Hyperexponential

Hyperexponential sells hx Renew, a pricing decision platform built for specialty and London Market (re)insurance. Actuaries write models in Python-flavoured code against the platform's kernel; underwriters consume those models through generated interfaces tied to the same versioned artefact. The product sits where Excel rating sheets and bespoke in-house pricing systems have sat for decades.

Funding trajectory. Founded in London in 2017 by Amrit Santhirasenan and Michael Johnson, both actuaries with engineering backgrounds. Series A of $18M in 2021 led by Highland Europe. Series B of $73M in January 2024, led by Battery Ventures with Andreessen Horowitz and Highland Europe participating — cumulative funding of approximately $91M. Per TechCrunch's reporting of the Series B, Santhirasenan said the company had "more cash-on-hand than we've raised", signalling profitability at the round.

Positioning versus Federato. Federato's RiskOps platform is P&C-first and US-first, pitched as a unified underwriting workstation spanning intake, decisioning, and portfolio management. Hyperexponential's centre of gravity is different: actuarial pricing for specialty and London Market risks, where the hard part is expressing a model, iterating it weekly, and putting it in an underwriter's hands. The two products overlap at portfolio roll-up and submission-adjacent work, but hx Renew is a pricing platform first.

Public carrier deployments. Named customers at the Series B and on hyperexponential's own newsroom include Aviva, Convex, Conduit Re, and HDI. AEGIS London has a detailed public case study — 58 pricing models across 21 lines of business, built in-house in 9 months on hx Renew, replacing a bespoke legacy system that required external developer support. In June 2025, Markel announced deployment of hx Renew for primary Casualty and Professional products across the US and Bermuda, extending an existing UK relationship. Hyperexponential was a Lloyd's Lab Cohort 3 alumnus (2019), which structured its early access to the London Market.

Analyst coverage. Everest Group published a 2025 review of the hx Live product announcements (Portfolio Intelligence and Kernel), the most substantive independent analyst document publicly available. No Celent, Gartner, or Forrester leader-quadrant placement for specialty pricing is publicly indexed as of April 2026. The gap is worth naming: the vendor is well-capitalised and well-sourced via customer disclosures, but the third-party evaluation layer is thin.

What it does not do. Everest Group's 2025 review flags AI governance, ecosystem interoperability, and scalability to the largest insurers as the open questions on the platform's trajectory. Hyperexponential's core strength — code-first pricing with full actuarial control — is also the constraint for buyers who want a point-and-click rating engine with no modelling team behind it.