I’m currently building an automated workflow that generates social media posts. The idea is that every time a new caption is created, an AI image is automatically generated that visually matches the text.
I’ve been experimenting with rainfrog.ai and honestly I’m really impressed with the quality. The images look great and it handles references and styles very well.
The only problem is that Rainfrog.ai doesn’t have an API, which makes it impossible to integrate into my workflow.
What I’m looking for is a tool that can:
Generate high quality AI images
Use reference images (characters / products / style)
Work with prompts that change every time
Have an API key so I can automate it
Ideally generate images that match the context of a caption
Example use case:
Basically I want the image to adapt to the text automatically, but still keep a consistent visual style.
Does anyone know tools that can do this?
Preferably something similar in quality to Rainfrog but with an API.
Would really appreciate any suggestions.
Thanks!
This is by far the best and production grade AI image generation services tool according to me, also they provide free credits for you to play around, ofc the frontier models require credits but those would be really worth it here.
Leonardo.ai is probably your best bet here, it has a proper API with reference image support and you can lock in a consistent style across generations using their style presets or even train a custom model on your brand look. There’s actually a community node for it in n8n so you don’t even need to mess with the HTTP Request node manually.
you can make it more deterministic, ask ai to generate html template , fill in the dynamic caption values , generate image from html,
nodes to use would be , open ai (or some llm) , html to image (node) provided by pdfmunk, pdfapihub .
fal.ai is worth it — Ive been knee deep in it, flux-2 and a flux-kontext for auto-meme creation for an X personality i created. best costing I could find. handles reference images well via flux-kontext, dynamic prompts, and you just hit it with a standard HTTP Request node. Been using it in production good results.
Hey! For API-based AI image generation with style/reference support, the best options are fal.ai (great quality, LoRA support for consistent styles), Replicate (very flexible, runs Flux/SDXL), and Leonardo.ai (has built-in image guidance for character consistency).
That said, I had a similar problem and ended up solving a big part of it with templateson.com. You design a branded template once (or generate one with AI via a prompt), then inject your dynamic caption/text/image through their API on every run — always returns a clean, on-brand PNG. Plugs into n8n via the HTTP Request node in minutes, and there’s a free plan to test with.
You could even combine both: use fal.ai to generate the AI image, then pass it into a Templates On template to overlay your branding and caption on top.