BRUSSELS, June 28 (Reuters) - EU antitrust regulators will seek additional third party views on the partnership between Microsoft and OpenAI as well Google's artificial intelligence deal with Samsung for Samsung devices, EU competition chief Margrethe Vestager said on Friday.

Vestager had in March sent questionnaires to Microsoft, Google, Meta's Facebook and ByteDance's TikTok as well as other big tech companies related to their AI partnerships.

"We have reviewed the replies, and are now sending a follow-up request for information on the agreement between Microsoft and OpenAI. To understand whether certain exclusivity clauses could have a negative effect on competitors," she told a conference. (Reporting by Foo Yun Chee; editing by Philip Blenkinsop)