Explainer, Arbitration, Law and regulation
Awards challenged over AI use: what courts have decided so far
In the cases we found, one court has annulled an award that was challenged over AI use, and a US challenge ended before the court looked at AI. Here is what each decided, and what is still open.
Published Last reviewed 5 min readBy SpyroLex
In the cases we found, one award has been annulled after a challenge over AI use. In April 2026 the Superior Court of Québec annulled an award after finding that the authorities it relied on did not exist and that the arbitrator’s authority had been delegated ([114] to [116]). A US petition on similar grounds was dismissed in December 2025 for lack of jurisdiction, with no ruling on AI.
What the Québec court decided
In ARIHQ c. Santé Québec, 2026 QCCS 1360, two claimants applied to annul a sole arbitrator’s award of 8 August 2025. The award had dismissed a claim for unpaid remuneration of about C$1.2 million because a contractual notice was late. One ground for annulment was that the arbitration procedure had not been observed, under article 646 of Québec’s Code of Civil Procedure, because the award relied on doctrine and case law that do not exist ([1] to [3], [23]).12
The court rejected a separate public order ground ([55], [64] to [66]) but upheld the procedure ground. The court said that parties who choose an arbitrator are entitled to a decision by that arbitrator, so the decision cannot be delegated to anyone else ([75], [81] to [86]). The rule does not stop the use of researchers, clerks or help with translation or citations. But anyone else’s part in the drafting must not undermine the integrity of the process, and responsibility for the drafting must stay with the arbitrator, so no one could think a third party had taken over the writing of the reasons ([87]).1
On the evidence, the court found that every doctrinal and case-law reference the award relied on either did not exist or did not support the point cited ([102] to [113]). It concluded that the arbitrator’s authority had been delegated ([114] to [116]), annulled the award and ordered the parties to choose a new arbitrator within 60 days ([122] to [124]).1
On AI itself, the court accepted the defendant’s point that AI use is not one of the grounds listed in article 646, but said that did not settle the question ([69]). It said nothing is inherently wrong with using a reliable AI tool, but that lawyers and parties must check what they file ([94]), and that the pitfalls are greater still for decision-makers ([95]).1
The court also set limits on its ruling. It said that not every award that cites wrong authorities or uses AI as a drafting tool should be annulled. Minimal use, or use on a minor issue, may lead to a different result ([117], [118]).1
What the US court did not decide
In LaPaglia v. Valve Corporation, a consumer asked a federal court in California to vacate an AAA award under section 10 of the Federal Arbitration Act. One of the grounds was that the arbitrator had exceeded their powers by outsourcing the decision to AI. The petition relied on a remark the arbitrator was said to have made about using ChatGPT for an unrelated article, and on the speed and content of the award.34
On 9 December 2025 the court dismissed the amended petition for lack of subject-matter jurisdiction. The petition did not arise under federal law, and an award of zero dollars did not meet the amount in controversy for diversity jurisdiction (Order, pp. 7 to 12). The court never reached the AI argument, so the case decides nothing about whether AI use can justify vacating an award.3
The cases side by side
| Case | Court and date | What was alleged | What was decided | What was not decided |
|---|---|---|---|---|
| ARIHQ c. Santé Québec, 2026 QCCS 1360 | Superior Court of Québec, 22 April 2026 | The award relied on authorities that do not exist, which suggested it was drafted with AI | Award annulled because the arbitrator’s authority had been delegated | Which AI tool, if any, was used, and whether minimal use would justify annulment |
| LaPaglia v. Valve Corporation | US District Court, Southern District of California, 9 December 2025 | Among other grounds, the arbitrator outsourced the decision to AI | Petition dismissed for lack of jurisdiction | Anything about AI use or the merits of vacatur |
| [2025] EWHC 1383 (Admin) | High Court of England and Wales, Divisional Court, 6 June 2025 | Lawyers put citations before the court that do not exist | Lawyers must check AI research against authoritative sources, and three lawyers were referred to their regulators | Anything about arbitration or awards |
Context from England: false citations in court filings
R (Ayinde) v London Borough of Haringey and Al-Haroun v Qatar National Bank, [2025] EWHC 1383 (Admin), is not an arbitration case. The Divisional Court dealt with two unrelated cases in which lawyers put citations before the court that did not exist, 18 of 45 citations in one of them. It held that lawyers who use AI for legal research must check it against authoritative sources before relying on it. Putting false citations before the court can lead to sanctions, from a public admonition or costs orders up to referral to a regulator, contempt proceedings or referral to the police ([7] to [9], [23] to [31]).5
It is included because it shows how courts treat unchecked AI output in general. It says nothing about arbitrators or awards.
What the institutions’ rules say about the same risk
The published guidance points the same way as the Québec judgment. SVAMC’s Guideline 6, the SCC guide and the VIAC note each say that an arbitrator must not hand the decision to an AI tool, and Ciarb’s guideline says an arbitrator’s own use of AI should not replace their judgement. The AI rules tracker sets out what each text says, including on disclosing AI use.6789
What is not settled yet
- Whether the Québec judgment will be challenged further. When we checked CanLII on 21 October 2026, it listed no later decision in the case.
- How much AI use is too much. The Québec court left open how it would treat minimal use, or use on a minor issue ([117], [118]).
- How the analysis would run under an appeal or judicial review standard, which the Québec court also left open ([119]).
- Whether a US court would vacate an award on this ground. The one US challenge we found ended without a ruling on it.13