Beyond Two Towers: Launching the 3-Tower Engagement Co-Train Model (Part 2)
Authors: Longyu Zhao (Staff Machine Learning Engineer), Gwendolyn Zhao (Staff Machine Learning Engineer), Peng Yan (Senior Machine Learning Engineer), Yuanlu.
By Dillip Chowdary • Sep 17, 2026 • Source: Pinterest Engineering
Beyond Two Towers: the announcement
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Pinterest Engineering reports: Beyond Two Towers: Launching the 3-Tower Engagement Co-Train Model (Part 2). Authors: Longyu Zhao (Staff Machine Learning Engineer), Gwendolyn Zhao (Staff Machine Learning Engineer), Peng Yan (Senior Machine Learning Engineer), Yuanlu Bai (Senior Machine Learning Engineer), Yuan Wang (Senior Machine Learning Engineer), Yao Cheng (Staff Machine Learning Engineer), Ang Xu (Principal Machine…
Who should care about Beyond Two Towers
For primary quotes and complete technical detail, see Pinterest Engineering's original report linked above.
Developer Action Items
- ☐ Verify the claim on the official Beyond Two Towers Launching page (or Pinterest Engineering), not from this recap alone.
- ☐ Name the surface that moved — API, policy, model, hardware, or commercial terms — before you Slack the thread.
- ☐ Assign one owner a day to read the primary material and decide: this-sprint, this-quarter, or noise.
- ☐ Do not change production on day-one coverage. Watch the vendor changelog and one independent write-up first.
Author
Dillip Chowdary
Writes Tech Bytes coverage of AI, engineering, and the tools that actually ship. Editor of Tech Pulse Daily.
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