After a rather tumultuous year, Blender 2.26 has finally been released! 2.26 is not yet a finished product and some functionality is still missing, but it's great to see Blender alive again after such a long time.
You can grab an IRIX mips4 binary here. Due to an error in compilation, there currently is no mips3 2.26 binary available though one can be built from source if desired. The binary for 2.25 should work with mips3; it's still available from the same download page if you want to give Blender a try.