By Kritika Lamba and Jaspreet Singh

Feb 13 (Reuters) – Pinterest shares tumbled 21% to their lowest since the 2020 pandemic lows after the image-sharing ‌platform’s weak forecast showed that major advertisers are pulling back spending ‌just as AI tools threaten to upend the market.

The company’s quarterly revenue projection fell short because of ​lower marketing spend by large U.S. retailers grappling with tariff-induced business uncertainty.

Pinterest is also rebuilding its sales teams after company-wide layoffs of under 15% last month that were meant to power its AI pivot but fell flat with investors.

Competition for advertising ‌dollars is also heating up ⁠as OpenAI tests ads in ChatGPT, and Google rolls out features that allow consumers to buy products while looking for AI-powered ⁠answers in search and its Gemini chatbot.

That adds to a crowded field where brands are already favoring established players such as Meta and TikTok, which now exists as ​a separate ​entity in the U.S.

Pinterest’s results were also ​in contrast to the upbeat ‌performances from Snap and Reddit.

“Pinterest is constrained by legacy monetization models amid a rapidly evolving AI landscape,” said Lenny Zephirin, CEO of market research firm Zephirin Group.

The platform “retains some differentiation through visual discovery and shopping-focused ad formats, but these advantages are unlikely to fully offset competitive pressures,” Zephirin added.

If the losses hold, this would ‌be the second straight quarter Pinterest shares ​have fallen more than 20% after its quarterly ​results.

The company is set to lose ​more than $2 billion from its market value of $12.52 billion.

The company ‌trades at 9.49 times the estimates ​of its earnings for ​the next 12 months, compared with 9.42 for Snap, 29.99 for Reddit and 21.41 for Meta.

At least 24 brokerages cut their price targets on ​Pinterest’s stock.

“We’ll probably see ‌AI-powered Pinterest clones from Meta, OpenAI, and Amazon soon,” Bernstein analysts said ​in a note.

(Reporting by Kritika Lamba and Jaspreet Singh in Bengaluru; ​Editing by Maju Samuel and Tasim Zahid)