Staxly

Anthropic API vs Formspree

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Form backend as a service — point your HTML form at a URL and done

Anthropic website ↗Formspree 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 ↗

Formspree

Free
$0. 50 submissions/mo. 1 form. Formspree branding in emails. Basic spam filtering.
Free
Basic
$10/mo. 500 submissions/mo. Unlimited forms. Custom success redirect. Honeypot anti-spam.
$10/mo
Professional
$20/mo. 1,000 submissions/mo. reCAPTCHA, webhooks, integrations, rules engine.
$20/mo
Unlimited
$40/mo. 2,500 submissions. File uploads, team members, priority support.
$40/mo
Enterprise
Custom. SSO, SAML, HIPAA, high volume, dedicated support.
Custom
Formspree website ↗

Free-tier quotas head-to-head

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

MetricAnthropic APIFormspree
discount batch50 % off—

Features

Anthropic API · 0 features

    Formspree · 11 features

    • Custom Success Redirect — Redirect after submit.
    • Email Notifications — Submissions delivered to inbox.
    • File Uploads — Accept attachments (Unlimited).
    • IP Filtering — Block spam IPs.
    • React SDK — Hooks + state management.
    • Rules Engine — Conditional routing, auto-responders.
    • Spam Protection — Honeypot + reCAPTCHA + keyword filter.
    • Submission Analytics — Volume + source stats.
    • Team Members — Multi-user (Unlimited).
    • Webhooks — POST submissions to your server.
    • Zero Backend — HTML <form action> → email.

    Developer interfaces

    KindAnthropic APIFormspree
    CLIClaude Code CLI—
    SDKGo SDK, Java SDK, Python SDK, Ruby SDK, TypeScript SDK (@anthropic-ai/sdk)@formspree/core, @formspree/react
    RESTAWS Bedrock, Google Vertex AI, Microsoft Azure AI, REST API (Messages + Agents)Formspree REST API
    OTHER—Direct HTML Form Submit, Formspree Dashboard, Formspree Webhooks
    Staxly is an independent catalog of developer platforms. Some links to Anthropic API and Formspree may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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