Staxly

Anthropic API vs Cal.com

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Open-source scheduling infrastructure — the self-hostable Calendly alternative

Anthropic website ↗Cal.com 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 ↗

Cal.com

Free (Cloud)
$0. 1 user. Unlimited event types. Unlimited meetings. Cal branding.
Free
Self-Hosted (OSS)
Free forever. AGPL-3.0. Docker/K8s deploy. Full feature parity with cloud.
$0 base (usage-based)
Teams
$12/user/mo. Round-robin, collective events, routing forms, Cal Video, Workflows.
$12/mo
Organizations
$37/user/mo. SSO, advanced routing, dashboards, analytics, dedicated support.
$37/mo
Enterprise
Custom. SAML, HIPAA, dedicated deployments, security reviews.
Custom
Cal.com website ↗

Free-tier quotas head-to-head

Comparing opus-4-7 on Anthropic API vs free on Cal.com.

MetricAnthropic APICal.com
discount batch50 % off—

Features

Anthropic API · 0 features

    Cal.com · 16 features

    • Availability — Multiple schedules per user.
    • Buffer Time — Padding between meetings.
    • Cal Video — Built-in video conferencing.
    • Embed — Inline/popup/floating-button embeds.
    • Event Types — One-on-one, group, collective, round-robin.
    • Insights Dashboard — Booking trends + team analytics.
    • Paid Bookings — Stripe integration for paid appointments.
    • Platform API — Embed scheduling in your SaaS.
    • Recurring Events — Weekly/monthly recurring bookings.
    • Round-Robin — Distribute bookings across team.
    • Routing Forms — Route leads by answers.
    • Self-Host — Deploy to your infra.
    • SSO — SAML + OIDC.
    • Timezone Detection — Auto-detect viewer timezone.
    • Webhooks — Outbound events.
    • Workflows — Automated email/SMS reminders.

    Developer interfaces

    KindAnthropic APICal.com
    CLIClaude Code CLIcal CLI (self-host)
    SDKGo SDK, Java SDK, Python SDK, Ruby SDK, TypeScript SDK (@anthropic-ai/sdk)@calcom/embed-react
    RESTAWS Bedrock, Google Vertex AI, Microsoft Azure AI, REST API (Messages + Agents)Cal.com REST API v2, Platform API (embed in SaaS)
    OTHER—Cal.com Dashboard, Cal.com Webhooks
    Staxly is an independent catalog of developer platforms. Some links to Anthropic API and Cal.com 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.

    Want this comparison in your AI agent's context? Install the free Staxly MCP server.