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Pinterest Search¶
Definition¶
Search (SR) is Pinterest's search product surface where users query for Pins by keyword and see both organic results and ads. One of three Pinterest ads surfaces (with Home Feed and Related Pins), each with distinct user intent, feature availability, and serving cost profile.
Role in the unified ads engagement model¶
Search is one of the three surfaces that previously had its own dedicated CTR-prediction model and was unified with Home Feed as the first pair in Pinterest's staged model unification (Source: sources/2026-03-03-pinterest-unifying-ads-engagement-modeling-across-pinterest-surfaces). SR + HF were paired because of their similar CUDA throughput characteristics.
In the unified Pinterest Ads Engagement Model, Search has:
- Its own tower tree plus surface-specific modules.
- Its own view-type-specific calibration — SR traffic calibrated separately from HF traffic.
- Its own surface-specific checkpoint export from the joint training run.
Caveats¶
- Stub — Search's full architecture (query understanding, retrieval, organic ranking beyond ads) is not ingested. This page is bounded to Search's role as an ads surface in the 2026-03-03 engagement-modeling post.
- User intent distinction — search has an explicit-query signal that Home Feed doesn't; the post doesn't enumerate which features are SR-only vs shared.
Seen in¶
- 2026-03-03 Pinterest — Unifying Ads Engagement Modeling (sources/2026-03-03-pinterest-unifying-ads-engagement-modeling-across-pinterest-surfaces) — canonical; names SR as one of three ads surfaces, paired with HF for first-phase unification.