Anthropic vs OpenAI
OpenAI leads in package downloads at 3x; OpenAI has raised more funding at $171.7B; Anthropic leads in active contributors with 6 (30d); OpenAI leads in npm dependents with 10.9K; both compete in Foundation Models. Updated daily with live metrics.
Key Differences
OpenAI leads in package downloads with 247.6M per month compared to 87.8M for Anthropic. OpenAI has 30.2K GitHub stars versus 2.9K for Anthropic. Anthropic attracted 6 contributors in the last 30 days compared to 4 for OpenAI. OpenAI is depended on by 10.9K npm packages versus 4.2K for Anthropic.
OpenAI has raised $171.7B in total funding, while Anthropic has raised $58.7B. Anthropic's most recent round was Series G, while OpenAI's most recent round was Venture. both companies operate in the Foundation Models category.
Anthropic received 2.4K Hacker News mentions in the last 30 days compared to 1.2K for OpenAI. Anthropic accounts for 36.4% of Hacker News discussion in its category.
Select Companies to Compare
Anthropic: 87.8M downloads/mo, 2.9K GitHub stars, 6 active contributors, 4.2K dependents, $58.7B funded vs
OpenAI: 247.6M downloads/mo, 30.2K GitHub stars, 4 active contributors, 10.9K dependents, $171.7B funded
Source: AI-Buzz AI company database.
- •OpenAI leads in package downloads with 247.6M/mo (3x Anthropic)
- •OpenAI has 30.2K GitHub stars (10x more)
- •Anthropic has 6 active contributors (30d) (2x OpenAI)
- •OpenAI has 10.9K npm dependents (3x more than Anthropic)
- •OpenAI has raised more funding at $171.7B
← Scroll to compare →
| Metric | Anthropic | OpenAI |
|---|---|---|
| Website | anthropic.com → | openai.com → |
| Description | AI safety company behind Claude. OpenAI's main competitor. | Creator of ChatGPT and GPT-4. The company that kicked off the generative AI boom. |
| Total Funding | $58.7B | $171.7B✓ |
| Last Funding | Series G Feb 2026 | Venture Feb 2026 |
| Developer Adoption | ||
| npm Downloads (30d) Source: npm registryUpdates: DailyNote: Only tracks npm, not yarn/pnpm installs | 27.2M | 55.9M✓ |
| PyPI Downloads (30d) Source: PyPI (pypistats.org)Updates: Daily | 60.5M | 191.6M✓ |
| Total Downloads (30d) | 87.8M+0% | 247.6M+0%✓ |
| Active Contributors (30d) Source: GitHub APIUpdates: Daily | 6✓ | 4 |
| npm Dependents Source: Libraries.io APIUpdates: DailyNote: Counts direct and dev dependents | 4.2K | 10.9K✓ |
| HN Discussion Share | 36.4% of HN mentions | 17.7% of HN mentions |
| Status | Private | Private |
| HN Mentions (30d) Source: Hacker News (Algolia API)Updates: Daily | 2.4K✓ | 1.2K |
| HN Mentions Trend (30d) | - | - |
| GitHub Stars Source: GitHub APIUpdates: Daily | 2.9K | 30.2K✓ |
| Founded | 2021 | 2015 |
| Primary Category | ||
| Data Last Updated | ||
Key Differences: Anthropic vs OpenAI
In developer adoption, OpenAI leads with 247.6M package downloads per month — roughly 3x the 87.8M downloads Anthropic receives. Both companies have packages on npm and PyPI.
OpenAI has raised $171.7B in total funding compared to Anthropic's $58.7B. Anthropic's latest round was a Series G in 2026, while OpenAI's latest round was a Venture in 2026.
On GitHub, OpenAI has 30.2K GitHub stars, 10x more than Anthropic's 2.9K, and both have active contributor communities (Anthropic: 6, OpenAI: 4 in the last 30 days).
In community signals, Anthropic leads in Hacker News mindshare with 2.4K mentions in the past 30 days compared to 1.2K for OpenAI. Also, OpenAI has 10.9K npm dependents (3x more), indicating deeper ecosystem integration.
Both Anthropic and OpenAI operate in the Foundation Models space, making them direct competitors for developer mindshare.
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