GraphQL vs REST: 18 Claims Fact-Checked with Primary Sources (2026)

A fact-checking analysis of 18 commonly repeated claims about GraphQL vs REST, traced back to primary sources including peer-reviewed studies, official documentation, and security reports. Key findings: GraphQL was not built for microservices (Facebook ran a PHP monolith); the N+1 problem exists in both REST and GraphQL but at different layers; GraphQL's HTTP caching limitation is real but addressable via persisted queries; performance benchmarks show mixed results depending on workload; and only 3 of 18 claims held up fully under scrutiny. The author, who runs a GraphQL infrastructure company, concludes that REST and GraphQL solve different problems and often coexist, with GraphQL Federation emerging as a composition standard for multi-team API architectures.