Codex + HY3 is Insane (FREE!)

**Julian Goldie** (0:00)
Today, I'm going to show you a new way to use Codex for free, using a combination of Codex, and then also we've got Tencent, HY3, that only just dropped about 24 hours ago. So this is a brand new model from China, it's open source, and it's available for free on the API. Also, the other thing I would say here is that, this API is only available for two weeks. You might as well make the most out of it today, which is what I'm showing you. So essentially, we've plugged in HY3 from Tencent into Codex. We can get a free API from OpenRouter, and then you can easily get that API and build whatever you want for it. Now we've created this custom version where we can use it with Goal Mode, we can see everything that we've created, we can check out the workspace. So if I show you an example of this, if you go to the workspace over here, and then we see what we've created, we can see everything that we've built, and we can preview everything that we've created previously using this powerful system. And the great thing about this is the HY3 is actually pretty decent when it comes to code. It's not like Fable 5 level, but it's a free API. And also the next time something else comes out that's free, you could just swap the APIs and change them around. So the way that you can do this is you get your API key from OpenRouter, as you can see here. And then if you've already got Codex installed locally, you can just ask Codex, listen, use Tencent, HY3, give it the documentation from this page for OpenAI, give it access to API key, and then say, give me a version where I can use HY3 for free with Codex. That's basically what we did. We actually did it with Claude Desktop instead, because we wanted to build it into our Agent OS.
And it was really simple and easy. Literally what I said was, can you set up HY3 for free with Codex, see the free API on OpenRouter, put it inside the Agent OS, took the information here, as you can see, found the free API, which was pretty nice, installed Codex, tested it out. It actually didn't work first time around.
So I just quality controlled it, but then second time around, ready to go. And it's actually working. We can see the preview here. We can see everything we've created, and we can come back and chat with it whenever we want. Pretty amazing stuff. Also, for example, created a free Coder with HY3 here too. So it's kind of similar to Codex, but it just runs directly with HY3, no Codex involved. And then we can prompt it over here. We get the preview over here. We can save builds to our workspace. See all the conversation history as well. And the great thing as well is like it integrates directly into our workspace. So let's say, for example, you're using Claude, you run out of tokens, you're like, what should I do? Should I stop building? It's like, no, no, no, no, no. Just take the same project and plug it into HY3 Coder or plug it into Codex instead so that you don't stop. And that's the great thing about this. Also, what I would say here is that if you look at the system, it really runs down to like two parts. So you get access to hands, right? So OpenAI's coding agent, you give it a task, it writes the files, runs the commands and reports back, and the agent itself is free to install. And then you got HY3, which is a brain. So Tencent's new 295 billion mixture of experts model, built for exactly this. It's designed for agentic coding and reliable tool calling. So on OpenRouter, the Tencent forward slash HY3, free version, costs nothing to use. And you can use it until I think it's July the 21st. So it gives you about two weeks to test it out. And then all you do is you swap it inside the config file. Now you could do that manually. For me, I don't personally like to do that myself, just because I'm non-technical and I can easily just give it to Claude. And then literally in two rounds, we have it ready to go and implemented. The other great thing about HY3 from Tencent is that you can actually go to Hermes here and you can have a free installation, a free agent profile with Hermes too. And that way you can use it for free in two ways. You can use it as an agent profile inside Hermes and also inside Codex, and then you can save and build everything you want. I haven't tested out with Goal Mode as well, but that would be pretty interesting to use. And also if you run out of tokens or if you get rate limited on HY3, you can also use another free API that plugs directly into it called OmniRoot. Now OmniRoot is another free API that actually runs through like 93 providers, but either way you can use Codex for free. We've also plugged it into Claude Code, so we've used OmniRoot with Claude Code, and that way we can use the agent harness in the power of Codex and free Claude Code, but with free APIs and that sort of thing, which is pretty cool.