This paper proposes a cognitive-pragmatic alternative to the traditional, speech-acttheoretic, account of the notion of commitment. The perspective adopted here questions the relevance of addressing actual commitment as a speaker category and shifts the focus of the discussion from properties of speaker commitment to processes of commitment attribution. Using a relevance-theoretic framework, it will be suggested that inferring commitment in ordinary, cooperative, communication is part of the processes by which hearers derive speaker meaning, and that the degree of reliability that a hearer may expect to attain in attributing commitment to a speaker correlates with the degree of certainty associated to the derivation of explicatures and implicatures from an utterance.