Exhibit 5.2

Loeb & Loeb LLP 2206-19 Jardine House 1 Connaught Place Central Hong Kong Tel     +852.3923.1111 Fax    +852.3923.1100 Email HongKong@loeb.com

樂博律師事務所有限法律責任合夥 香港中環康樂廣場1號 怡和大廈2206-19室 電話   +852.3923.1111 傳真   +852.3923.1100 電郵   HongKong@loeb.com

March 6, 2026

Optimal AI Limited

1008 Toa Payoh North #04-12/14/15

Singapore 318996

Ladies and Gentlemen:

We have acted as counsel to Optimal AI Limited, a Cayman Islands company (the “Company”), in connection with the Registration Statement on Form F-1 (the “Registration Statement”) filed with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Act”), for the registration of (i) 2,500,000 Class A ordinary shares, par value $0.0001 per share (the “Class A Ordinary Shares”) by the Company, (ii) 1,263,000 Class A Ordinary Shares by certain existing shareholders of the Class A Ordinary Sharres , (iii) up to an additional 375,000 Class A Ordinary Shares issuable upon exercise of an over-allotment option granted to R. F. Lafferty & Co., Inc. (the “Underwriter Representative”) by the Company, and (iv) up to 143,750 Class A Ordinary Shares underlying warrants issuable to the Underwriter Representative upon exercise of such warrants (the “Warrants”), pursuant to an Underwriting Agreement to be entered into between the Company and the underwriters named therein (the “Underwriting Agreement”).

We have examined such documents and considered such legal matters as we have deemed necessary and relevant as the basis for the opinion set forth below. With respect to such examination, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as reproduced or certified copies, and the authenticity of the originals of those latter documents. As to questions of fact material to this opinion, we have, to the extent deemed appropriate, relied upon certain representations of certain officers of the Company. Because the agreements governing the Warrants contain provisions stating that they are to be governed by the laws of the State of New York, we are rendering this opinion as to New York law. We are admitted to practice in the State of New York, and we express no opinion as to any matters governed by any law other than the law of the State of New York. In particular, we do not purport to pass on any matter governed by the laws of the Cayman Islands.

Based upon the foregoing, we are of the opinion that the Warrants, when issued in accordance with the terms of the Underwriting Agreement, will constitute the valid and legally binding obligation of the Company, enforceable against it in accordance with its terms.

In addition, the foregoing opinions are qualified to the extent that (a) enforceability may be limited by and be subject to general principles of equity, regardless of whether such enforceability is considered in a proceeding in equity or at law (including, without limitation, concepts of notice and materiality), and by bankruptcy, insolvency, reorganization, moratorium and other similar laws affecting creditors’ and debtors’ rights generally (including, without limitation, any state or federal law in respect of fraudulent transfers); and (b) no opinion is expressed herein as to compliance with or the effect of federal or state securities or blue sky laws.

We hereby consent to the use of this opinion as an exhibit to the Registration Statement, to the use of our name as your U.S. counsel and to all references made to us in the Registration Statement and in the prospectus forming a part thereof. In giving this consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Act, or the rules and regulations promulgated thereunder. 

Very truly yours,

/s/ Loeb & Loeb LLP

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