Fly.io vs Vapi: what each really costs
Team size
Billing
Fly.io
No plan for this billing option
No paid plan to compare for this billing option.
Vapi
No plan for this billing option
No paid plan to compare for this billing option.
| 10 people | Fly.io | Vapi |
|---|---|---|
| Entry paid plan | No plan for this billing option | No plan for this billing option |
| Vendor price | ||
| Monthly cost | ||
| Annual cost | ||
| Per user / year | ||
| Billing commitment | Not recorded | Not recorded |
| Minimum seats | None stated | None stated |
| Free plan | No free plan listed | No free plan listed |
| Free trial | Not stated | Not stated |
Calculated by SpecEntry from official vendor prices. Taxes and optional add-ons are not included. Open each product page for every plan and the official source.
Fly.io vs Vapi: features
Key features as each vendor lists them. A feature missing from a list does not mean the product lacks it.
Fly.io
- Fly MachinesHardware-virtualized containers that launch instantly and run on demand.
- Isolated sandboxesHardware-isolated sandboxes for running untrusted or AI-generated code.
- Sprites environmentsEach Sprite is a self-contained environment ready in under a second.
- Checkpoint and restoreCheckpoint an entire environment and restore it after breaking changes.
- NVMe and object storageLocal NVMe for low latency plus global durable object storage.
- Agent-ready CLIs and MCPCLIs and MCP servers designed to be driven by AI agents.
- KVM hardware isolationApps run KVM hardware-isolated on Fly.io's own hardware.
Source:fly.io ·
Vapi
- Configurable voice agentsConfigure voice, conversation flow, telephony and integrations.
- Managed infrastructureVapi handles the infrastructure from prompt to production.
- Uptime guaranteesContractual uptime and performance guarantees with reserved capacity.
- Enterprise securityEnterprise sign-on, OAuth2 integrations and granular access controls.
- Low-latency scaleScales to millions of calls with sub-500ms latency.
- Conversation guardrailsBuilt-in guardrails prevent hallucinations and protect data integrity.
Source:vapi.ai ·
Fly.io vs Vapi pricing questions
How much do Fly.io and Vapi cost?
Fly.io paid plans start at $2.19 per month ($0.0030/hr), billed per second (Machine shared-cpu-1x 256MB). Vapi paid plans start at $0.05 per minute, plus provider costs (Vapi hosting).
Is Fly.io or Vapi cheaper for 5 users?
They cost the same for 5 users: $348 per year on their cheapest paid plans.
Is Fly.io or Vapi cheaper for 10 users?
They cost the same for 10 users: $348 per year on their cheapest paid plans.
Is Fly.io or Vapi cheaper for 25 users?
They cost the same for 25 users: $348 per year on their cheapest paid plans.