Title: The Vampire Diaries (season 4)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for a fourth season by the U.S. channel The CW on May 3, 2012, seven days before the third season's finale. Unlike the previous seasons that aired in September, it premiered on October 11, 2012, to avoid competition from major television shows. Season 4 consisted of 23 episodes instead of the usual 22 episodes. On January 11, 2013, it was announced that a back-door pilot focused on the Originals, titled The Originals will air on April 25 for series pick-up. On April 26, 2013, The CW announced that The Originals, The Vampire Diaries spin-off series, was picked up for a full season slated to premiere next fall. On February 11, 2013, The CW renewed the series for a fifth season.
Title: The Vampire Diaries (season 8)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for an eighth and final season by The CW on March 11, 2016. On July 23, 2016, The CW announced that the upcoming season would be the series' last and would consist of 16 episodes. The season premiered on October 21, 2016 and concluded on March 10, 2017.
Title: The Vampire Diaries
Content:  first half of the season. Now there is a spin-off called The Originals, that goes into depth about the original vampire family from The Vampire Diaries. On February 16, 2010, The CW announced that it had renewed the show for a second season, which premiered on September 9, 2010. On April 26, 2011, The CW renewed the show for a third season. The third season premiered on September 15, 2011. The fourth season premiered on October 11, 2012. The CW renewed the show for a fifth season on February 11, 2013. On February 13, 2014, The CW renewed the series for a sixth season. On January 11, 2015, the CW 
Title: The Vampire Diaries (season 7)
Content:  The Vampire Diaries, a one-hour American supernatural drama, was renewed for a seventh season by The CW on January 11, 2015, and premiered on October 8, 2015. On March 11, 2016, The CW renewed The Vampire Diaries for an eighth season, which was confirmed to be the final one in July 2016.
Title: The Vampire Diaries (season 2)
Content:  On February 16, 2010, The CW officially renewed The Vampire Diaries for a full 22-episode second season. It premiered on Thursday September 9, 2010, at 8 pm ET. The season finale aired on May 12, 2011.
Title: The Vampire Diaries (season 6)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for a sixth season by The CW on February 13, 2014, and it premiered on October 2, 2014. A majority of the episode titles for this season are named after songs released in 1994 & 1903. The Vampire Diaries was renewed for a seventh season on January 11, 2015, by The CW.
Title: The Vampire Diaries (season 4)
Content:  On May 3, 2012 The CW renewed The Vampire Diaries for a fourth season. Unlike previous seasons, it started on October 11. Kevin Williamson, Julie Plec, Leslie Morgenstein and Bob Levy were executive producers for the series. The season was concluded on May 16, 2013.
Title: List of The Vampire Diaries characters
Content:   The Vampire Diaries is an American fantasy-drama television series which was first broadcast on The CW from 2009 to 2017, airing 171 episodes over 8 seasons. Kevin Williamson and Julie Plec adapted the TV series from L.J. Smith's novel series of the same name. Some of the characters appeared in the spin-off series, The Originals and Legacies.
Title: The Vampire Diaries (season 5)
Content:  The Vampire Diaries, an American supernatural drama, was renewed for a fifth season by The CW on February 11, 2013. The fifth season premiered on October 3, 2013, followed by the series premiere of the spin-off series The Originals.
Title: The Vampire Diaries
Content:  she would be leaving the show after its sixth season. Dobrev returned to record a voiceover for the seventh-season finale and returned as a guest star in the series finale. In March 2016, The CW renewed the series for an eighth season, but in July of that year announced that the eighth season, consisting of 16 episodes, would be the show's last. The final season began airing on October 21, 2016, and ended March 10, 2017. The concepts and characters developed in the series served to launch a media franchise that includes other television series, web series, novels and comic books. The television series The Originals, which also aired on The CW, was the first major entry in this collection of connected works.

Question: how many seasons of vampire diaries r there?
Answer: eight.
8.