Isorun vs Shardflux

Isorun costs $0.025 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Isorun runs microVMs. Shardflux runs Firecracker microVMs and offers GPUs.

Updated Oct 15, 2026

Isorun

Isolated Linux microVMs from any Docker image.

Isolation: MicroVM
Free tier: $50 credit
Max session: Not listed

Visit site Isorun profile

Shardflux

Serverless VMs for cloud agents that park when idle and keep their state.

Isolation: Firecracker microVM
Free tier: 30-day Pro trial, no card needed
Max session: Not listed

Visit site Shardflux profile

What is different

8 fields differ. The rest are the same or not listed.

Field

Isorun

Shardflux

vCPU, per hour: Isorun: $0.025; Shardflux: $0.04
Storage: Isorun: Persistent disk $0.02 per GB-month for data stored; Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier: Isorun: $50 credit; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Isorun: Pay as you go; Shardflux: $9 / month
Billing: Isorun: Per second; Shardflux: Active CPU time only
Isolation: Isorun: MicroVM; Shardflux: Firecracker microVM
SDKs: Isorun: TypeScript; Shardflux: TypeScript, Python
Integrations: Isorun: LangChain, OpenAI Agents SDK, MCP; Shardflux: Claude Code, MCP

Full comparison

18 fields, at each provider's list price

Isorundocs.isorun.ai/getting-started/pricingdocs.isorun.ai

Shardfluxshardflux.dev/#pricingshardflux.dev

Pricing

vCPU, per hour: Isorun: $0.025; Shardflux: $0.04
RAM, per GiB-hour: Isorun: $0.015; Shardflux: $0.015
Storage: Isorun: Persistent disk $0.02 per GB-month for data stored; Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier: Isorun: $50 credit; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Isorun: Pay as you go; Shardflux: $9 / month
Billing: Isorun: Per second; Shardflux: Active CPU time only

Limits

Max session: Isorun: Not listed; Shardflux: Not listed
Idle stop: Isorun: After 5 minutes; Shardflux: Not listed
Largest sandbox: Isorun: Not listed; Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes: Isorun: Not listed; Shardflux: Up to 200

Platform

Isolation: Isorun: MicroVM; Shardflux: Firecracker microVM
GPU: Isorun: Not listed; Shardflux:
Snapshots: Isorun:; Shardflux:
Pause and resume: Isorun:; Shardflux:

Developer

SDKs: Isorun: TypeScript; Shardflux: TypeScript, Python
Integrations: Isorun: LangChain, OpenAI Agents SDK, MCP; Shardflux: Claude Code, MCP

Trust

License: Isorun: Not listed; Shardflux: Not listed
BYOC: Isorun: Not listed; Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Size

Isorun

Shardflux

1 vCPU · 2 GiB: Isorun: $0.055; Shardflux: $0.070
2 vCPU · 4 GiB: Isorun: $0.110; Shardflux: $0.140
4 vCPU · 8 GiB: Isorun: $0.220; Shardflux: $0.280

Compute only, at list rates.

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Which one fits

Based on the fields above

Isorun fits when

You want to pay only for usage, with no plan fee.
You use LangChain or the OpenAI Agents SDK.
You want the lower list price: $0.110 against $0.140 an hour for 2 vCPU and 4 GiB.

Shardflux fits when

You need GPUs.
You use Claude Code.
Your code waits a lot: CPU is billed only while it is in use.

More comparisons

See all comparisons

Isorun

Shardflux

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Isorun fits when

Shardflux fits when

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