There are at least two Saraswati sahasranaamas, that I know, are available.
At the request of Narada, Sanat Kumara Maharshi enumerated these sahastranaamas.
The description on this source says the folowing
The following is a rare Sahasranama Stotram (hymn containing 1008 names) of Goddess Sarasvati from Dasha Mahavidya Rahasyam in Rudra Yamala Tantram. Lord Shiva, who gives this Sahasranama to Goddess Parvati.....
Are there any other such Saraswati sahasranaamas available?