Staxly

Anthropic API vs Fly.io

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Run your app close to users, globally

Anthropic website ↗Fly.io website ↗

Pricing tiers

Anthropic API

Opus 4.7 — usage
Input $5 / output $25 / cache-write $6.25 / cache-read $0.50 per 1M tokens. Batch = 50% off.
Custom
Sonnet 4.6 — usage
Input $3 / output $15 / cache-write $3.75 / cache-read $0.30 per 1M tokens. Batch = 50% off.
Custom
Haiku 4.5 — usage
Input $1 / output $5 / cache-write $1.25 / cache-read $0.10 per 1M tokens. Batch = 50% off.
Custom
Anthropic website ↗

Fly.io

Pay-as-you-go
No monthly fee. Machines billed per second. Free allocations: ~3 small shared machines + 3 GB volumes.
$0 base (usage-based)
Shared CPU 1x — 256 MB
Entry VM. 1 shared vCPU, 256 MB RAM. ~$2.02/month continuously on.
$2/mo
Performance 1x — 2 GB
Dedicated 1 vCPU, 2 GB RAM.
$32/mo
Reservation — Shared (1 yr)
$36/year for $5/mo credit (40% savings).
$36/mo
Shared CPU 8x — 16 GB
8 shared vCPU, 16 GB RAM.
$89/mo
Performance 16x — 128 GB
Dedicated 16 vCPU, 128 GB RAM.
$1014/mo
Enterprise
Custom. Dedicated capacity, SLA.
Custom
Fly.io website ↗

Free-tier quotas head-to-head

Comparing opus-4-7 on Anthropic API vs pay-as-you-go on Fly.io.

MetricAnthropic APIFly.io
discount batch50 % off—

Features

Anthropic API · 0 features

    Fly.io · 14 features

    • Auto Stop/Start — Machines auto-stop when idle, start on request (like scale-to-zero).
    • Certs — Let's Encrypt + wildcard certs managed.
    • Fly GPU — A100/L40S/A10 on-demand GPU machines.
    • Fly Kubernetes (FKS) — Managed Kubernetes on Fly machines.
    • Fly Machines — Firecracker microVMs. Start in <1s. Run any Docker image.
    • Fly Postgres — Managed Postgres via Supabase partnership (2024). Also legacy self-run Postgres …
    • fly-replay headers — Route request to another region at app level.
    • Fly Volumes — Persistent SSD attached to a Machine. Encrypted at rest.
    • Global Anycast — Single IP routes to the closest region automatically.
    • LiteFS — Distributed SQLite with primary/replica across regions.
    • Private Networks — 6PN WireGuard mesh. Connect machines across regions privately.
    • Secrets — Encrypted env vars propagated to all regions.
    • Tigris (partner) — S3-compatible storage for Fly apps. By partner.
    • Upstash Redis (partner) — Managed Redis via Upstash.

    Developer interfaces

    KindAnthropic APIFly.io
    CLIClaude Code CLIflyctl CLI
    SDKGo SDK, Java SDK, Python SDK, Ruby SDK, TypeScript SDK (@anthropic-ai/sdk)—
    RESTAWS Bedrock, Google Vertex AI, Microsoft Azure AI, REST API (Messages + Agents)Machines API
    GRAPHQL—Fly GraphQL API
    OTHER—Fly Postgres (wire)
    Staxly is an independent catalog of developer platforms. Outbound links to Anthropic API and Fly.io are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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