Ive tried both, and pi's core is a lot smaller but can be extended to have as many features as opencode. personally I like using pi with llama.cpp, and use stuf

Ive tried both, and pi's core is a lot smaller but can be extended to have as many features as opencode. personally I like using pi with llama.cpp, and use stuff like pi.dev/packages/pi-llama-cpp-stats to combine them better. there's a lot of stuff you'll feel like pi is missing, but its just optional.