IonRouter
High-throughput inference API with OpenAI-compatible access to open-source models at half market rate
IonRouter is a managed inference API by Cumulus Labs that provides OpenAI-compatible access to open-source AI models at roughly half the cost of competitors. Powered by a custom IonAttention engine optimized for NVIDIA Grace Hopper hardware, it supports LLMs (Qwen, DeepSeek, GLM), vision, video generation, and text-to-speech models. Developers swap their base URL and get sub-100ms model swap times with up to 7,167 tokens/second throughput.
Pricing: Per token usage
IonRouter Alternatives
Explore 67 products in the Inference APIs category. View all IonRouter alternatives.
OpenRouter
Unified API for 400+ AI models across 60+ providers, OpenAI SDK-compatible, pay-as-you-go
Groq
LPU-powered inference API for LLMs, speech, and vision models with usage-based pricing
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