AIG says Claude cut insurance submission review time by more than 90%

AIG’s underwriters can start reviewing an insurance submission with an AI-generated risk summary instead of spending weeks gathering information first. A new Anthropic case study says the insurer’s Claude-based workflows cut submission review time by more than 90% where deployed, while allowing staff to review every applicable submission—not just those they previously had time to examine.

The disclosure describes a deployment that had reached eight AIG business lines as of March 31, 2026, rather than a rollout beginning now. Its performance figures are AIG-reported results published by the company’s AI supplier, not an independent evaluation. The central change is how much preparation happens before an underwriter begins assessing a submission.

From scattered documents to a risk summary

AIG began working on the problem in 2023. Information arrived from insurance brokers, clients and third parties in many formats, leaving employees with substantial manual work before they could assess risk. The insurer said it lacked the resources to review every applicable submission and viewed that constraint as a source of missed business opportunities.

Working with Anthropic, it built Underwriting by AIG Assist, initially using Claude 2.0. The workflow processes and analyzes incoming submission data, then produces a curated risk summary with a full audit trail. That changes the underwriter’s starting point: instead of gathering information for weeks before beginning a summary, the employee receives one at the outset of the review.

AIG designed the system to process every submission received in the business lines where it operates. The company says the deployed workflows now enable review of 100% of applicable submissions. That figure concerns the scope of review within those deployments; it is not a claim that every AIG business uses the system.

More submissions reach the quoting stage

The case study gives a closer view of AIG Lexington’s Middle Market Property business. As of March 31, its underwriters were reviewing more than 30% more submissions and quoting them 55% faster, according to the account. These are separate measures from the reduction in submission review time: they describe the volume handled and the speed of producing a quote.

For AIG, that addresses the bottleneck it originally identified: submissions that staff could not get to represented potential business left unexamined. The reported gains therefore concern both faster preparation and greater capacity to consider incoming business, rather than simply making the same number of document reviews take less time.

Claims pilots and a proposed division of work

AIG has also extended Claude into its claims organization, though the results described are from early pilots. Claims by AIG Assist reduced the time to respond to clients after a claim was filed from days to hours, the company says. Coverage reviews fell from hours to minutes. Those measures describe response and review times, not the time required to settle a claim.

Two further uses remain exploratory rather than deployed capabilities:

• Software engineering: AIG is exploring access to Claude Code through Claude Enterprise, with governance controls suited to a regulated insurer.
• Underwriting agents: AIG is considering teams of purpose-built agents, developed and deployed with Anthropic’s help, to divide up parts of the underwriting process.

One scenario would assign separate agents to extract submission data, check risks against underwriting guidelines and compare pricing with portfolio targets. A fourth agent would bring their work together. In that proposed setup, underwriters would oversee every decision—not hand the insurance decision to the agents.