Imagine instead of lambda or gpt-3 we take ten thousand years to walk through every possible conversation manually, write down and assign a percentage to every possible branch of conversation in a hash table. Call it the world's slowest, bootleg neural net. Is the hash table API sentient?
We perceive a dog to be sentient because it has intentionality, self-awareness and something resembling an internal state of mind, not because it can talk or not. Even a snail is more sentient than a chatbot.