RouterPlus launches at YC with an auction for AI inference

A team running AI in production often pays for a frontier model on every call. A cheaper model would do most of the work. The same model also costs different amounts, and behaves differently, through different providers. RouterPlus launched on Y Combinator Fall 2026 today to fix both.

The product is a managed inference marketplace, the launch page says. RouterPlus tests models on the customer's own traffic. It finds the one that works at the lowest cost. It then has inference providers compete to serve that model. The customer calls one API. A backup provider is on standby.

Three named cases

The YC launch post names three customer outcomes, each stated as RouterPlus's own account.

A consumer app sends about 3 million messages per day. It moved from a closed model to an open one through RouterPlus. P95 latency fell 25 percent. Cost fell. Quality went up, the company says. The post names no customer and no model.

An AI assistant company arrived at RouterPlus after two outages in one week. RouterPlus sourced capacity for 15 times the team's average load. A second provider is held ready. The company name and the model are not stated.

Several teams pooled their demand into one deal with a provider. The provider filled its GPUs. Each team got better terms than it would have alone, the launch page says.

Who is running it

The founders are two ex-India-institute engineers, the launch page says. Alok was a managing director at AWL Inc. He scaled edge AI across more than 10,000 sites in Japan, Southeast Asia and the Middle East. He is also an early-stage investor at Day Zero Ventures.

Lakshmi was the first hire and chief technology officer at Trupeer AI. The launch page says she took that company to 4 million dollars in annual recurring revenue. She spent four years building GPU infrastructure for Samsung's ML platform in Korea. Both studied at IIT Bombay.

RouterPlus had 18 votes on YC in the first hours of its launch. The post lists no outside investors. The industry is B2B, the tags are Developer Tools, Marketplace, B2B and AI.

What a buyer should test

The RouterPlus pitch rhymes with OpenRouter and other inference brokers already on the market. A team that is already paying for a managed router gets a comparable product with the added auction between providers. A team that is not can run its own with a weekend of engineering. The honest decision is the same one for both: pick a cheaper model and a cheaper provider, then prove they hold up on the traffic you already see. Every figure in the launch post belongs to the company. Only your own eval on your own prompts applies to your product. Run it at your own peak load, not at the vendor's.

Source

RouterPlus: The marketplace for your inference needs, Y Combinator.