ARouter – AI API Cost Optimizer

A drop-in proxy for OpenAI and Anthropic APIs that automatically routes requests to cheaper models when possible and handles failover between providers. Helps developers reduce AI API costs and improve reliability. Target users are AI app developers and teams with high API spend.

LLM API costs are a real and growing pain point as more teams ship AI features at scale — cost optimization has become a genuine engineering concern in 2024-2025, not a nice-to-have. The closest incumbent is LiteLLM, an open-source proxy that already handles multi-provider routing and has significant adoption; any paid layer here competes directly against a free, well-maintained OSS tool with a large community. The $1k-8k/mo revenue band is plausible for a small self-serve SaaS targeting cost-conscious teams, but the ceiling is low unless enterprise contracts or significant usage-based pricing can be layered in. The biggest risk is the LiteLLM problem specifically — it's hard to charge for something developers can self-host for free, and the switching cost to the paid version needs to be clearly justified by either better UX, support, or automation that the OSS version lacks.