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Cumulus Labs›
Products & Services
AddedJul 4, 2026
UpdatedJul 4, 2026
IonRouter

Cumulus Labs› offers IonRouter

Product
Currently Offered

IonRouter is a high-throughput, low-cost inference API and drop-in OpenRouter alternative powered by Cumulus Labs' IonAttention engine.

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Overview

IonRouter serves inference for language, vision, image, video, and audio models through a single OpenAI-compatible API. It is built on IonAttention, a custom attention kernel for NVIDIA Grace Hopper that multiplexes models on a single GPU, swaps in milliseconds, and adapts to traffic in real time.

The service offers dedicated GPU streams for custom models and LoRAs, per-second billing, and no idle costs. Use cases include robotics perception, multi-camera surveillance, game asset generation, and AI video pipelines.

IonRouter - Classification

Industry
  • AI Infrastructure
Model
  • B2B SaaS
Customer
  • B2B

More from Cumulus Labs

  • Cumulus Inference Platform logo

    Cumulus Inference Platform

IonRouter - Direct Competitors

  • Fireworks AI

    Fireworks AI logo

    Fireworks AI Inference

    fireworks.ai

  • Baseten

    Baseten logo

    Pre-optimized Model APIs

    baseten.co

AttributeIonRouterFireworks AI InferencePre-optimized Model APIs
ProviderCumulus Labscumuluslabs.io$0 raisedFireworks AIfireworks.ai$327M raised · Series CBasetenbaseten.co$2.1B raised · Series F
Founded202520222019
Sells ToB2BEnterpriseEnterprise
Pricing ModelB2B SubscriptionRecurringRecurring, Software, Usage-based
OwnershipVenture-backed private companyVenture CapitalEquity, Venture Capital
IonRouter

Provider Cumulus Labscumuluslabs.io$0 raised

Founded 2025

Sells To B2B

Pricing Model B2B Subscription

Ownership Venture-backed private company

Fireworks AI Inference

Provider Fireworks AIfireworks.ai$327M raised · Series C

Founded 2022

Sells To Enterprise

Pricing Model Recurring

Ownership Venture Capital

Pre-optimized Model APIs

Provider Basetenbaseten.co$2.1B raised · Series F

Founded 2019

Sells To Enterprise

Pricing Model Recurring, Software, Usage-based

Ownership Equity, Venture Capital

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