Pexels API alternative for AI agents
The Pexels API is a free keyword search over the Pexels library of stock photos and videos under the Pexels License. Lightdrift searches openly licensed images by meaning or by reference image and returns per-result license and attribution data, through an API or an MCP server.
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Lightdrift vs Pexels API at a glance
| Lightdrift | Pexels API | |
|---|---|---|
| Collection | 1,852,370 captioned Creative Commons and public domain images from 17 sources | Photos and videos from photographers in 170 countries; library size not published (source) |
| Search | Natural-language (semantic) search: multimodal embeddings of each image and its caption, then reranking | Keyword search, available in 28 languages (source) |
| Search by image | Yes: by uploaded image, image URL, or image plus text; find similar by asset ID (paid plans) | Not documented (source) |
| License data per result | Yes: normalized license, commercial and derivative flags, attribution string, and source link on every result | No license field; every item is under the Pexels License (source) |
| License | Varies per image (CC0, public domain, CC BY, CC BY-SA and others); commercial-use licenses by default | Pexels License: free commercial use, attribution not required; no selling unaltered copies; no redistributing on other stock or wallpaper platforms (source) |
| Price | Free plan with 500 credits a month (up to 5,000 results); paid plans from $29 a month | Free (source) |
| Rate limits | Free: 30 requests a minute, 1,000 a day. Paid: up to 1,000 a minute | 200 requests an hour and 20,000 a month by default; higher limits free on request (source) |
| MCP server | Official remote MCP server at https://lightdrift.ai/mcp | No official MCP server; community servers exist (source) |
Pexels API terms that matter for agents
- API users must show a prominent link to Pexels and credit photographers when possible. (source)
- Apps may not copy the core functionality of Pexels. (source)
- The terms prohibit compiling content to replicate a similar or competing service, and bulk or systematic copying. (source)
When Pexels is the better choice
- You need free stock video as well as photos.
- Lifestyle and contemporary stock imagery fits your content.
- Your volume fits within 20,000 requests a month.
When Lightdrift is the better choice
- Your agent searches with full sentences or a reference image, not keywords.
- You need specific real subjects from sources like iNaturalist, Wikimedia Commons, the Smithsonian, and NASA.
- You need a machine-readable license and attribution string on every result.
- You want an MCP server your agent can call directly.
Lightdrift reports licenses as declared by each source and does not provide legal clearance; see rights answers. Competitor details were checked against their own documentation on September 27, 2026. Something out of date? Email hello@lightdrift.ai.
Other comparisons: Unsplash API, Pixabay API, Openverse API.
