Matt Wolfe demonstrates OpenAI's new GPT-5.3 Codex Spark generating a fully playable Vampire Survivors clone in 50 seconds using Cerebras chips for ultra-fast inference. The game includes shooting, XP, leveling, and upgrades, though it's limited to ChatGPT Pro users on a $200/month plan.
OpenAI rolled out a new model. GPT 5.3 Codex Spark. What makes this one different and what makes it the Spark model is that it's using the Cerebras chips, which make inference really, really fast. So when you type a prompt, the response you get back is, like, insanely quick. I'll give it the prompt. Create a beautifully designed Vampire Survivors clone that I can play in my browser. It already says I finished with the playable build, and it's been maybe 30 seconds. Okay, so it did the whole thing in 50 seconds. That's pretty crazy. Let's open our index.HTML here and look at this. This is ready. It's called Nocturne Survivors. So let's start our run. Okay, so here's my little character that's moving around and shooting automatically, and I could pick up my xp, and the XP is going up. Like, this game was made in 50 seconds. Holy crap. I mean, there's no sound effects to it, and it's literally just dots. But the logic of the game is there. Let's see what happens when we level. I want to see. Yeah. Okay, so we just leveled up. Pick one. Upgrade. Increase fire rate by 12%. Projectiles pierce. One additional. Let's do the piercing run. That seems like it would work. Okay, so we can see that the bullets are now, like, actually going through the enemies. The swarms are getting more and more. Well, there's more of them. I love Vampire Survivors, so I need to actually close out of that or I will keep on playing. This one is only available for pro plans, so, like $200 a month plans on ChatGPT, but it is actually really, really insane.
AI News: Dots, GPT-6.1 Sol, Sonnet 5.5, Gemini 4, and everything you need to know
