Epic's Vibe-Coded Launcher vs Steam Startup Speed: Dated Timeline, Both Sides and What's Unverified (Oct 2026)
Dated timeline of Epic's 14 Oct claim of a 46% faster launcher (5.47s vs 10.07s), Steam's 13 Oct update, the 5.23s clip, Epic's competitive-play retraction and what remains unverified.
TL;DR: On 14 Oct 2026 Epic put a rebuilt, "vibe coded" Epic Games Launcher into public Preview and said it cold starts in 5.47 seconds against Steam's 10.07 (about 46% faster). Within a day a user clip showed the current Steam client starting in 5.23 seconds. Valve's stable client update that lists faster startup was dated 13 Oct, a day before Epic's launch, and Valve has published no numbers. Epic's benchmark was commissioned by Epic, and the user clip is a single machine. Nobody has shown a controlled head-to-head yet.
Timeline
- September 2026: Steam's beta client is already getting startup improvements, according to TechPowerUp.
- June 2026: At an Unreal Fest presentation, Epic announced a "storefront rearchitecture" and a "Launcher V2 private Beta," promising "5x faster cold start" times, per Ars Technica.
- Early October 2026: Epic commissions startup testing from Keywords Studios. Epic's footnote says the testing was done in October 2026.
- 13 Oct: Valve ships a stable Steam Client update. Its changelog includes the line "Improved Steam Client startup performance," with no figures. The same update brings Big Art Mode, Big Picture screensavers and the experimental Pyrowave Remote Play codec.
- 14 Oct: Epic releases the new launcher in Preview for Windows, macOS and Linux. Its blog post says: "Programming is hard. So, instead of doing that, we vibe coded a new Epic Games Launcher that's way faster and more responsive than the current one." Epic's launcher page shows 5.47 s versus 10.07 s for Steam, and 0.36 s versus 0.42 s when restoring from the background to the library.
- 14 Oct: Epic's first version of the post advised developers and competitive Fortnite and Rocket League players to stay on the existing launcher, according to Tom's Hardware and TechPowerUp. Later that day, Epic communications manager Brian Sharon gave a statement: "once you're in a game you're good to go... there's nothing that would prevent casual or competitive play." Epic updated its blog post to remove the recommendation.
- 14–15 Oct: A clip from X user girlglock_ shows the updated Steam client opening in 5.23 seconds. TechPowerUp and TweakTown report it.
- 15 Oct: TechPowerUp reports Valve hasn't shared numbers and that Epic's figures were probably taken on an older Steam build.
Epic's side
- The claim: 5.47 s against 10.07 s from cold start, billed as 1.8x or 46% faster. Epic also claims 0.36 s against 0.42 s for restore from the system tray, which is 14% faster, or 0.06 seconds.
- The method: according to Epic's footnote, results are an average of 5 tests on each of 13 machines, excluding the 3 lowest-end machines tested, run by Keywords Studios, which Epic describes as an independent third party commissioned by Epic. Epic says individual results will vary.
- Caveats Epic states: the launcher is in Preview, "light on features," and some social features and account management options aren't there yet. Installing the Preview automatically uninstalls the legacy launcher.
- How it was built: Epic Games Store GM Martin Keely told PC Gamer and IGN, as quoted by Ars Technica, that the team "started from scratch" and used AI as a tool to write and review code in a different tech stack.
Steam's side
- Valve's 13 Oct changelog says only "Improved Steam Client startup performance." Valve hasn't published benchmarks or responded to Epic's chart in anything we could find.
- TechPowerUp points out that the update predates Epic's announcement. Calling it a rushed reply would be unsupported, and the timing could be coincidence.
- The 5.23-second figure comes from one user's clip. TweakTown adds that other users report Steam starting in roughly 5 to 7 seconds depending on the machine, and that one mid-range PC still saw Epic faster from the system tray. Those are informal reports.
Independent checks so far
- Ars Technica says its own testing confirmed the new Epic launcher goes from cold start to the store page "a few seconds faster than Steam" (assuming no login or update issues). It calls the 0.06-second tray difference unnoticeable. Ars doesn't say which Steam build it tested.
- Tom's Hardware notes Epic gave no comparison against its own old launcher, only "way faster."
Comparing the two sets of numbers
| Measure | Epic's figure | Steam figure |
|---|---|---|
| Cold start | 5.47 s | 10.07 s (Epic's test, likely older client) |
| Cold start after 13 Oct update | not retested publicly | 5.23 s (one user clip) |
| Restore from tray | 0.36 s | 0.42 s (Epic's test) |
The 5.23 s and 5.47 s figures aren't from the same machine or method, so the 0.24-second gap can't be read as a result.
What is unverified
- Whether Epic's Steam baseline was an older client. TechPowerUp says "probably"; Epic hasn't said which Steam version it used.
- A like-for-like test of the new Epic launcher against the 13 Oct Steam client on the same hardware.
- How much of Steam's gain comes from the 13 Oct update itself. Valve gave no numbers.
- Whether the "competitive players" advice was a real technical concern. Epic removed it and said nothing prevents competitive play.
- How "vibe coded" the launcher really is. Epic's own wording is partly tongue-in-cheek, and Keely's description is of AI-assisted development.
What this means for you
Cold-start time is only a few seconds either way, and both companies' numbers depend on hardware, caching and network. If you want to know for your own PC, time both clients several times after a fresh boot. Epic's Preview does replace the legacy launcher on install, so you'll need to reinstall if you want it back.
Sources: Epic Games Store blog and launcher.epicgames.com (14 Oct 2026); Steam Client Update 13 Oct (Steam News); TechPowerUp; Tom's Hardware; Ars Technica; TweakTown. Checked 16 Oct 2026.
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