The OpenAI SDK pulls 11.8M NPM downloads per week. The Anthropic SDK pulls 5.6M. But which one is growing faster, has better developer sentiment, and fits your pricing needs? Starting today, you can answer those questions in seconds with our new comparison pages.
What the Comparison Pages Show
- NPM & PyPI downloads — total and weekly, with 7-day growth trends
- GitHub stars & forks — real-time repository metrics
- Developer sentiment — positive, negative, and neutral from Reddit and Hacker News
- Pricing tiers — side-by-side plan comparisons
- Benchmark scores — where available (SWE-bench, HumanEval, etc.)
- Historical trends — up to 2+ years of adoption data (Professional tier)
How It Works
Go to /compare, search for any two tools in our registry, and hit Compare. The page renders a side-by-side breakdown in under a second. Every data point comes from our scrapers that hit NPM, PyPI, GitHub, Reddit, Hacker News, and Stack Overflow daily.
You can also jump directly to a comparison using the URL pattern /compare/tool-a-vs-tool-b. For example, /compare/cursor-vs-github-copilot gives you the full Cursor vs GitHub Copilot breakdown instantly.
Popular Comparisons to Start With
What Data Powers the Comparisons
Every comparison page pulls from the same 6 data sources that power the rest of Vibe Data:
| Source | Metric | Update Frequency |
|---|---|---|
| NPM Registry | Total & weekly downloads | Daily |
| PyPI | Total & monthly downloads | Daily |
| GitHub API | Stars, forks, watchers | Daily |
| Mention count, score, comments | Daily | |
| Hacker News | Mention count, score, comments | Daily |
| Stack Overflow | Questions, views, answers | Daily |
SDK Download Snapshot
Here is where the top SDKs stand as of :
| SDK | Total Downloads | Weekly Downloads |
|---|---|---|
| OpenAI SDK | 50.5M | 11.8M |
| Anthropic SDK | 22.7M | 5.6M |
| LangChain Core | 11.8M | 2.7M |
| LlamaIndex | 333,327 | 94,953 |
See how these numbers compare side-by-side with our Anthropic SDK vs OpenAI SDK comparison, or explore the LangChain vs LlamaIndex framework battle.
Built for Decision-Makers
Engineering managers evaluating whether to switch from Copilot to Cursor. DevRel teams benchmarking their SDK against competitors. Investors tracking which tools are gaining momentum. The comparison pages give you the data to make informed decisions instead of relying on marketing claims.
Every comparison page includes structured data (Schema.org markup) so search engines and AI assistants can parse the metrics directly. The data is the same data that powers our dashboard, weekly reports, and API.
Compare Any Two AI Dev Tools Now
Pick any two tools from our registry and get instant, data-backed comparisons.
Start Comparing →Methodology
All data is collected daily from public sources. NPM download counts come from the npm registry API. GitHub metrics come from the GitHub REST API. Reddit and Hacker News mentions are tracked by our scraping infrastructure that monitors relevant subreddits and front page stories. Stack Overflow questions are tracked via their public API. For full details, see our data methodology page.