Dear recruiters, if you are writing a job posting for AI Engineering, here is how long each tool has been available, so you don't make a fool of yourself: TensorFlow: 17 years MCP: 6 years vLLM: 7 years Ollama: 10 years CrewAI: 12 years CUDA: 25 years JAX: 11 years Weaviate: 14 years HF Transformers: 19 years Triton (OpenAI): 10 years LlamaIndex: 8 years LangSmith: 8 years AutoGen: 22 years LangGraph: 22 years