CRITICALFailure Reference

Kling AI Anatomy & Motion Artifact — Pre-Generation Risk Reference

Technical Classification

Anatomical Topology & Coherence Failure

Kling produces strong static frames but anatomy degrades quickly under motion. Common failures: arms that bend in two directions, legs that detach and reattach mid-stride, fingers that count up or down across frames, torso geometry collapsing during rotation. Kling's support process is less structured than Google's but the platform does honour technical-failure refunds when documented properly.

How to identify this failure

✕Limb count changes across frames
✕Joint articulation reverses direction mid-motion
✕Body geometry collapses during rotation
✕Foot or hand detaches from limb
✕Subject morphs through multiple body shapes

Real generation examples

Prompt used

"Dancer performing a slow grand jeté, soft stage light"

Failure observed @ 0:02

Third arm appears at 0:02, right leg geometry collapses during landing at 0:04

Prompt used

"Runner mid-stride on a beach at sunrise"

Failure observed @ 0:03

Left foot detaches from leg at 0:03; reattaches incorrectly at 0:04

Documentation strength

If you need to escalate

HIGH — Kling honours technical-failure refunds; well-documented requests with specific terminology approve within 2-5 business days.

AVA is a pre-purchase prevention tool, not a post-purchase recovery tool. Platforms generally do not guarantee credit refunds for output-quality failures; goodwill credits are at each platform's discretion. The strength rating reflects how well-formed your support ticket can be, not a promised outcome.

Prevention + documentation steps

01
Score your prompt before you generate
Run your prompt through AVA's pre-flight scoring against the Anatomical Topology & Coherence Failure pattern. Green light = generate. Yellow/red = rewrite using the suggested fix before you commit credits.
02
Capture Generation ID + timestamp if it failed anyway
Find the Generation ID in the URL or share link. Note the exact time when the Anatomical Topology & Coherence Failure first appears (e.g. "failure first visible at 1.2s"). Timestamped evidence is significantly stronger than a general complaint.
03
Use the correct technical term in your support ticket
Describe this failure as "Anatomical Topology & Coherence Failure". This term maps to a recognised internal workflow in the support system and routes the ticket to the right team.
04
Submit via the correct support channel
Runway has no direct email intake. Pro+ plan: open the in-app AI Assistant (help widget bottom-right of app.runwayml.com), describe the failure with the technical term, attach evidence. Free/Standard plan: human support isn't available — your channel is Discord #community-help with @On Call - Moderators.

Frequently asked questions

Will Kling AI refund credits for anatomy failures?

Yes. Use "Anatomical Topology Failure" terminology, cite the Generation ID, timestamp the failure, and submit through Kling's support flow. Attach the PDF audit report for fastest processing.

Why does Kling produce limb artifacts on motion?

Kling's temporal consistency budget is allocated more aggressively to surface texture than to articulated-body topology. Under fast motion, the per-frame denoising drifts toward locally-plausible but globally-incoherent skeletal configurations.

Which Kling prompts highest-risk for anatomy failures?

Dance, sports, sprinting, multi-figure scenes, close-up hands. AVA's pre-flight scanner flags these patterns.

Score your prompt

Score your prompt against this failure mode in 30 seconds

Paste your prompt and the platform you intend to use. AVA returns a red/yellow/green score against this specific failure mode plus a concrete rewrite if the risk is high.

Install free All 105 failure modes

AVA Pro · founders' round

$50 for 6 months of unlimited scoring across all failure modes + personal failure-history dashboard. Locks in $13/mo grandfathered after.

Claim $50 founders