Epic Games claims its newly rebuilt storefront launcher loads faster than Steam's client, and it attributes the result to an unconventional development method it calls "vibe coding."

The claim comes from Epic itself, not from independent benchmarking. Polygon reported the company's statement under the headline "Epic Brags That Its New 'Vibe Coded' Store Launcher Is Faster Than Steam." No third-party performance figures accompany the assertion. For developers and publishers watching storefront economics, that distinction matters.

What is 'vibe coding'?

The term describes software built with heavy reliance on AI-assisted development, where engineers describe intent in plain language and let model-generated code carry more of the implementation load. Epic has applied this approach to its PC storefront client. The company frames the outcome as a win for both speed of delivery and speed of the product itself.

The launcher has long been Epic's weakest surface on PC. Players criticized the original client for slow load times and a thin feature set compared with Steam. A faster, lighter launcher addresses the most persistent complaint.

What does this change for studios?

In operational terms, not much yet. Epic's 12% revenue share, against Valve's 30% on standard Steam sales, remains the sharpest competitive lever the company holds. A faster launcher improves the customer experience around that lever.

For publishers weighing storefront strategy, the practical questions are unchanged:

• Does a quicker client raise conversion or retention on the Epic Games Store?
• Does AI-assisted development cut Epic's maintenance costs enough to sustain its revenue-share position?
• Will independent benchmarks confirm the performance claim?

Epic has not published comparative test data alongside the statement. Until someone runs matched hardware comparisons, "faster than Steam" stands as a vendor claim.

The signal inside the claim

The more consequential story may be the method, not the metric. A major platform holder saying its client was substantially built through AI-assisted coding is a statement about production economics. If vibe coding delivered a competitive client faster and cheaper, other platform operators will study the approach. Tooling costs, headcount needs and release cadence could all shift.

It also raises quality questions. AI-generated codebases carry known risks around maintainability, security review and edge-case behavior. A store launcher handles payments, entitlements and updates. How much of that critical path ran through generated code is the question Epic has not answered publicly.

Why the brag matters now

Epic has spent years and hundreds of millions of dollars in free-game giveaways trying to pull users from Steam, including via its free titles program and exclusive deals. Performance parity or superiority on the client side removes one of the remaining arguments against daily use of the store.

Valve, for its part, has not responded publicly to the comparison.

Watch for independent performance testing in the coming weeks, and for any Epic disclosure on how much of the launcher's codebase the AI process produced. Those two data points will tell developers whether this is a real shift in how storefronts get built, or a marketing line ahead of a holiday sales season.