It might be an idea to add that there's a free tier to the Plans & Pricing section, rather than just in the FAQ. That might give an indication of what to expect from the free trial as that isn't clear.

I think you could make better use of the demo too by scrapping the placeholder text and instead using it as a 'how to' guide for the platform itself - not only would this be useful in itself for your customers, but it'd help show off what it can do. I tend to prefer demos that show the product in a real-life situation as it helps me more in understanding how I might be able to get value from it.

Also I actually find the "No Credit Card Required" a bit scary (although that could just be me) - perhaps something more like "Get Started For Free"?

Just some small feedback but since it's for developers, you might want to add authentication via Github accounts.