There are biodegradable latex balloons, but even those degrade VERY slowly, so it's not suitable for home composting.
It is not recommended to put a balloon into a home composting bin.
Most balloons are made of rubber or plastic, which are not biodegradable and will not break down in a home composting system.
In addition, balloons can cause problems in a compost bin because they can clog the air and water channels that are essential for the decomposition process.
It's best to avoid adding balloons to your compost bin and instead recycle them or dispose of them in your regular trash.
If you want to add a balloon to your compost bin, make sure to use a biodegradable balloon that is specifically designed for composting.