Kie.ai
A single API key that reaches the current video, image, music and text models: Veo 3.1, Seedance 2.0, Kling 3.0, GPT Image 2, Nano Banana, Suno v5.5 and more. You pay per generation with credits that never expire, and a failed task costs nothing. Every call is asynchronous: you get a task_id back, then the result lands on your callback URL or when you query the task. That design is what makes it something an agent like Claude Code can drive.
Strengths
- One key, one task format and one balance across dozens of models, instead of ten provider accounts
- Pay per generation, credits with no expiry date, and failed tasks are not charged
- Per-key caps (hourly, daily, total) and an IP allowlist: you bound what an agent is able to spend
Limitations
- A reseller, not the provider: Kie itself states its overall stability may be slightly lower than the official APIs
- An uncapped key under a looping agent is a bottomless bill: you set the limits before, not after
- You call raw models: no studio, no point-and-click camera control, everything goes through the prompt and code
Best for
- A designer or PM who has Claude Code generate post or mockup visuals in batches
- Trying several video or image models on the same brief before choosing which provider to commit to