What "Multimodal API" Means Here
Most AI products touch more than one modality: a chatbot that also generates images, an app that turns prompts into video, a tool that reads a screenshot and writes code. A multimodal AI API exposes text (chat), image, and video generation behind one key and one request shape — so you build once instead of integrating a separate provider per capability.
Why Not Just Stitch Providers Together?
You can wire up OpenAI for chat, one vendor for images, another for video — but you'll maintain multiple SDKs, keys, bills, rate limits, and error models, and rebuild each time a better model ships. A unified gateway like LinkModel collapses that into one integration:
- Chat — Claude, GPT, Gemini, DeepSeek, GLM, Kimi, MiniMax
- Image — GPT Image 2, Nano Banana, Seedream
- Video — Seedance 2.0, Kling V3, Hailuo, Wan 2.6
Full catalog at linkmodel.ai/models.
What You Can Build
Multimodal apps chain modalities. A few patterns:
- Prompt → image → video — generate a hero still, then animate it. See image to video API.
- Screenshot → code — a multimodal LLM (Kimi K2.6) reads a UI mockup and writes the component.
- Chat + generation — an assistant that answers and produces images/clips inline.
- Content pipeline — LLM writes copy, image model makes visuals, video model produces the clip — one key throughout.
The build pattern is in build an AI app with multiple models.
One Request Shape
Text and generation endpoints stay consistent, so switching models is a string change:
# image
curl -X POST https://api.linkmodel.ai/api/v1/image-generation \
-H "Authorization: Bearer $LINKMODEL_API_KEY" -H "Content-Type: application/json" \
-d '{ "model": "seedream-5.0-pro", "prompt": "Hero image for a launch page, 2K" }'
# video (same key, same shape)
curl -X POST https://api.linkmodel.ai/api/v1/video-generation \
-H "Authorization: Bearer $LINKMODEL_API_KEY" -H "Content-Type: application/json" \
-d '{ "model": "seedance-2-0", "prompt": "Animate the hero into a 6s teaser with ambient audio" }'The Practical Benefits
- One integration, one bill, one set of docs — less to build and maintain.
- Model portability — adopt the best model per task, swap freely as the field moves.
- Predictable pricing — fixed per request, up to 30% below official, shown before each call.
- Route + cache to control cost across modalities — see how to reduce AI API costs.
Bottom Line
A multimodal AI API turns "integrate five providers" into "call one key" — the right foundation for any product that spans text, image, and video, and the easiest way to stay current as models change. Use-case guides: startups, SaaS, agencies.
Start free with a $1 credit and build across modalities on one key.