Luma AI API vs MiniMax Video API

Luma AI API

Dollar prices per clip, $0.30 for 5 seconds at 720p, no credits to convert. Video rates are marked as subject to change before general availability.

MiniMax Video API

2K with stereo audio at $0.13 a second, 768P at $0.08. No statement found on whether API inputs train models, and the privacy policy needs a browser.

Luma AI API

1. Send model ray-3.2 and type video, with resolution and duration inside video. Older model names are rejected
2. Poll GET /v1/generations/{id} until completed or failed, then copy the presigned URL
3. On 429, read detail. Rate limit exceeded means wait Retry-After, Too many concurrent jobs means wait for a job to finish
4. Use keyframes with keyframe_indexes for 10 second clips. start_frame and end_frame only work at 5 seconds

MiniMax Video API

1. Use POST /v2/video_generation for H3 and poll GET /v2/query/video_generation/{task_id}. Tasks stay queryable for 7 days
2. Set ratio for text-to-video. adaptive isn't allowed there
3. Pass callback_url to skip polling. Your endpoint must echo the challenge within 3 seconds
4. A 402 means the balance is empty and a 422 means moderation blocked the content. Don't retry either unchanged