yangmao.ai · Free API intent page

Anthropic API Free API Guide

Anthropic API has a tracked free API path, with $5 and rate limit notes of 5 RPM.

Use one OpenLLMAPI key → Open official provider →

Quick verdict

Free API: $5
Rate limits: 5 RPM
Best model starting point: Claude Opus 4
China access: proxy/relay likely needed

Provider fit matrix

Best fit Fast provider evaluation, prototypes, and fallback routing

Watch out Free credits and rate limits can change without warning

Production fallback Keep at least one compatible backup provider before shipping

Production readiness checklist

Quota gate Start inside $5; log usage before adding retries or batch jobs.

No-card check Assume billing may be required unless the official dashboard says otherwise.

Regional smoke test Run signup, dashboard, DNS, TLS, and first API call checks from mainland China before launch.

Source freshness Snapshot date: 2026-05-16; official quota and pricing can change without notice.

Python setup snapshot

Start with the smallest possible chat completion, then move the key to your server-side secret manager before production.

from anthropic import Anthropic

client = Anthropic(api_key="your-key")

message = client.messages.create(
    model="claude-sonnet-4-20250514",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello!"}]
)
print(message.content[0].text)

cURL smoke test

Use this to verify endpoint, auth header, model name, response shape, and quota before adding SDK abstractions.

curl https://api.provider.example/v1/chat/completions \
  -H "Authorization: Bearer $CLAUDE_API_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Claude Opus 4",
    "messages": [{"role": "user", "content": "Hello from yangmao.ai"}]
  }'

Free API and pricing notes

$5 free credits on signup

Access and production risk

Relay or proxy may be needed

Requires proxy. Stable API, moderate latency.

Decision checklist

Check Anthropic API free credits and rate limits.

Compare same-category providers and China access needs.

Pick the provider with the clearest no-card/free API path for testing.

Fallback CTA with tracked UTM

If you do not want to juggle provider keys, rate limits, and regional access, use openllmapi.com as a unified API fallback.

Try openllmapi with one key →

UTM: utm_source=yangmao.ai · utm_medium=seo · utm_campaign=provider · utm_content=claude-api-free-api

Source snapshot

Data source: yangmao.ai provider YAML tracker plus provider docs reviewed by the daily crawler. Official dashboards can change quota and pricing without notice; verify before production.

yangmao.ai provider id: claude-api
Official source: https://console.anthropic.com
Last updated: 2026-05-16
Free tier: N/A
API credits: $5
Rate limit: 5 RPM
Access note: Requires proxy. Stable API, moderate latency.

FAQ

Does Anthropic API have a free API?

Yes. Current yangmao.ai record: $5. Rate limit note: 5 RPM.

Is Anthropic API OpenAI-compatible?

This snapshot uses a provider-specific OpenAI SDK example. If your app requires one stable OpenAI-compatible endpoint, use an aggregator or relay after checking Anthropic API docs.

Can I use Anthropic API from China?

Anthropic API may need a proxy or relay from mainland China. Test latency and signup before production.

What should I do when Anthropic API credits run out?

Compare the alternatives below, check /en/free-ai-api/, or use the openllmapi CTA on this page as a one-key fallback with tracked UTM: campaign=provider, content=claude-api-free-api.