Higgsfield API (site) gives developers one async API to reach 50+ generative media models for images and video. It's pay-per-use with no free tier: image generation starts around $0.0021/image (Kling 2.5 with a 50% discount applied), and video runs $0.042–$0.318 per second depending on the model, with up to 50% off select models currently listed.
If you want to test or build without committing money upfront, here are options that actually offer a free tier or are free entirely.
| Product | Free tier | Starts at | Best for |
|---|---|---|---|
| hiapi | Yes (200 free credits) | $0.015/mo | Trying multiple image/video/audio models before paying |
| API for Image, video and Music Creation | Yes (300 credits/month) | $8.33/mo | Ongoing free monthly quota plus a paid credit plan |
| KaleidoImages | Yes, fully free | Not stated | Pulling from an existing library of AI images via API |
| AI ImgGen | Yes, fully free | Not stated | No-login, unlimited image generation with one model |
hiapi
hiapi (site) is a single API covering leading AI image, video, and audio generation models, similar in shape to Higgsfield's multi-model approach. New accounts get a free API key with 200 credits to test before paying. After that, pricing is pay-as-you-go and varies by model: images from $0.015–$0.107, video from $0.082 up. It suits developers who want to compare several model providers through one integration. The limitation: 200 credits will run out quickly if you're testing video models, which cost more per generation than images.
API for Image, video and Music Creation
This API from budgetpixel.com, listed on our site as API for Image, video and Music Creation, covers image, video, and music generation. It offers a free plan with 300 credits every month, which renews rather than being a one-time trial. Paid plans start at $8.33/month (billed annually) for 11,000 credits, with pay-as-you-go credit packs also available from $10. It suits developers who want a recurring free allowance rather than a one-off trial. The limitation: 300 monthly credits cover light, occasional use only, not production traffic.
KaleidoImages
KaleidoImages (site) is a REST API giving access to a library of over 17,000 pre-generated AI images, with search, filters, seeds, and metadata. It's genuinely free with no paid tier — the creator only accepts optional donations. This suits projects that need stock-style AI imagery rather than on-demand generation of new images from prompts. The limitation: it serves existing images from a fixed library, so it can't generate new content from your own custom prompts the way Higgsfield's models can.
AI ImgGen
AI ImgGen (site) is a free AI image generator built on the FLUX.1-Dev model, with no login required and unlimited generations stated. It suits individuals or quick prototyping work that needs one solid image model without setting up billing. An optional VIP subscription is mentioned for premium features, though no pricing details are given. The limitation: it's a single-model tool, not a multi-model API, so it doesn't replace Higgsfield's breadth of 50+ models or its video generation capability.
How to choose
If you need Higgsfield's multi-model breadth (many image and video models behind one API) but want to test free first, hiapi or the budgetpixel API are closer matches, since both are pay-as-you-go APIs with a starting free allowance. If you just need AI-generated images and don't need to run new custom generations, KaleidoImages' free image library may be enough. If you want a single free image model with no API key or billing setup, AI ImgGen works, but it won't cover video or model variety.
FAQ
Does Higgsfield API have a free tier? No, Higgsfield API is pay-per-use only, starting at $0.0021 per image.
Which alternative is closest to Higgsfield's multi-model API design? hiapi and the budgetpixel API for Image, video and Music Creation both offer one API across multiple generation models with a free starting allowance.
Which alternative is completely free with no paid tier? KaleidoImages and AI ImgGen are both listed as free with no stated paid plan, though AI ImgGen mentions an optional VIP subscription without pricing details.