How fast can AI actually move a drug from idea to candidate? In China, the answer is under a year.
Insilico Medicine, a Hong Kong-listed biotech, has compressed what normally takes four and a half years into roughly 13 months — and in its fastest program, just nine. The company’s CEO Alex Zhavoronkov says that by blending generative AI with wet-lab work in China, his team can nominate a preclinical candidate before most traditional projects even finish target validation.
That timeline covers early discovery and candidate selection only. Clinical trials, manufacturing, and regulatory review still come after. But even shaving years off the front end is a big deal in an industry where speed can mean the difference between a blockbuster and a also-ran.
AI drug discovery China: The mechanics behind the speed
Insilico uses generative AI to hunt for biological targets, design candidate molecules, and decide which compounds deserve a trip to the lab. The company says its programs typically reach preclinical-candidate nomination within 12 to 18 months after researchers synthesize and test between 60 and 200 molecules. That’s a workflow where AI generates designs, humans review them, and experiments confirm what works.
Lab work hasn’t been eliminated — it’s just more targeted. The AI models flag the most promising compounds, so teams need to synthesize fewer molecules to find a winner. Insilico hasn’t published a head-to-head comparison of AI-assisted versus conventional programs, but the raw numbers are telling: since 2021, the company has generated 31 preclinical candidates. Thirteen of those have received investigational new drug (IND) clearances, meaning they can move toward human studies.
Where the work happens
AI model development and evaluation happen in Montreal and Abu Dhabi. The experimental validation and scale-up take place in Shanghai, where the company has automated parts of biological sampling and compound screening. It’s a split model that plays to each location’s strengths: cutting-edge AI research in the West, cost-effective lab capacity in China.
Zhavoronkov credits China’s research infrastructure, lower operating costs, and regulatory environment for shaving about two years off traditional candidate-development timelines. That’s not just a local advantage. International drugmakers already work with Chinese contract research organizations, clinical-trial centers, and biotech firms. A Pfizer executive recently told Reuters that clinical development in China can run three times faster and at about half the cost of equivalent work in Europe.
China also introduced a 30-working-day review pathway in 2025 for eligible Class I innovative-drug clinical-trial applications. Complex cases can go to a 60-working-day review. Compare that with the multi-month or multi-year waits common in Western markets, and the gap is stark.
The business reality: Western revenue, Chinese speed
Despite operating research facilities in China, more than 90% of Insilico’s revenue comes from Western pharmaceutical companies. The reason is simple: China’s national insurance system offers lower reimbursement rates for highly novel drugs, so licensing deals in the U.S. and Europe are far more lucrative. Zhavoronkov declined to disclose the company’s China revenue.
Geopolitical concerns also shape strategy. Insilico limits sales of most of its software within China, even as it plans to expand its Shanghai research operations. The company has struck R&D agreements with Eli Lilly and Japan’s Takeda, and announced a proposed strategic alliance with Taiwan-based Bora Pharmaceuticals that could exceed $2.5 billion if fully implemented.
Zhavoronkov put it bluntly: “We now compete with Chinese pharmaceutical companies on timelines, and with traditional biotechnology companies in the West on novelty.”
Rentosertib: Insilico’s first AI-born drug heads to Phase III
Insilico’s most advanced AI-designed drug is Rentosertib, an oral treatment for idiopathic pulmonary fibrosis (IPF) — a disease that progressively scars the lungs. The company used AI to identify the biological target and generate and optimize the molecule’s structure. Rentosertib already completed a smaller Phase IIa study. Now it’s moving to Phase III.
The Phase III trial, registered in July 2026, plans to enroll 320 participants across 47 centers in China. It will compare Rentosertib against a placebo over 52 weeks, with the primary endpoint measuring the annual rate of decline in forced vital capacity — a standard lung-function metric. Enrollment was expected to begin in August 2026, with primary completion estimated for October 2029.
Candidate nomination is still an early milestone. Drugs must clear preclinical testing, human trials, manufacturing validation, and regulatory review before reaching patients. Industry data haven’t yet proven that AI-designed drugs are more likely to succeed in later-stage trials. A 2024 analysis of AI-native biotech pipelines reported Phase I success rates between 80% and 90%, and a Phase II rate of about 40% — broadly in line with historical industry benchmarks. The researchers cautioned that the number of Phase II programs was too small to draw firm conclusions.
Insilico has produced 31 preclinical candidates and secured 13 IND clearances. Rentosertib is its first program to reach Phase III. None of its experimental medicines has received commercial approval.
AI and robotics are reshaping biotech jobs
AI and lab automation are also changing who Insilico hires — and who it might not need. Zhavoronkov estimated that about 40% of the company’s software-side workforce could eventually be automated or displaced. He stressed that this isn’t an announced staff reduction, but a forecast of how roles will evolve.
Insilico employs about 400 people. Laboratory scientists and software engineers are being retrained to manage AI evaluation systems, automated equipment, and robotics. The retraining focuses on AI benchmarks and robotic systems as the company automates more research and software functions.
For more on how AI is transforming industries, see our coverage of Bristol Myers Squibb buying Nvidia’s AI system for drug discovery and the broader AI and big data trends shaping enterprise technology.