DevSpanner is a desktop AI console for developers. Run frontier models side by side as lanes, pick up any of your existing sessions, and watch every routing decision as it happens.
DevSpanner puts the model, the conversation and the routing on one screen. No spinner hiding what happened to your request.
Frontier models sit side by side as lanes, grouped by vendor. Switch lanes per message and keep the conversation going.
Browse every session on your machine across projects, open one read-only, and continue it in a safe fork. The original transcript is never touched.
A live trace shows which lane took each job, time to first token, token counts and the health of the mesh. The topology view turns it into something you can watch.
Topology on the left, routing trace beneath it, the conversation on the right. Pick a lane in the header and every job says which lane served it.
The console is the foundation. The point is a developer AI workbench with every tool in reach. Early-access members shape the order.
File, shell and browser tools with permission prompts you can actually read, and long-running agent jobs that stay visible in the trace.
Bring your own keys for additional providers, plus open-weight and local lanes, all selectable per message.
Route the cheap parts of a job to cheaper lanes and reuse cached tokens for repeated context, with the savings shown per job.
Share a session or a fork with a colleague, with the routing trace intact.
Every session on your machine, searchable, resumable, forked on continue.
Live topology, routing trace, per-job lane, timing and token accounting.
We're onboarding developers in small batches while the tools work lands. Leave your email and we'll send an invite when your batch opens.