In "Kaifuso," in addition, Chinese poems written by FUJIWARA no Fuhito, whose works were not among the poems in "Manyoshu," were included, whereas, Chinese poems by OTOMO no Yakamochi were included in "Mayoshu" but not in "Kaifuso."
なお、『懐風藻』には『万葉集』に歌のない藤原不比等の漢詩が収められており、大伴家持は、『万葉集』に漢詩を残すものの、『懐風藻』には作品がない。