Guidewire, the insurance software maker used by more than 570 property and casualty insurers, has agreed to buy London-based hyperexponential for $1.7 billion in cash, plus up to $400 million more if the company hits recurring revenue targets — a deal worth up to $2.1 billion that puts AI agents inside the underwriting process. Why it matters: this is one of the largest acquisitions yet of an AI-native underwriting platform, and it shows established enterprise software vendors buying, not just building, agentic AI.
October 27, 2026
What happened
Guidewire announced on Tuesday that it has signed a definitive agreement to acquire Hyperexponential Ltd, known as hx, a London-based provider of AI-native underwriting and pricing software for commercial lines property and casualty insurers. Reuters reported the base price as $1.7 billion in cash, with up to $400 million in additional contingent consideration tied to specified recurring revenue targets.
hyperexponential is not a stranger to its buyer. It is an existing Guidewire PartnerConnect Technology Alliance Partner, and Guidewire said its platform has powered underwriting decisions across more than $75 billion in annual commercial P&C premium. Its customers include Aviva, Allianz, Sompo, Beazley, Markel, HDI, Cincinnati Financial, Convex, and Bowhead.
The deal details
Guidewire expects to fund the purchase with $1.0 billion in new term loan financing plus cash on hand, and said it has secured a binding debt commitment for the loan from Bank of America and Citibank. The acquisition is expected to close in the second quarter of Guidewire’s fiscal year 2027, with no impact on the first-quarter guidance it issued on September 3, 2026. Guidewire also expects the deal to add at least 650 basis points to fiscal 2027 ARR growth on an inorganic basis, and, starting in fiscal 2028, at least 150 basis points to its durable organic ARR growth.
What “agentic underwriting” means here
Guidewire is framing the acquisition around what it calls agentic underwriting: AI agents working alongside underwriters and actuaries to assess risk, price it, and make decisions, from complex specialty risks to high-volume commercial business. hyperexponential’s platform covers submission triage, risk assessment, pricing, rating, and portfolio steering. The pitch is that insurers can respond to more submissions, faster, with decisions that consistently reflect their own underwriting judgment — freeing human underwriters to focus on the risks where their expertise matters most.
Why it matters
Underwriting is where insurers make or lose money, so a $2.1 billion bet on AI agents in that workflow is a serious signal, not a marketing feature. The pattern for Tested Intelligence readers: the biggest AI deals are increasingly about agents embedded in a specific industry’s core decisions, backed by trusted data and distribution. Guidewire already sits inside more than 570 insurers in 44 countries — if agentic underwriting works as advertised, it will not need to win the market. It already has it.
Frequently asked questions
How much is Guidewire paying for hyperexponential?
$1.7 billion in cash, plus up to $400 million more if specified recurring revenue targets are met — up to $2.1 billion in total.
When will the deal close?
Guidewire expects the acquisition to close in the second quarter of its fiscal year 2027.
What does hyperexponential’s software do?
It is an AI-native underwriting and pricing platform for commercial P&C insurers, covering submission triage, risk assessment, pricing, rating, and portfolio steering across more than $75 billion in annual premium.
Sources: Reuters, Guidewire