Semasio is a programmatic advertising platform that builds and activates semantic contextual targeting segments, extends audiences via lookalike semantic modeling from limited seed data, and consolidates ID-based and ID-less activation workflows for programmatic campaigns.
Published Sep 29, 2026
| Starting Price | Not public; likely CPM/contract (Order Form) | Not public; typically enterprise + usage | Often billed as a CPM add-on via platforms; visible in some DSP documentation |
| Best For | Agencies/brands needing combined semantic contextual and audience extension with multi-ID activation | Brands needing integrated suitability plus contextual targeting and verification ecosystem | Buyers wanting standardized contextual categories widely available in DSPs |
| Key Strength | Unified semantic approach; vendor claims of fast contextual recrawl/annotation; audience-to-context extension | Broad verification and suitability footprint with enterprise procurement familiarity | Ubiquity and easy activation when embedded in DSP platforms |
| Key Weakness | Limited public third-party reviews; pricing opacity; independent validation gaps | Can be costly and tied to platform workflows | Taxonomy/category-driven; may offer less custom semantic modeling than specialist vendors |
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