The Brief – Wednesday 16th June: ITVX best seven day performance; IAS and Spotify launch episode-level pre-bid optimisation; OpenAI’s ChatGPT market share

Welcome to The Brief, The Media Leader’s round-up of media news.

🤖 OpenAI’s ChatGPT fell below 50% market share for the first time at the end of May (46.4%), a notable change as the company introduces advertising. Google’s Gemini (27.7%) and Anthropic’s Claude (10.3%) have seen spikes in growth, while other AI chatbots Grok, Perplexity, DeepSeek and Meta AI all retain less than 5% market share. (TechCrunch)

📱 Instagram boss Adam Mosseri has dropped out of his planned headline session at the Cannes Lions Festival of Creativity this year. (Campaign)

📺 ITVX has delivered its best seven-day performance in nearly two years. 110m streams occurred on the streaming platform last week driven by the start of the Fifa World Cup and top programme Love Island. (ITV)

🖥️ Netflix has extended its deal with iHeartMedia to secure exclusive rights to video versions of more podcasts, including shows from Martha Stewart, Lele Pons and Kate and Oliver Hudson. The full video episodes of those shows will no longer be available on YouTube. (Variety)

🎧 Integral Ad Science has launched episode-level pre-bid optimisation solutions for programmatic podcast audio and video as part of its partnership with Spotify. (IAS)

👤 The World Out of Home Organisation has elected two new board members. Elizabeth McIntyre, CEO of Australia’s Outdoor Media Association, and Felipe Viante, co-founder of B.drops and president of the Brazilian Out of Home Association, have both joined. (WOO)