What's free
Free plan: the Marengo Embed API for all input types (video, audio, image, text) at no cost, plus ~600 min indexing
Rate limits
Embed video/audio: 3,000 RPD, 25 RPM; embed text/image: 3,000 RPD, 600 RPM
The catch
No credit card for the Free plan, but indexed data expires after 90 days unless upgraded. Marengo produces multimodal embeddings. Not OpenAI-compatible.