Hosted platform - verified
Fly.io Sprites is a hosted sandbox platform from Fly.io, read from its own pages on October 18, 2026. Isolation: Hardware-isolated. Status: GA (inferred). 5 price rows, each in Fly.io Sprites's own unit.
Vendor: Fly.io. Docs: docs.fly.io. Pricing: fly.io. Compare every agent sandbox
In the provider's own unit, verbatim. Nothing is converted; the directory compares a price only with others in the same unit.
| Price | Unit, as stated | Quote and source | Notes |
|---|---|---|---|
| $0.0385 | per CPU-hour (cumulative CPU usage)Directory block: Per CPU-hour | “$0.0385 /CPU-hour” | - |
| $0.021875 | per GB-hour memory (actual usage)Directory block: Per GB-hour | “$0.021875 /GB-hour” | - |
| $0.000683 | per GB-hour hot storageDirectory block: Per GB-hour | “HOT $0.000683 /GB-hour” | - |
| $0.000027 | per GB-hour cold storageDirectory block: Per GB-hour | “COLD $0.000027 /GB-hour” | - |
| $100 | per month, Hero plan (1,200 CPU-hours, 4,800 RAM GB-hours, 150 GB storage included)Directory block: Per month | “Hero ($100/mo) includes 1,200 CPU-hours, 4,800 RAM GB-hours, and 150 GB of storage” | - |
$30 trial credit
“$30 in trial credits”
Note: Not stated in checked pages.
Goes warm immediately when idle (no compute charge), may later go cold
“While idle, there are no compute charges and your full filesystem is preserved.”
Persistent disk survives sleep; 100 GB volume
“The volume is 100 GB, and you're billed on the storage you actually use”
Automatic and manual filesystem checkpoints
“Snapshot the whole filesystem in about a second.”
Hardware-isolated
“Sprites are persistent, hardware-isolated Linux environments for running arbitrary code.”
Note: Not stated in checked pages.
Note: Not stated in checked pages.
Connectors make outbound calls without credentials entering the Sprite (not a network egress firewall)
“The code running in the Sprite doesn't need the provider credential in hand to use it.”
JavaScript/TypeScript SDK
“import { SpritesClient } from '@fly/sprites';”
Python SDK
“pip install sprites-py”
Go SDK
“import "github.com/superfly/sprites-go"”
Note: Not stated in checked pages.
Note: Not stated.
Note: Not stated.
GA (inferred from published pricing and plans)inferred
“All resources are billed hourly, based on actual usage.”
Vendor-stated, not measured
Filesystem checkpoint in about a second (checkpoint, not cold start)Vendor-stated
“Snapshot the whole filesystem in about a second.”
Docs disagree
“All resources are billed hourly, based on actual usage.”
Research note: Docs disagree: the pricing page says "All resources are billed hourly, based on actual usage.", while the docs comparison table (Serverless Functions vs Sprites) gives Sprites per-second billing ("Per-second"). Recorded as unresolved.
$0.0385 per CPU-hour (cumulative CPU usage); $0.021875 per GB-hour memory (actual usage); $0.000683 per GB-hour hot storage; $0.000027 per GB-hour cold storage; $100 per month, Hero plan (1,200 CPU-hours, 4,800 RAM GB-hours, 150 GB storage included). Prices are in the provider's own units as of October 18, 2026. Free tier: $30 trial credit.
Hardware-isolated.
Not stated. Not stated in checked pages. Idle behavior: Goes warm immediately when idle (no compute charge), may later go cold.
Connectors make outbound calls without credentials entering the Sprite (not a network egress firewall).
Last verified from each provider's own docs, pricing pages and repositories; every quote was string-matched against the page that day. Not a benchmark: prices are in the provider's own unit and change without notice, so check the linked source before you commit.
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