HunyuanVideo 1.5 - Upgrade Checklist for Production Teams
Download printable cheat-sheet (CC-BY 4.0)08 Feb 2026, 00:00 Z
TL;DR
Treat HunyuanVideo 1.5 as a controlled upgrade, not a drop-in replacement.
Re-run a fixed benchmark pack, compare cost-per-usable-second, then phase rollout by use case.
Keep the original v1.0 baseline alive until quality and latency targets are met.
Context
This post is the version-specific companion to the original release overview:
HunyuanVideo - Tencent’s 13B-Parameter Open-Source AI Video (Research Overview).
1 Upgrade goal: measurable gains, not just newer weights
Before switching traffic to 1.5, define target deltas against your current v1.0 workflow:
- Prompt adherence (does output match intent without prompt overfitting?)
- Motion stability (fewer temporal artifacts across cuts and camera moves)
- Brand safety pass rate (fewer rejected generations)
- Throughput and cost (seconds per generation and usable output ratio)
If those deltas are not material in your environment, defer migration and keep v1.0 as default.
2 Four checks to run before production
| Check | How to test | Pass condition |
| Creative quality | Re-run your top prompt pack on both versions with fixed seeds | 1.5 wins on human review score |
| Temporal consistency | Evaluate shots with fast motion, occlusion, and subject turns | Artifact rate decreases |
| Ops reliability | Batch 100+ jobs under production concurrency | Error/retry rate is stable |
