# Fly.io: what AI models say (September 2026)

Source: Memetik Index, https://www.memetik.ai/vendors/fly-io
Website: https://fly.io

Fly.io was named in 28 of 50 AI answers across 1 category. Best position: App hosting for startups, 56% answer share, ranked #7, named first in 0%.

## What Fly.io is

Fly.io provides Linux computers for AI agents, tools and applications. It is for teams and developers running coding agents, personal agents, MCP servers, untrusted code and applications built by agents.

Its Sprites sleep when an agent stops, then resume with their filesystem and services preserved. Fly Machines run applications in hardware-isolated virtual machines. The platform automatically checkpoints Sprites and supports rollback. Connectors allow Sprites to reach external services without receiving credentials directly. Billing stops when a Sprite is unused, with charges based on tool calls or stored bytes.

Pricing: Billing stops when nobody is using a Sprite, and users pay only for the tool calls or stored bytes they use.
(From Fly.io's own website, read 2026-09-02.)

## By category

| Category | Rank | Answer share | Named first | Models |
|---|---|---|---|---|
| App hosting for startups (https://www.memetik.ai/index/app-hosting) | #7 of 18 | 56% | 0% | GPT-5.6 Sol, ChatGPT, GPT-5.6 Luna, Claude Opus 5, Claude, Claude Fable 5, Gemini, Gemini 3.5 Flash, Perplexity |

## What the models said

> "If you expect persistent processes, real-time connections, or multi-region infrastructure, choose Fly.io."
> — GPT-5.6 Luna, App hosting for startups

> "If you expect serious scale or need fine-grained control, go with AWS or Fly.io."
> — Claude Fable 5, App hosting for startups

> "If you want your backend server running in London, Tokyo, and New York simultaneously with a globally replicated database, Fly.io is unparalleled."
> — Gemini 3.5 Flash, App hosting for startups

> "Render / Fly.io / self-hosted VPS: good if you need more control over backend processes, but they generally require more operational work than Vercel."
> — Perplexity, App hosting for startups