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API Architecture Comparison 2026: REST vs GraphQL vs tRPC vs gRPC vs WebSocket vs SSE

Choosing the Right API Architecture

REST has been the default for two decades, but the API landscape in 2026 is more nuanced: GraphQL for flexible queries, tRPC for end-to-end type safety, gRPC for service-to-service communication, and WebSocket/SSE for real-time data. Each architecture makes a fundamentally different trade-off between simplicity, efficiency, and flexibility.…