OpenAI’s Codex for PowerPoint can spit out editable slides — but does it understand your brand?

A useful step, not a miracle

OpenAI's Codex for PowerPoint has entered limited beta and it can now generate editable PowerPoint files from a prompt. We tested it by asking for a 12–15 page introduction deck for Lei Technology (雷科技). The result: a structurally complete, editable PPT that looks like a real deck and can be handed to colleagues. Impressive? Yes. Flawless? Not by a long shot.

What it does well — and where it trips

With a casual “help me make a Lei Technology intro PPT” prompt, Codex produced title pages, case examples and data cards. It handled content aggregation from public web pages quickly and avoided outright invention on many factual points. But the model also drifted into the wrong genre — turning an introductory deck into a business-sponsorship pitch — and generated empty placeholders (large, half-finished tables and blank asset slots) that its own checks didn’t catch. More detailed prompts pulled it back toward the intended “brand introduction” framing, but they also made the deck read like a research report rather than a presentable brand pitch.

China-specific limits and a practical upside

A key limitation for China-facing work: the plugin cannot crawl platform-locked data such as WeChat public account metrics, so follower and reading stats must be added manually. And it has been reported that the PowerPoint plugin’s usage quota appears to be counted separately from Codex core calls — a detail that matters for teams iterating frequently. In short: you get a genuine, editable PPT (so the usual shortcomings are fixable by hand), but not the polished, asset-rich deliverable a human designer would produce without extra input.

Verdict

Can Codex for PowerPoint replace a human in creating a brand-facing deck? Not yet. It is usable and speeds the first draft, especially with careful prompts. But it’s brittle on tone, visual refinement and platform-specific data — especially for China’s fragmented content ecosystem. For now, think of it as a powerful assistant that still needs human editors and local data plugs to make a slide deck that truly represents a Chinese brand.