Gartner Says Lack of Semantics Causes Inaccurate AI Agents and Wasted Spending
Cutting Corners on Data Context and Semantic Foundations Will Increase Costs.
Speaking at the Gartner Data & Analytics Summit in London, Rita Sallam, Distinguished VP Analyst at Gartner, said:
"Agentic AI outcomes depend on context including semantic representations of data. Without context – a clear understanding of the specific relationships and rules within an organization's data – AI agents cannot operate accurately and are far more likely to hallucinate, introduce bias and produce unreliable results."
"Organizations that fail to adopt comprehensive context structures — supported by a robust data layer — will perpetuate data inefficiencies and face heightened financial costs, as well as legal and reputational damage."
Gartner predicts that by 2027, organizations that prioritize semantics in AI-ready data will increase their agentic AI accuracy by up to 80% and reduce costs by up to 60%.
"Context with semantic coherence will become a cost-control and trust strategy, not a nice-to-have."
This message will be familiar to anyone who has attended Connected Data London. The community has been championing exactly this - Relationships, Meaning, and Context in Data - since 2016.
At CDL26 this November, speakers including William Tunstall-Pedoe (founder of the core technology behind Amazon Alexa, now building trustworthy neuro-symbolic AI), Juan Sequeda (Principal Fundamental Researcher, ServiceNow), Malcolm Hawker (CDO, Profisee), and Jessica Talisman (Semantic Architect) will go deep on the very foundations Gartner is now calling non-negotiable.
The 2026 Call for Submissions is open. Topics of special interest include Knowledge Graphs and LLMs, GraphRAG, Agentic AI, Neuro-symbolic AI, Ontologies, and Semantic Technology - the building blocks of the context layer Gartner says organizations can no longer afford to ignore.
If you are working on this, this is your community.
gartner.com/en/newsroom/pres…
#SemanticAI #AgenticAI #KnowledgeGraphs #DataGovernance #OntologyFirst
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Connected Data London 2026 has been announced! 11-12 November, Leonardo Royal Hotel London Tower Bridge
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