AoncoreStrategic or Co-development PartnerMajor industry player backing the Oasis SaaS initiative as a solution to counter consolidation risks in the catastrophe modelling market. Impact Forecasting provides catastrophe models deployed via Oasis.
• AllianzcoreStrategic or Co-development PartnerMajor insurance company backing the Oasis SaaS initiative as a solution to counter consolidation risks in the catastrophe modelling market.
• Guy CarpentercoreImplementation/ SI/ Consulting PartnerStrategic leadership in Baloise project, establishing partnership with GEM to develop Baloise-owned earthquake model. Provided strategic consulting and technical guidance including recommending Oasis LMF adoption.
• Global Earthquake Model (GEM)coreStrategic or Co-development PartnerContributed specialised seismic risk expertise to Baloise project. Developed Baloise-owned earthquake model and focuses on verification and validation activities for the Oasis platform.
• Aon's Impact ForecastingcoreStrategic or Co-development PartnerProvided comprehensive suite of catastrophe models covering flood, windstorm, severe convective storm, and earthquake across multiple European countries. Deployed via Oasis LMF.
• The Wave ConsortiumcoreStrategic or Co-development PartnerInternational project creating openness, interoperability and lowering costs of risk modelling and data. Includes CoreLogic, Fractal Industries, Xceedance, Concirrus, JBA Risk Management, ARA, Impact Forecasting, Simplitium, SpatialKey.
• CestidacoreChannel Partner/ Reseller/ DistributorPlatform distributing Oasis-based models including the Extortion Loss Model from Concinnity Risks. Works with Concinnity as technical partner during model design and testing.
• JBA Risk ManagementcoreStrategic or Co-development PartnerLaunched high-resolution US Inland Flood Model 2025 built on Oasis LMF. All JBA flood models are Oasis-enabled. Model accessible via ELEMENTS, Verisk Model Exchange, or directly in Oasis.
• VeriskcoreChannel Partner/ Reseller/ DistributorVerisk's Model Exchange distributes JBA models built on Oasis with minimal integration effort.
• FathomcoreStrategic or Co-development PartnerDeveloped US Flood model and US CAT model for the Oasis platform. Flood methodology and model validation are peer-reviewed and published in scientific journals.
• CoreLogiccoreStrategic or Co-development PartnerDeveloping US Quake model for Oasis platform. CoreLogic U.S. Earthquake model deployed on Oasis.
• Athenium AnalyticsminorStrategic or Co-development PartnerDeveloping Convective Storm Model for the Oasis platform.
• ERN and REDcoreStrategic or Co-development PartnerImplemented Pan-European Earthquake Risk Model on Oasis. ERN covers Latin America, Caribbean, Europe with over 40 countries. RED focuses on earthquake and flood perils.
• QOMPLX (formerly Fractal Industries)coreTechnology or IntegrationQ:INSURANCE platform supports Oasis LMF compatible catastrophe models. Enables integration of multiple models and sensitivity analysis. Partner in The Wave consortium.
• SimplitiumcoreTechnology or IntegrationDeveloped Open Exposure Data (OED) format in partnership with Oasis customers. Provides hosted catastrophe modelling platform. Partner in The Wave consortium.
• National Reinsurance Corporation of Philippines (Nat Re)coreStrategic or Co-development PartnerLocal leading partner in the Philippines for the IKI project. Hosts capacity building workshops and provides in-country expertise.
• Potsdam Institute for Climate Impact Research (PIK)coreStrategic or Co-development PartnerInternational implementing partner for IKI project. Conducts capacity building workshops on climate data processing and analysis.
• UK Met OfficecoreStrategic or Co-development PartnerInternational implementing partner for IKI project. Provides historical storm reconstructions for Bangladesh using novel approach.
• Insurance Development Forum (IDF)coreStrategic or Co-development PartnerWorking with IDF on interoperability and global exposure projects. IDF Risk Modelling Group leads the Interoperability Project for platform-independent exposure data standards.
• UNISDRminorStrategic or Co-development PartnerWorking with UNISDR on new Global Risk Assessment Framework (GRAF).

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• JBA Risk Management: JBA is a specialist flood and catastrophe modelling vendor that builds its models natively on the Oasis LMF (e.g., US Inland Flood Model 2025). It is one of the most committed model suppliers to Oasis and a clear direct peer in offering Oasis-native peril models to insurers.
• ARA (Applied Research Associates): ARA supplies catastrophe models (hurricane, earthquake) to The Wave consortium and runs them on Oasis LMF. It is a direct peer as a model supplier operating natively in the Oasis ecosystem and competing with both proprietary incumbents and other Oasis-based vendors.
• Fathom: Fathom develops flood and catastrophe models for the Oasis platform (US Flood, US CAT). It is a comparable peer because it is a focused, science-led peril-modelling firm that has chosen the Oasis ecosystem as its primary distribution route versus building its own SaaS.
• CoreLogic (catastrophe modelling): CoreLogic develops proprietary catastrophe models (e.g., US Earthquake) and is also a Wave consortium partner distributing Oasis-enabled models. It is directly comparable because it both supplies models into the Oasis ecosystem and competes with them via its own channels.
• Aon / Impact Forecasting: Impact Forecasting is Aon's catastrophe modelling arm and a major supplier of models on the Oasis platform. It both partners with Oasis (distributing its models through the LMF) and competes via the proprietary ELEMENTS platform, putting it in the same space of vendor-led cat modelling distribution that Oasis SaaS now targets.

Emerging players

• Athenium Analytics: Athenium is developing a Convective Storm Model for the Oasis platform. It is an emerging peer that focuses on a single high-growth peril and has chosen Oasis as its distribution route, making it comparable in go-to-market and customer base even if its model set is narrower.
• GEM (Global Earthquake Model Foundation): GEM is a not-for-profit, scientific earthquake risk modelling foundation that co-develops models for the Oasis platform (e.g., Baloise-owned earthquake model) and contributes verification/validation capability. It is comparable as a public-good seismic modelling organisation working alongside Oasis.

Regional players

• ERN (Evaluación de Riesgos Naturales): ERN has implemented a Pan-European Earthquake Risk Model on Oasis covering 40+ countries and also operates across Latin America and the Caribbean. It is a regional peer because it focuses on geographies where commercial catastrophe modelling coverage is thin and uses Oasis as its distribution platform.

Broad incumbents

• RMS (Risk Management Solutions, Moody's): RMS, now part of Moody's, is one of the 'big three' proprietary catastrophe modelling vendors. While it is not directly on Oasis, it competes head-to-head with Oasis-based models for insurer risk analytics spend and is the dominant incumbent against which Oasis positions its open, interoperable alternative.
• Verisk (Catastrophe Solutions / Model Exchange): Verisk is one of the dominant catastrophe modelling vendors through its Catastrophe Solutions business and the Verisk Model Exchange. It directly distributes Oasis-based models (e.g., JBA) via its marketplace and competes with Oasis on proprietary model offerings, making it the most analogous broad incumbent to Oasis's open SaaS platform.

Market position

Strengths5 records

Weaknesses1 record

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/oasislmf
• GitHubgithub.com/OasisLmf
• YouTubeyoutube.com/channel/UCVHljdIp5JwbspEHhHDnBXg
• LinkedInlinkedin.com/company/6721129

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Oasis Loss Modelling Framework