Anthropic SDK vs OpenAI SDK

Head-to-head adoption data comparison based on real metrics

Data updated daily — latest collection:
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Anthropic SDK
SDK
Monthly Downloads
46.5M
Total: 46.5M
GitHub Stars
3,191
Forks
601
Open Issues
208
Description
Official Anthropic API client for Claude models
Visit website →
🤖
OpenAI SDK
SDK
Monthly Downloads
70.8M
Total: 70.8M
GitHub Stars
10,071
Forks
1,232
Open Issues
95
Description
Official OpenAI API client library for Node.js and Python
Visit website →

Side-by-Side Metrics

Metric Anthropic SDK OpenAI SDK
Monthly Downloads 46.5M 70.8M Leader
GitHub Stars 3,191 10,071 Leader
GitHub Forks 601 1,232 Leader
Open Issues 208 Leader 95
Community Mentions 0 0

Pricing

Anthropic SDK
No pricing data available
OpenAI SDK
  • GPT-5: Free
  • GPT-5: Free
  • GPT-4.1: Free
  • GPT-4.1: Free
  • Realtime API: Free

OpenAI SDK offers a free tier

Summary

OpenAI SDK leads in downloads with 2x more monthly downloads than Anthropic SDK, while OpenAI SDK leads in community popularity with 216% more GitHub stars than Anthropic SDK.

Historical Comparison

See how this comparison has changed over the last 30, 60, and 90 days with download and star trends plotted over time.

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About This Data

This comparison uses real adoption metrics collected daily from NPM, PyPI, GitHub, benchmark leaderboards, and pricing data sources. Download counts reflect cumulative totals and weekly/monthly snapshots from the most recent scraper run. All data is publicly verifiable.

Latest data collection: (scrapers run daily)

Sources: NPM Registry API, PyPI API, GitHub API, SWE-bench, Official Pricing Pages

View Anthropic SDK Details View OpenAI SDK Details Compare Other Tools

Last updated: | Data collected from NPM, PyPI, GitHub, and vendor pricing pages