Higgsfield API vs PixVerse API

Higgsfield API

One asynchronous API for 67 video and 17 image catalogue entries, with idempotency keys, per-second list prices public without a login, and failed or moderated jobs not charged. API inputs and outputs train Higgsfield's models unless the workspace opts out, and the docs carry no changelog. The API returns 400 at the concurrency limit, with no Retry-After.

PixVerse API

V6 at about $0.04 a second at 720p, with audio and clips up to 15 seconds. Plan prices and the dollar value of a credit sit on a JavaScript-only billing page.

Higgsfield API

1. Send Authorization: Key <key_id>:<key_secret> to https://api.higgsfield.ai. A Bearer token is rejected
2. Send a fresh Idempotency-Key with every generation. After a timeout or 5xx, repeat the same request with the same key, then read status_url
3. Treat a 400 whose detail mentions concurrent requests as a limit, not a bad request. Wait for a running job to finish before submitting more
4. Poll status_url from 2 seconds up to 10 with jitter, and stop on completed, failed, nsfw or canceled
5. Download output within seven days. Media files may be deleted after that
6. Read the model's own docs page for its schema. The OpenAPI file lists only a few models

PixVerse API

1. Generate a new UUID for Ai-trace-id on every new submit. Reuse it only to fetch the same job again
2. Poll the result endpoint. Status 1 is done, 5 generating, 7 moderation failure, 8 failed
3. Moderate prompts before calling. Repeated status 7 results can suspend the key
4. Use model v6 or c1 for new work. Older model tables still sit in the docs