IonRouter
Serve Any AI Model, Faster & Cheaper
IonRouter launched on March 11, 2026 with 131 votes, #295 of 23,380 launches that month and more than 95% of that year's launches.
What it does
Teams use IonRouter as a drop‑in OpenAI-compatible API to hit the best open models for LLMs, vision, video, and TTS at HALF market rate. You can run agents and multi‑modal apps, and deploy your finetunes on our fleet while we handle optimization and scaling in the background. Under the hood, IonRouter runs a custom inference engine (IonAttention) built for NVIDIA Grace Hopper, cutting price and latency for your workloads.
Zero-latency API auth and billing for distributed GPU inference.
High throughput, low cost inference. Powered by IonAttention. Our custom inference stack multiplexes models on a single GPU, swaps in ms, and adapts to traffic in real time. Built from the ground up for Grace Hopper. Deploy your finetunes, custom LoRAs, or any open-source model on our fleet. Dedicated GPU streams with no cold starts and per-second billing. Teams use Ion for highest performance robotics perception, multi-camera surveillance, game asset generation, and AI video pipelines. Five vision-language models on a single GPU — 2,700 video clips, concurrent users, <1s cold starts. Point your existing OpenAI client at Ion. Any language, any framework. One line change. from openai import…from ionrouter.io
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