![]() This initial model can also be fine-tuned on additional text or conditions, but does not necessarily need to be. DeepMind used their 280 billion parameter model Gopher. Anthropic used transformer models from 10 million to 52 billion parameters trained for this task. OpenAI used a smaller version of GPT-3 for its first popular RLHF model, InstructGPT. To start, we'll look at how language models are pretrained.Īs a starting point RLHF use a language model that has already been pretrained with the classical pretraining objectives (see this blog post for more details).
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