model routing spike

model routing is a super interesting question

• i think an effective router needs to live in the harness; routing is inherently domain specific
• the most exciting thing about routing is the potential for cost savings
• the hardest question here is how you judge if a router is doing a good job

we're starting with simple routing logic in open-swe; will build out a better router as pain points come up!

• https://github.com/langchain-ai/open-swe/pull/2474
• https://github.com/langchain-ai/open-swe/pull/2653

would love to hear about if folks have built effective routers and how they've gone about that :) or any other thoughts that folks have