One Developer UID Per Participant

No single participant or team shall submit models on more than one Developer UID.

Submission Limits

You may have maximum 2 concurrent submissions deployed at any given time.

Competition Timeline

Competition Timeline dates (including Entry Deadline, Final Submission Deadline, Start Date, as applicable) are reflected on the #prize-format in the competition discord.

Competition Evaluation Metric

The #prize-rules in the competition discord is where information will be available on the metric used. The Competition Sponsor may adjust the evaluation metric mid-season if a majority consensus is reached with Competition Participants.



COMPETITION SPONSOR ADDRESS: 228 Hamilton Ave, Office 323, Palo Alto, CA 94301


COMPETITION WEBSITE: All Competition Sponsor websites, applications, databases, and web services.  

COMPETITION PARTICIPANT: Any individual or team making a submission in accordance with the General Competition Rules, Competition-Specific Rules, and any other rules as outlined in this EULA.

The total prizes available for any given round of the competition are reflected on the #prize-format channel in the competition discord. This may be subject to change at any time.

SUBMISSION LICENSE TYPE: Non-exclusive license

DATA ACCESS AND USE: Competition Use Only

Competitions are open to residents of the United States and worldwide, except that if you are a resident of Crimea, so-called Donetsk People's Republic (DNR) or Luhansk People's Republic (LNR), Cuba, Iran, Syria, North Korea, or Sudan, or are subject to U.S. export controls or sanctions, you may not enter the Competition. Other local rules and regulations may apply to you, so please check your local laws to ensure that you are eligible to participate in skills-based competitions. The Competition Sponsor reserves the right to award alternative Prizes where needed to comply with local laws.


The Competition named above is a skills-based competition to promote and further the field of data science. You must register via the Competition Discord to enter. Your competition submissions ("Submissions") must conform to the requirements stated on the Competition Discord. Your Submissions will be scored based on the evaluation metric described on the Competition Discord. Subject to compliance with the Competition Rules, Prizes, if any, will be awarded to participants with the best scores, based on the merits of the data science models submitted. See below for the complete Competition Rules.


In addition to the provisions of the General Competition Rules below, you understand and agree to these Competition-Specific Rules required by the Competition Sponsor:


You hereby grant and will grant Competition Sponsor the following license(s) with respect to your Submission, regardless if you are a Competition winner or not:

Non-Exclusive: You hereby grant and will grant to Competition Sponsor and its designees (including its affiliates) a worldwide, non-exclusive, sub-licensable, transferable, fully paid-up, royalty-free, perpetual, irrevocable right to use, reproduce, distribute, create derivative works of, publicly perform, publicly display, digitally perform, make, have made, sell, offer for sale and import your winning Submission and the source code used to generate the Submission, in any media now known or developed in the future, for any purpose whatsoever, commercial or otherwise, without further approval by or payment to you. To the extent your Submission makes use of generally commercially available software not owned by you that you used to generate your Submission, but that can be procured by the Competition Sponsor without undue expense, you do not grant the license in the preceding sentence to that software, however you must identify any such software required for use of your Submission.

By entering and participating in the Competition you warrant that your Submission, and the source code used to generate your submission, is your own original work, or is used by permission.

You represent, warrant and agree that you will not contribute any Submission (or accompanying material) or otherwise interact with the Competition in a manner that:



To enter the Competition, you must agree to these Official Competition Rules, which incorporate by reference the provisions and content of the Competition Discord and any Specific Competition Rules above (collectively, the "Rules"). Please read these Rules carefully before entry to ensure you understand and agree. You further agree that submission of an entry in the Competition constitutes agreement to these Rules. You may not submit an entry to the Competition and are not eligible to receive the prizes associated with this Competition (“Prizes”) unless you agree to these Rules. These Rules form a binding legal agreement between you and the Competition Sponsor with respect to the Competition.


A. To be eligible to enter the Competition, you must be:

(i) a member of the Chai Research Corp. (“Chai”) Competition Discord

(ii) the older of 18 years old or the age of majority in your jurisdiction of residence (unless you have obtained appropriate parental/guardian consents);

(iii) not a resident of of Crimea, so-called Donetsk People's Republic (DNR) or Luhansk People's Republic (LNR), Cuba, Iran, Syria, North Korea,  or Sudan; and

(iv) not a person or representative of an entity under U.S. export controls or sanctions (see

If you are entering as a representative of a company, educational institution or other legal entity, or on behalf of your employer, these rules are binding on you, individually, and the entity you represent or are an employee. If you are acting within the scope of your employment, as an employee, contractor, or agent of another party, you warrant that such party has full knowledge of your actions and has consented thereto, including your potential receipt of a Prize. You further warrant that your actions do not violate your employer's or entity's policies and procedures.

Competition Sponsor reserves the right to verify eligibility and to adjudicate on any dispute at any time. If you provide any false information relating to the Competition concerning your identity, residency, mailing address, telephone number, email address, ownership of right, or information required for entering the Competition, you may be immediately disqualified from the Competition.

B. Unless otherwise stated in the Specific Competition Rules above or prohibited by internal policies of the Competition Entities, employees, interns, contractors, officers and directors of Competition Entities may enter and participate in the Competition, but are not eligible to win any Prizes. "Competition Entities" means Chai Research Corp., and its respective parent companies, subsidiaries and affiliates. If you are such a participant from a Competition Entity, you are subject to all applicable internal policies of your employer with respect to your participation.


The Competition is sponsored and hosted by Chai Research Corp.


For the purposes of Prizes, the Competition will run from the Start Date and time to the End Date and time (such duration the “Competition Period”) as outlined in the Competition Discord. The Competition Timeline is subject to change, and Chai may introduce additional hurdle deadlines during the Competition Period. Any updated or additional deadlines will be publicized on the Competition Discord. It is your responsibility to check the Competition Discord regularly to stay informed of any deadline changes. YOU ARE RESPONSIBLE FOR DETERMINING THE CORRESPONDING TIME ZONE IN YOUR LOCATION.


NO PURCHASE NECESSARY TO ENTER OR WIN. To enter the Competition, you must register on the Competition Discord prior to the Entry Deadline, and follow the instructions for developing and entering your Submission through the Competition Discord. Your Submissions must be made in the manner and format, and in compliance with all other requirements, stated on the Competition Discord (the "Requirements"). Submissions must be received before any Submission deadlines stated on the Competition Discord. Submissions not received by the stated deadlines will not be eligible to receive a Prize.

If the Competition is a multi-stage competition with temporally separate training and/or test data, one or more valid Submissions may be required during each Competition stage in the manner described on the Competition Discord in order for the Submissions to be Prize eligible.

Submissions are void if they are in whole or part illegible, incomplete, damaged, altered, counterfeit, obtained through fraud, or late. The Competition Sponsor reserves the right to disqualify any entrant who does not follow these Rules, including making a Submission that does not meet the Requirements.


A. Individual Account. You may make Submissions only under one, unique Chai Developer User ID. You will be disqualified if you make Submissions through more than one Chai Developer User ID, or attempt to falsify an account to act as your proxy. You may submit up to the maximum number of Submissions per day as specified on the Competition Discord.

B. Teams. If permitted under the Competition Discord guidelines, multiple individuals may collaborate as a team (a "Team"); however, you may join or form only one Team. Teams must use one, unique, Chai Developer User ID. Team members must not submit individually or as a part of multiple teams.


"Competition Data" means the data or datasets available from the Competition Discord for the purpose of use in the Competition, including any prototype or executable code provided on the Competition Discord.

A. Data Access and Use.

Competition Use and Non-Commercial use is checked: You may access and use the Competition Data for non-commercial purposes only, including for participating in the Competition and on the Chai Research Discord. Competition Sponsor reserves the right to disqualify any participant who uses the Competition Data other than as permitted by the Competition Discord and these Rules.

B. Data Security. You agree to use reasonable and suitable measures to prevent persons who have not formally agreed to these Rules from gaining access to the Competition Data. You agree not to transmit, duplicate, publish, redistribute or otherwise provide or make available the Competition Data to any party not participating in the Competition. You agree to notify the Competition Sponsor immediately upon learning of any possible unauthorized transmission of or unauthorized access to the Competition Data and agree to work with Chai to rectify any unauthorized transmission or access.

C. External Data. You may use data other than the Competition Data (“External Data”) to develop and test your Submissions. However, you will ensure the External Data is publicly available to use by all participants of the Competition for purposes of the competition at no cost to the other participants. The ability to use External Data under this Section 7.C (External Data) does not limit your other obligations under these Competition Rules, including but not limited to Section 11 (Submitter Obligations).


A. Private Code Sharing. Unless otherwise specifically permitted under the Competition Discord or Competition Specific Rules above, during the Competition Period, you are not allowed to privately share source or executable code developed in connection with or based upon the Competition Data or other source or executable code relevant to the Competition (“Competition Code”). This prohibition includes sharing Competition Code between separate Teams. Any such sharing of Competition Code is a breach of these Competition Rules and may result in disqualification.

B. Public Code Sharing. You are permitted to publicly share Competition Code, provided that such public sharing does not violate the intellectual property rights of any third party. By so sharing, you are deemed to have licensed the shared code under an Open Source Initiative-approved license (see that in no event limits commercial use of such Competition Code or model containing or depending on such Competition Code.

C. Use of Open Source. Unless otherwise stated in the Specific Competition Rules above, if open source code is used in the model to generate the Submission, then you must only use open source code licensed under an Open Source Initiative-approved license (see that in no event limits commercial use of such code or model containing or depending on such code. Appropriate licenses must be included with your code as required by each open source license.


Each Submission will be scored and ranked by the evaluation metric stated on the Competition Discord. During the Competition Period, the current ranking will be visible on the Competition Discord’s public leaderboard. The public leaderboard will be based on the evaluation metric. In the event of a tie, the Submission that was entered first to the Competition will be ranked higher.


The potential winner(s) will be notified by Discord.

If a potential winner (i) does not respond to the notification attempt within one (1) week from the first notification attempt or (ii) notifies the Competition Sponsor within one week after the Final Submission Deadline that the potential winner does not want to be nominated as a winner or does not want to receive a Prize, then, in each case (i) and (ii) such potential winner will not receive any Prize, and an alternate potential winner will be selected from among all eligible entries received based on the Competition’s judging criteria.

In case (i) and (ii) above the Competition Sponsor may disqualify the participant. However, in case (ii) above, if requested by the Competition Sponsor, such potential winner may provide code and documentation to verify the participant’s compliance with these Rules. If the potential winner provides code and documentation to the satisfaction of the Competition Sponsor, the participant will not be disqualified pursuant to this paragraph.

Competition Sponsor reserves the right to disqualify any participant from the Competition if the Competition Sponsor reasonably believes that the participant has attempted to undermine the legitimate operation of the Competition by cheating, deception, metric hacking, or other unfair playing practices or abuses, threatens or harasses any other participants, or Competition Sponsor.

A disqualified participant may be removed from the Competition leaderboard, at Competition Sponsor’s sole discretion.

The final leaderboard list will be displayed on the Competition Discord. Determinations of Competition Sponsor are final and binding.


As a condition to being awarded a Prize, a Prize winner must fulfill the following obligations:

(A) deliver to the Competition Sponsor the final model's software code as used to generate the winning Submission and associated documentation. The delivered software code should be capable of generating the winning Submission, and contain a description of resources required to build and/or run the executable code successfully. To the extent that the final model’s software code includes generally commercially available software that is not owned by you, but that can be procured by the Competition Sponsor without undue expense, then instead of delivering the code for that software to the Competition Sponsor, you must identify that software, method for procuring it, and any parameters or other information necessary to replicate the winning Submission;

(B) grant to the Competition Sponsor the license to the winning Submission stated in the Competition Specific Rules above, and represent that you have the unrestricted right to grant that license;

(C) sign and return all Prize acceptance documents as may be required by Competition Sponsor, including without limitation: (i) eligibility certifications; (ii) licenses, releases and other agreements required under the Rules; and (iii) U.S. tax forms (such as IRS Form W-9 if U.S. resident, IRS Form W-8BEN if foreign resident, or future equivalents).


Prize(s) are as described in the Competition-Specific Terms and are only available for winning during the time period described on the Competition Discord. The odds of winning any Prize depends on the number of eligible Submissions received during the Competition Period and the skill of the participants.

All Prizes are subject to Competition Sponsor's review and verification of the participant’s eligibility and compliance with these Rules, and the compliance of the winning Submissions with the Submissions Requirements. In the event that the Submission demonstrates non-compliance with these Competition Rules, Competition Sponsor may at its discretion take either of the following actions: (i) disqualify the Submission(s); or (ii) require the potential winner to remediate within one week after notice all issues identified in the Submission(s) (including, without limitation, the resolution of license conflicts, the fulfillment of all obligations required by software licenses, and the removal of any software that violates the software restrictions).

A potential winner may decline to be nominated as a Competition winner in accordance with Section 10.

Potential winners must return all required Prize acceptance documents within two (2) weeks following notification of such required documents, or such potential winner will be deemed to have forfeited the prize and another potential winner will be selected. Prize(s) will be awarded within approximately 30 days after receipt by Competition Sponsor of the required Prize acceptance documents. Transfer or assignment of a Prize is not allowed.

You are not eligible to receive any Prize if you do not meet the Eligibility requirements in Section 2 above.

If a Team wins a monetary Prize, the Prize money will be allocated in even shares between the eligible Team members, unless the Team unanimously opts for a different Prize split and notifies Competition Sponsor before Prizes are issued.

13. TAXES.

ALL TAXES IMPOSED ON PRIZES ARE THE SOLE RESPONSIBILITY OF THE WINNERS. Payments to potential winners are subject to the express requirement that they submit all documentation requested by Competition Sponsor for compliance with applicable state, federal, local and foreign (including provincial) tax reporting and withholding requirements. Prizes will be net of any taxes that Competition Sponsor is required by law to withhold. If a potential winner fails to provide any required documentation or comply with applicable laws, the Prize may be forfeited and Competition Sponsor may select an alternative potential winner. Any winners who are U.S. residents will receive an IRS Form-1099 in the amount of their Prize.


All federal, state, provincial and local laws and regulations apply.


You agree that Competition Sponsor and its affiliates may use your name and likeness for advertising and promotional purposes without additional compensation, unless prohibited by law.


You acknowledge and agree that Competition Sponsor may collect, store, share and otherwise use personally identifiable information provided by you during the the Competition, including but not limited to, name, mailing address, phone number, and email address (“Personal Information”). Competition Sponsor acts as an independent controller with regard to its collection, storage, sharing, and other use of this Personal Information, and will use this Personal Information in accordance with its Privacy Policy <>, including for administering the Competition.


You warrant that your Submission is your own original work and, as such, you are the sole and exclusive owner and rights holder of the Submission, and you have the right to make the Submission and grant all required licenses. You agree not to make any Submission that: (i) infringes any third party proprietary rights, intellectual property rights, industrial property rights, personal or moral rights or any other rights, including without limitation, copyright, trademark, patent, trade secret, privacy, publicity or confidentiality obligations, or defames any person; or (ii) otherwise violates any applicable U.S. or foreign state or federal law.

To the maximum extent permitted by law, you indemnify and agree to keep indemnified Competition Entities at all times from and against any liability, claims, demands, losses, damages, costs and expenses resulting from any of your acts, defaults or omissions and/or a breach of any warranty set forth herein. To the maximum extent permitted by law, you agree to defend, indemnify and hold harmless the Competition Entities from and against any and all claims, actions, suits or proceedings, as well as any and all losses, liabilities, damages, costs and expenses (including reasonable attorneys fees) arising out of or accruing from: (a) your Submission or other material uploaded or otherwise provided by you that infringes any third party proprietary rights, intellectual property rights, industrial property rights, personal or moral rights or any other rights, including without limitation, copyright, trademark, patent, trade secret, privacy, publicity or confidentiality obligations, or defames any person; (b) any misrepresentation made by you in connection with the Competition; (c) any non-compliance by you with these Rules or any applicable U.S. or foreign state or federal law; (d) claims brought by persons or entities other than the parties to these Rules arising from or related to your involvement with the Competition; and (e) your acceptance, possession, misuse or use of any Prize, or your participation in the Competition and any Competition-related activity.

You hereby release Competition Entities from any liability associated with: (a) any malfunction or other problem with the Competition Website; (b) any error in the collection, processing, or retention of any Submission; or (c) any typographical or other error in the printing, offering or announcement of any Prize or winners.


Competition Entities are not responsible for any malfunction of the Competition Website or any late, lost, damaged, misdirected, incomplete, illegible, undeliverable, or destroyed Submissions or entry materials due to system errors, failed, incomplete or garbled computer or other telecommunication transmission malfunctions, hardware or software failures of any kind, lost or unavailable network connections, typographical or system/human errors and failures, technical malfunction(s) of any telephone network or lines, cable connections, satellite transmissions, servers or providers, or computer equipment, traffic congestion on the Internet or at the Competition Website, or any combination thereof, which may limit a participant’s ability to participate.


If for any reason the Competition is not capable of running as planned, including infection by computer virus, bugs, tampering, unauthorized intervention, fraud, technical failures, or any other causes which corrupt or affect the administration, security, fairness, integrity, or proper conduct of the Competition, Competition Sponsor reserves the right to cancel, terminate, modify or suspend the Competition. Competition Sponsor further reserves the right to disqualify any participant who tampers with the submission process or any other part of the Competition or Competition Website. Any attempt by a participant to deliberately damage any website, including the Competition Website, or undermine the legitimate operation of the Competition is a violation of criminal and civil laws. Should such an attempt be made, Competition Entities each reserves the right to seek damages from any such participant to the fullest extent of the applicable law.


Under no circumstances will the entry of a Submission, the awarding of a Prize, or anything in these Rules be construed as an offer or contract of employment with Competition Sponsor or any of the Competition Entities. You acknowledge that you have submitted your Submission voluntarily and not in confidence or in trust. You acknowledge that no confidential, fiduciary, agency, employment or other similar relationship is created between you and Competition Sponsor or any of the Competition Entities by your acceptance of these Rules or your entry of your Submission.


Unless otherwise provided in the Competition Specific Rules above, all claims arising out of or relating to these Rules will be governed by California law, excluding its conflict of laws rules, and will be litigated exclusively in the Federal or State courts of Santa Clara County, California, USA. The parties consent to personal jurisdiction in those courts. If any provision of these Rules is held to be invalid or unenforceable, all remaining provisions of the Rules will remain in full force and effect.