Staxly

Anthropic API vs Loops

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Email marketing for SaaS — loops, transactional, campaigns in one

Anthropic website ↗Loops 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 ↗

Loops

Free
1,000 subscribed contacts. 4,000 sends/month. All features. Loops footer on emails.
Free
Paid — 1.5k
1,500 contacts. Unlimited sends. No footer.
$15/mo
Paid — 5k
5,000 contacts. Unlimited sends.
$49/mo
Paid — 10k
10,000 contacts.
$99/mo
Paid — 25k
25,000 contacts.
$199/mo
Paid — 50k
50,000 contacts.
$349/mo
Custom
>100k contacts — contact sales.
Custom
Loops website ↗

Free-tier quotas head-to-head

Comparing opus-4-7 on Anthropic API vs free on Loops.

MetricAnthropic APILoops
discount batch50 % off—

Features

Anthropic API · 0 features

    Loops · 12 features

    • API Keys — Scoped keys for testing vs production.
    • Audiences (Segments) — Filter contacts by properties + event behavior.
    • Campaign Analytics — Open/click/unsubscribe rates, heatmaps, A/B significance.
    • Campaigns — One-off broadcasts to audience segments. Schedule + A/B test subject.
    • Contacts — Contact records with custom properties (strings, numbers, booleans, dates).
    • Email Editor — Visual block-based + Markdown + HTML modes.
    • Events — Send events to trigger loops/journeys or filter audiences.
    • Loops (Automations) — Event-triggered automation flows with delays + conditions.
    • Mailing Lists — Opt-in lists with subscribe/unsubscribe preferences per list.
    • Template Library — Pre-built templates for SaaS use cases (onboarding, digest, launch).
    • Transactional API — Send transactional emails (receipts, password resets) via /transactional endpoin…
    • Webhooks — Subscribe to contact/event changes.

    Developer interfaces

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

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