In today’s Digest, we look at Amazon Ads bringing advertisers to ChatGPT, new filings revealing Sony’s early sharing of the WPP rebate probe, and Omnicom planning 15,000 job cuts as ad integration stumbles.

Amazon Ads expands into ChatGPT 

Amazon's steady march through premium ad inventory has a new stop: ChatGPT. Starting 10th September, advertisers on Amazon Ads including its DSP buying platform can place campaigns inside the ChatGPT app, under a fresh partnership with OpenAI. For now, it's a pilot, limited to a handful of US advertisers, with Delta Vacations as the first named tester. Chris Conetta, who directs omnichannel supply at Amazon DSP, framed the move as an extension of where audiences already spend their time, calling conversational ads one of the fastest-growing ways for brands to reach both new and existing customers.

The deal also reinforces a pitch Amazon has been making for over a year: that its inventory is cheaper and better targeted than what rivals offer. 

Sony proactively shared WPP rebate probe

New court filings are adding fuel to Richard Foster's wrongful termination case against WPP. Documents submitted suggest that Sony voluntarily handed over information from its own internal investigation into the holding company's business practices, rather than being compelled to do so. The materials arrived as part of an amended complaint filed 13th August by Foster's legal team, who say the Sony documents back up years of whistleblower reports he had raised internally. 

The amendment builds on Foster's original lawsuit, filed in October 2025, which accused WPP of retaliating against him and ultimately firing him for trying to expose what he believed was a sweeping, illegal rebate scheme. That Sony, one of the company's own clients, apparently reached similar conclusions independently could prove significant.

Omnicom plans 15,000 job cuts as ad integration stumbles

Omnicom's integration of IPG is producing a split verdict. One business is merging smoothly, the other is proving far messier. The advertising giant told a Goldman Sachs investor conference that it expects to shed 15,000 jobs, trimming its workforce to roughly 105,000 by year-end, as it chases USD$1.5bn (£1.12bn) in cost synergies from the acquisition. CFO Phil Angelastro said the integrated media business now just over half the company's core revenue and growing at double-digit rates had come together quickly and smoothly, despite the recent loss of PepsiCo's global media account.

Advertising has been a tougher story. Combining Omnicom's and IPG's overlapping portfolios meant eliminating brands and repositioning operations worldwide, a process Angelastro called the integration's biggest challenge.