Sellio tech stack
AI customer support in one shared inbox powered by AI agents
The stack
“OpenRouter powers every AI reply in Sellio. One API gives our customers' AI agents access to Claude, GPT and Gemini, and if a provider fails we fall back to another model automatically. No separate contracts, one bill and easy model switching, which made it th…” — the maker, Oct 2026 ↗
“Claude Code is the engineer on our small team. It built most of Sellio with us: the shared inbox, the AI agent, the widget and 3,000+ tests. It reads the whole codebase before touching anything, runs the checks itself and explains every change, which is why we…” — the maker, Oct 2026 ↗
“We use Codex as a second pair of eyes. It reviews pull requests, catches edge cases and runs long refactors in the background while we keep shipping. Strong at following instructions exactly, and great at reading a large codebase quickly.” — the maker, Oct 2026 ↗