AI-Assisted Pro Se Litigation Is Flooding Federal Courts
AI-assisted pro se litigation is reshaping the federal court landscape at a pace that few legal professionals anticipated. A new study from researchers at MIT and the University of Southern California draws on more than 4.5 million federal civil cases filed between 2005 and 2026, and the findings carry real implications for Illinois lawyers on both sides of the docket.
The numbers tell a striking story. For roughly two decades, self-represented (pro se) litigants accounted for a steady 11% of non-prisoner federal civil cases. That figure held firm through the Great Recession, major waves of ACA litigation, and immigration surges under multiple administrations. Then, beginning in 2023, it broke. By fiscal year 2025, the pro se share had climbed to 16.8%, and pro se filings nearly doubled their long-term annual average. The researchers trace this inflection point directly to the public release of capable large language models, specifically GPT-4 in March 2023.
AI-Assisted Pro Se Litigation Is a Plaintiff Story
One of the study's sharper findings is where the increase concentrates. The surge loads almost entirely on plaintiff-side filings. Self-represented plaintiffs nearly doubled their case count from the pre-AI baseline to fiscal year 2025, while defendant-side pro se representation fell slightly. That distinction matters for lawyers. Opposing counsel is not disappearing. The person sitting across the aisle without a lawyer is increasingly the one who brought the case, armed with an AI-drafted complaint.
Also, the increase concentrates in case types where AI provides the most filing-stage assistance, which the researchers call "simple" categories. Civil rights complaints, consumer credit disputes, and foreclosure proceedings all saw sharp increases. Complex categories requiring sustained expertise, such as patent infringement and securities fraud, showed little change. AI helps people get into court. It does not yet help them win there.
What Is Happening Inside the Federal Courtroom
Even as outcomes remain largely unchanged, what happens inside each case has shifted considerably. The study finds that docket activity per pro se case in the first 180 days rose 38% compared to the pre-AI baseline. Moreover, total docket entries per court from pro se cases jumped 158% by mid-2025. Every one of those entries, whether a motion, a response, or a scheduling request, represents a claim on judicial time and, by extension, lawyer time.
Notably, represented parties are also generating more docket activity. Per-case docket entries for lawyer-represented litigants rose 23% over the same period, suggesting lawyers themselves are using AI tools to produce written submissions more efficiently and more frequently. The burden is rising on both sides of the bar.
Cyber Liability Follows the AI Footprint
As AI tools become more embedded in legal practice on both sides of the docket, the associated cyber liability exposure warrants equal attention. Lawyers using AI platforms to draft filings, manage client communications, or process case documents are introducing new points of potential data vulnerability into their workflows.
Client confidentiality obligations do not pause for technology adoption, and the same AI diffusion driving pro se filings is accelerating the attack surface that bad actors look to exploit. Illinois lawyers integrating AI tools should review their cyber liability coverage alongside their malpractice protection to ensure neither leaves a gap the other cannot fill.
The AI Fingerprint Is Now in the Documents Themselves
To move beyond inference, the researchers applied an AI-text detection tool to a random sample of 1,600 federal civil complaints filed between 2019 and 2026. In the four years before capable AI tools were widely available, the detector flagged exactly one document out of 800 as AI-generated. In early 2026, the detection rate had climbed to 18 percent, rising consistently year over year. Roughly one in five federal civil complaints now contains text the detector classifies as AI-generated.
Because the sample skews toward attorney-filed documents (pro se filings are underrepresented in the public archive used), the researchers note that 18 percent is likely a floor, not a ceiling. The actual prevalence of AI-generated text in pro se complaints is probably higher.
What The Increase in AI-Assisted Pro Se Litigation Means for Illinois Lawyers
The implications are practical and immediate. Lawyers should expect to encounter more opposing pro se litigants in civil matters, particularly in employment discrimination, civil rights, consumer credit, and personal injury cases. These litigants may arrive with well-structured complaints that survived early pleading scrutiny but lack the legal judgment to navigate what follows. That creates a different kind of litigation dynamic than lawyers may be accustomed to managing.
It also raises real questions about case strategy and efficiency. When pro se docket activity doubles and represented-side filings increase alongside it, cases generate more paper, more motion practice, and more judicial interaction even when outcomes stay the same. Lawyer time on each matter can stretch in ways that fee arrangements may not fully account for.
AI-assisted pro se litigation also adds a new dimension to the professional responsibility conversation Illinois lawyers are already having about their own AI use. Understanding how the other side uses these tools and where their limitations appear in the litigation record is becoming part of competent practice.
Protect Your Illinois Law Firm with ISBA Mutual
The legal landscape is shifting faster than most professional liability frameworks were designed to anticipate. ISBA Mutual has protected Illinois lawyers through decades of change in the profession, and AI is the next chapter in that story.
Whether you have questions about your malpractice coverage in the context of AI use, want to understand your cyber liability options, or simply want to talk through how a changing litigation environment affects your risk profile, ISBA Mutual is ready to help. For risk management and professional liability coverage in the rapidly changing legal world, contact the specialists at ISBA Mutual Insurance Company.
The full study, "Access to Justice in the Age of AI: Evidence from U.S. Federal Courts," is available on SSRN and was authored by Anand V. Shah of MIT and Joshua Y. Levy of the University of Southern California. The ABA Journal covered its findings on May 26, 2026.
