Node.js vs Python—Which offers better performance and scalability for backend in 2025?

Evaluates concurrency, throughput, latency, and architectural suitability of Node.js vs Python.

• Node.js leads in real-time, I/O-bound performance: ~90,000 requests/sec with latency ~31 ms, thanks to its event-driven, non-blocking V8 engine. • Python, although slower, excels in AI/ML, data pipelines, and rapid prototyping using frameworks like FastAPI and async libraries. It can scale with multiprocessing and async strategies. Tags: nodejs, python, backend, performance, scalability, real-time