DadgogoAI Dictionary

Dictionary entry

RLHF

noun \ˌär-ˌel-ˌāch-ˈef\

also reinforcement learning from human feedback

TopicTraining First known use2017 Senses1
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Definition of RLHF

  1. : reinforcement learning from human feedback: a training method in which people rate or compare a model's answers, and the model is trained to produce the kinds of answers people prefer

    • RLHF is a big part of why chatbots sound polite and helpful.
    • Too much RLHF can make a model eager to please.

Origin & history

first known use2017

Described in a 2017 research paper and made famous by OpenAI's InstructGPT in 2022, the approach behind ChatGPT.

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Related terms

reinforcement learning a way of training in which a model tries actions, receives rewards or penalties, and gradually… reward model a separate model trained to score how good a response is, used to guide reinforcement learning… alignment the work of making an AI system's goals and behavior match what its designers and users… sycophancy an AI model's tendency to tell users what they want to hear, agreeing with them, praising… glazing (slang) excessive, undeserved praise; often used to complain that a chatbot flatters the user…

Cite this entry

"RLHF." AI Dictionary, Dadgogo, https://dadgogo.com/dictionary/rlhf/. Accessed 4 Oct. 2026.

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