Case: xAI v. Weiser

1:26-cv-01515 | U.S. District Court for the District of Colorado

Filed Date: April 9, 2026

Case Ongoing

Clearinghouse coding in progress

Case Summary

(This summary is temporary while we research the case.) xAI LLC, a Nevada company headquartered in Palo Alto that develops AI models including the Grok large language model, filed suit against Colorado Attorney General Philip J. Weiser on April 9, 2026, in the U.S. District Court for the District of Colorado. The company challenged Colorado's Senate Bill 24-205 (SB 24-205), which regulates "algorithmic discrimination," alleging that the law severely burdens AI development and forces developers …

(This summary is temporary while we research the case.)

xAI LLC, a Nevada company headquartered in Palo Alto that develops AI models including the Grok large language model, filed suit against Colorado Attorney General Philip J. Weiser on April 9, 2026, in the U.S. District Court for the District of Colorado. The company challenged Colorado's Senate Bill 24-205 (SB 24-205), which regulates "algorithmic discrimination," alleging that the law severely burdens AI development and forces developers to abandon objective truth-seeking in favor of promoting Colorado's ideological views on controversial topics like racial justice. The complaint argued that while the law defines algorithmic discrimination as differential treatment disfavoring individuals based on protected characteristics, it expressly exempts discrimination intended to "increase diversity or redress historical discrimination," creating what Plaintiff characterized as codified discrimination. Plaintiff brought six constitutional claims under the First Amendment, Commerce Clause, Due Process Clause, and Equal Protection Clause, seeking declaratory and injunctive relief to prevent enforcement of the statute against the company.

This case is ongoing.

People

For PACER's information on parties and their attorneys, see: https://www.courtlistener.com/docket/73171074/parties/x-ai-llc-v-weiser/


Judge(s)

Domenico, Daniel Desmond (Colorado)

Attorney for Plaintiff

Gieseke, Greta (Colorado)

Hauptman, William Daniel (Colorado)

Attorney for Defendant

Field, Katherine M. (Colorado)

Kelly, Heather K. (Colorado)

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Documents in the Clearinghouse

Document
1

1:26-cv-01515

Complaint for Declaratory and Injunctive Relief

x.AI v. Weiser

April 9, 2026

April 9, 2026

Complaint
17

1:26-cv-01515

United States of America's Complaint in Intervention

United States of America v. Weiser

April 24, 2026

April 24, 2026

Complaint

Docket

See docket on RECAP: https://www.courtlistener.com/docket/73171074/x-ai-llc-v-weiser/

Last updated April 27, 2026, 2:52 a.m.

ECF Number Description Date Link Date / Link
1

COMPLAINT against PHILIP J. WEISER (Filing fee $ 405,Receipt Number ACODC-10938481)Attorney Frederick Richard Yarger added to party X. AI LLC(pty:pla), filed by X. AI LLC.(Yarger, Frederick) (Entered: 04/09/2026)

April 9, 2026

April 9, 2026

Clearinghouse
2

NOTICE Civil Cover Sheet by Plaintiff X. AI LLC (Hauptman, William) (Entered: 04/09/2026)

April 9, 2026

April 9, 2026

3

SUMMONS REQUEST as to Attorney General Philip J. Weiser re 1 Complaint, 2 Notice (Other) by Plaintiff X. AI LLC. (Hauptman, William) (Entered: 04/09/2026)

April 9, 2026

April 9, 2026

4

Case assigned to Magistrate Judge Cyrus Y. Chung. Text Only Entry. (agarc, ) (Entered: 04/10/2026)

April 9, 2026

April 9, 2026

5

SUMMONS issued by Clerk. (Attachments: # 1 Magistrate Judge Consent Form) (agarc, ) (Entered: 04/10/2026)

April 10, 2026

April 10, 2026

6

WAIVER OF SERVICE Returned Executed by X. AI LLC. Philip J. Weiser waiver sent on 4/13/2026, answer due 6/12/2026. (Hauptman, William) (Entered: 04/13/2026)

April 13, 2026

April 13, 2026

7

MINUTE ORDER: The Parties shall complete and file the Magistrate Judge Consent Form, ECF No. 5-1, on or before June 2, 2026. It is further ORDERED that the Fed. R. Civ. P. 16(b) Scheduling Conference will be held before this Court on June 16, 2026 at 10:30 a.m. in Courtroom C-201, on the second floor of the Byron G. Rogers United States Courthouse located at 1929 Stout Street, Denver, Colorado. It is further ORDERED that Plaintiff shall notify all Parties who have not entered an appearance of the date and time of the Scheduling Conference. The Parties shall file the proposed Scheduling Order with the Clerk's Office, and in accordance with District of Colorado Electronic Case Filing ("ECF") Procedures, no later than seven days prior to the scheduling conference. The proposed Scheduling Order is also to be submitted in Word format by email to Magistrate Judge Chung at Chung_Chambers@cod.uscourts.gov. Entered by Magistrate Judge Cyrus Y. Chung on 04/13/2026. (agryan) (Entered: 04/13/2026)

April 13, 2026

April 13, 2026

RECAP
8

CONSENT to Jurisdiction of Magistrate Judge by Plaintiff X. AI LLC All parties do not consent.. (Hauptman, William) (Entered: 04/14/2026)

April 14, 2026

April 14, 2026

9

CASE REASSIGNED Pursuant to 8 Consent to Jurisdiction of Magistrate Judge. All parties do not consent, therefore, this case is randomly reassigned to Chief Judge Daniel D. Domenico and drawn to Magistrate Judge Cyrus Y. Chung for all future proceedings. All future pleadings should be designated as 26-cv-01515-DDD. (Text Only Entry) (echa, ) (Entered: 04/14/2026)

April 14, 2026

April 14, 2026

10

ORDER REFERRING CASE to Magistrate Judge Cyrus Y. Chung. Pursuant to 28 U.S.C. § 636(b)(1)(A) and (B) and Fed. R. Civ. P. 72(a) and (b), this case is referred to the assigned United States Magistrate Judge to (1) convene a scheduling conference under Fed. R. Civ. P. 16(b) and enter a scheduling order meeting the requirements of Local Civ. R. 16.2, (2) conduct such status conferences and issue such orders necessary for compliance with the scheduling order, including amendments or modifications of the scheduling order upon a showing of good cause, (3) hear and determine pretrial matters, including discovery and other non-dispositive motions, (4) conduct hearings, including evidentiary hearings, and submit proposed findings of fact and recommendations for rulings on dispositive motions, and (5) pursuant to Local Civ. R. 16.6 and at the discretion of the Magistrate Judge, convene such early neutral evaluation and/or settlement conferences and direct related procedures as may facilitate resolution of this case without the necessity of a motion or prior authorization of the undersigned. SO ORDERED by Chief Judge Daniel D. Domenico on 4/14/2026. Text Only Entry. (rkeec) (Entered: 04/14/2026)

April 14, 2026

April 14, 2026

Order Referring Case to Magistrate Judge

April 14, 2026

April 14, 2026

11

Minute Order: This matter is before the Court sua sponte. The Scheduling Conference set for 6/16/2026 at 10:30 a.m is hereby RESET to 6/16/2026 at 10:45 a.m. This is a change in time only. Entered by Magistrate Judge Cyrus Y. Chung on 4/16/2026. Text Only Entry (spric) (Entered: 04/16/2026)

April 16, 2026

April 16, 2026

Minute Order

April 16, 2026

April 16, 2026

12

Unopposed MOTION to Intervene as Plaintiff by Intervenor Plaintiff United States. (Attachments: # 1 Exhibit A - Certificate of Acting Attorney General, # 2 Exhibit B - Complaint in Intervention)(Gieseke, Greta) (Entered: 04/24/2026)

1 Exhibit A - Certificate of Acting Attorney General

View on PACER

2 Exhibit B - Complaint in Intervention

View on PACER

April 24, 2026

April 24, 2026

RECAP
13

NOTICE of Entry of Appearance by Heather K. Kelly on behalf of Philip J. WeiserAttorney Heather K. Kelly added to party Philip J. Weiser(pty:dft) (Kelly, Heather) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

14

AFFIDAVIT/RETURN of Service of United States' Unopposed Motion to Intervene as Plaintiff (Dkt. 12) upon Defendant Philip J. Weiser, Colorado Attorney General on April 24, 2026, filed by Intervenor Plaintiff United States (Gieseke, Greta) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

15

NOTICE of Entry of Appearance by Eric Arthur Sell on behalf of United StatesAttorney Eric Arthur Sell added to party United States(pty:intvp) (Sell, Eric) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

16

ORDER granting 12 United States of Americas Unopposed Motion to Intervene. "On timely motion, the court must permit anyone to intervene whois given an unconditional right to intervene by a federal statute." Fed. R. Civ. P. 24(a)(1). The Civil Rights Act of 1964 gives the United States an unconditional right to intervene in Equal Protection cases if the Attorney General certifies that it is a case of general public importance. See 42 U.S.C. § 2000h-2. X.AI LLC brings an Equal Protection claim and the Acting Attorney General has certified that this case is of general public importance. Doc. 1 187-201; Doc. 12-1. The unopposed motion is also timely, filed fifteen days after X.AI LLC initiated this suit. Compare Doc. 12, with Doc. 1 . The Defendant, the Colorado Attorney General, entered an appearance today and the scheduling conference is set for nearly two months from now. Docs. 11, 13 . The motion is GRANTED. The Clerk is directed to AMEND the caption to include the United States of America and DOCKET the United States of Americas Complaint in Intervention, Doc. 12-2, as a separate docket entry.SO ORDERED by Chief Judge Daniel D. Domenico on 04/24/2026. Text Only Entry.(agryan) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

17

UNITED STATES OF AMERICA'S COMPLAINT in Intervention, filed by United States. [Docketed pursuant to 16 Order](agryan) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

Clearinghouse
18

Joint MOTION to Vacate Scheduling Conference and Suspend Case Deadlines and Stipulation to Temporarily Stay Enforcement by Plaintiff X. AI LLC. (Attachments: # 1 Proposed Order (PDF Only) Order Granting Joint Motion to Vacate Scheduling Conference and Suspend Case Deadlines and Stipulation to Temporarily Stay Enforcement)(Hauptman, William) (Entered: 04/24/2026)

1 Proposed Order (PDF Only) Order Granting Joint Motion to Vacate Scheduling Confe

View on RECAP

April 24, 2026

April 24, 2026

RECAP
19

NOTICE of Entry of Appearance by Katherine M. Field on behalf of Philip J. WeiserAttorney Katherine M. Field added to party Philip J. Weiser(pty:dft) (Field, Katherine) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

20

ORDER REFERRING MOTION(S): 18 Joint MOTION to Vacate Scheduling Conference and Suspend Case Deadlines and Stipulation to Temporarily Stay Enforcement filed by X. AI LLC.Motions referred to Magistrate Judge Cyrus Y. Chung. SO ORDERED by Chief Judge Daniel D. Domenico on 04/24/2026. Text Only Entry. (agryan) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

21

NOTICE of Entry of Appearance by Joshua R. Zuckerman on behalf of United StatesAttorney Joshua R. Zuckerman added to party United States(pty:intvp) (Zuckerman, Joshua) (Entered: 04/24/2026)

April 24, 2026

April 24, 2026

22

Joint MOTION to Vacate Scheduling Conference and Suspend Case Deadlines and Stipulation to Temporarily Stay Enforcement by Intervenor Plaintiff United States. (Attachments: # 1 Proposed Order (PDF Only))(Gieseke, Greta) (Entered: 04/24/2026)

1 Proposed Order (PDF Only)

View on PACER

April 24, 2026

April 24, 2026

RECAP

Order on Motion to Intervene

April 24, 2026

April 24, 2026

Order Referring Motion

April 24, 2026

April 24, 2026

Case Details

State / Territory:

Colorado

Case Type(s):

Public Accommodations/ Contracting/ Organizational Discrimination

Special Collection(s):

Trump Administration 2.0: Litigation and Investigations Involving the Government

Key Dates

Filing Date: April 9, 2026

Case Ongoing: Yes

Case Details

Other Dockets:

District of Colorado 1:26-cv-01515

Available Documents:

Complaint (any)

Trial Court Docket

Recommended Citation