We tagged 132 1-star reviews across Runway, Higgsfield, Krea, Pollo, Pika, Luma, Sora, and Vidu. Between 42% and 78% cite billing predation, not bad output. AVA surfaces the real per-second cost, unlimited-tier gating, and first-try success rates before you commit. After you subscribe, the same engine scores every prompt against 105 failure modes.
No credit card on the free tier · Chrome · Brave · Edge · Arc
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Generations that fail
~33%
Aggregate across 8 video providers
Catalogued failure modes
105
Across 8 providers
Trustpilot 1-stars tagged
132
8 vendors · 8 months
Cost to install AVA
$0
Free tier · no card
Same prompt · four platforms · four failures
Kling 1.6
Same prompt
Google Veo 3.1
Same prompt
Seedance 2.0
Same prompt
Vidu Q2 Pro
Same prompt
Broken motion, garbled signs, melted hands, color drift. AVA learns the per-model failure pattern and warns you which provider will choke on which prompt — before the credit is spent.
What AVA does
Four signals run inside the extension — before you subscribe and while you draft — so the money you spend produces a clip you keep.
01 · Vendor reality check
Per-second cost (credits × failure rate), unlimited-tier gating rules, first-try success rates, and pricing-change history. Built from 132 tagged Trustpilot 1-stars across 8 vendors plus 8 months of fetch-intercept data.
02 · Prompt indicator
Red, yellow, green — trained on 105 catalogued failure modes across Runway, Luma, Sora, Pika, Kling, Veo, Hailuo, Vidu. Updates per keystroke. No cloud calls. Green light before the credit is spent.
03 · Rewrite suggestions
"Fingers in frame." "120fps slow-mo." "Neon text." Each red prompt gets a concrete rewrite, not a generic warning. Edit until the indicator turns.
04 · Personal failure history
Every generation feeds your private history. "You've hit hand-anatomy failure 7 times on Runway this month." The aggregate forecast learns which platform survives your prompt habits.
The math vendors do not publish
It is the list price divided by how often a generation works on the first try. AVA estimates that ratio before you click Generate so you can pick the vendor — and the prompt — that actually clears.
Effective cost per usable clip
On the vendors we track, a 35% first-try success rate turns a $0.50 disclosed cost into a $1.43 real cost. The disclosed price stays the same. Every red prompt you scrub before you click Generate moves you back toward $0.50.
list_price
What the vendor advertises. AVA reads the live page so you do not have to translate credits to dollars.
first_try_success_rate
Estimated from 105 catalogued failure modes plus your personal history. Climbs when your prompt scores green; the indicator names which phrase is dragging it down.
Full per-platform breakdown in the 132-review research corpus.
Under the hood
Install the extension and pick a vendor you are considering. AVA surfaces per-second cost, unlimited-tier gating, first-try success rates, and the public change history. Free on every tier.
After subscribing, AVA runs your prompt through 105 known failure modes per vendor — Runway, Luma, Sora, Pika, Kling, Veo, Hailuo, Vidu — and emits a red/yellow/green score in browser, zero API roundtrips.
When red, AVA names the specific phrase pulling the score down and offers a rewrite. Edit, watch the indicator climb, generate when the light is green.
Every generation feeds your history. After a few weeks the aggregate tells you which vendor is most likely to succeed on this specific prompt today.
Pricing
Vendor reality checks are unlimited on every tier. Pro unlocks unlimited prompt scoring, personal failure history, and silent-policy-change alerts.
Free
Pro
Business
Interactive L1 engine
Paste what you are about to send to Runway. The heuristic engine that runs inside the extension checks it in real time — no install required.
Paste a prompt to start diagnosis
← or load a sample
L1 checks heuristic rules only. Install the extension for failure-frame marking and audit reports.
Privacy-first architecture
Sign in with Google or email — that is it. Tokens are AES-GCM encrypted locally. No cloud AI vision calls. No prompts stored on our servers.
Session tokens are AES-GCM encrypted before local storage. No plaintext credentials touch disk.
All diagnosis is local L1 heuristics plus your manual marks. Zero AI-vision calls on our backend.
Heuristic rules fire client-side with zero latency. The warning appears as you type — no network roundtrip.
Extension source is readable. No obfuscation. CustomEvent-only page communication — no postMessage XSS surface.
Already paying a vendor that doesn't deliver?
Install in thirty seconds. Sign in free. AVA checks vendor reality on Runway, Higgsfield, Krea, Pollo, Pika, Sora, Luma, and Vidu — and scores every prompt you write after.
No credit card on the free tier · Chrome · Brave · Edge · Arc