35% faster than swe-mini-agent, nice. You say this is due to somehow parallelizing operations?
I'm using a custom harness based on swe-mini-agent (actually its little brother, their tutorial [0]) and found it way faster than codex (for small tasks) despite being "just bash" in a while loop.
The main difference is that I do the opposite of what you said, i.e. I do dump the context in the prompt. You don't need to grep for what's right in front of you :)
But my repos are small (often smaller than Claude's system prompt!), and I have a script that dumps an "outline" (e.g. function headers and top level vars).
I had an even smaller harness for surgical edits but it was a bit too fiddly and I missed the "let it poke around and figure stuff out" mode of full agentic ones.
What I do miss from that old one though is that it could edit several files simultaneously, in one LLM call. Maybe someday I'll add that back :)
That being said, within a few months everyone who cares about speed will be on Cerebras etc., which will make even the slow harnesses way faster than mine and yours! (I've tested them already and it's insane how fast it is...)
Really cool that you built your own harness off of mini-swe-agent, we took a lot of inspiration from that. We're looking forward to trying out Sol Ultra Fast ourselves too! In our own experience, testing, building, searching, and other tool work still dominate a lot of time, but yes there could be a future where harnesses don't matter at all...but we expect Cerebras will also be super expensive :/
Yeah I forgot to specify "everyone with infinite money" hahahah.
Not sure how you monetize a harness either way though?
Hmmm couple things you can do I think OpenCode charges a subscription for models you can use in app without porting over a subscription or API key from CC/Codex, or you can charge enterprise clients, but that's something we'll have to figure out in the future, we're currently focused on making users happy.