Predict Virality
Before You Post
Test thousands of audience reactions in seconds. Run your content through Viralcast — a simulated audience of 10,000 digital twins — before you ship. See what resonates, what falls flat, and ship only what wins.
How It Works
Three steps from draft to Viralcast-cleared winner.
Upload
Drop your video, image, or hook into Viralcast. It scores it on 5 factors: hook, pacing, emotion, clarity, CTA.
# Upload a draft to Viralcast
from liquidcortex_viralcast import Viralcast
viralcast = Viralcast(api_key="lc_viralcast_...")
draft = viralcast.upload("hook_v1.mp4")Simulate
10,000 digital twins react to your content based on Big Five personality and engagement traits. Viralcast returns a virality score and per-factor suggestions.
# Pulse 10K simulated reactions verdict = await viralcast.simulate( draft_id=draft.id, platform="tiktok" ) # verdict.score → 0..100 # verdict.factors → hook/pacing/...
Ship the winner
A/B test up to 5 variants, see which one wins the Viralcast verdict, and ship only what cleared the bar.
# Compare up to 5 variants results = await viralcast.ab_test( variants=[v1, v2, v3, v4, v5] ) winner = results.top() # Only ship what cleared the bar
The 5-Factor Rubric
Every draft gets scored on the five things that actually drive engagement. Hook, pacing, emotion, clarity, CTA — plus a full A/B test layer on top.
Hook Score
Measure the first 3 seconds against Viralcast-validated patterns. Know whether your opener earns the scroll-stop before you ever publish.
Pacing Analysis
Frame-by-frame attention curve from the simulated audience. See exactly where the 10,000 twins drop off — and why.
Emotion Resonance
Measure which emotion the simulated audience experiences — joy, surprise, curiosity, awe — and whether it matches your creative intent.
Clarity Check
Does the simulated audience understand what you are saying or selling? Surface comprehension gaps before the real audience does.
CTA Strength
Measured intent-to-act from the simulated audience. Pulse every call-to-action for downstream conversion signal, not just likes.
5-Variant A/B Test
Run up to 5 hooks side-by-side. Ship only the variant that cleared the Viralcast bar. Shelf the rest without burning a post slot.
Three workflows I built Viralcast to run
Viralcast isn’t “AI virality scoring.” It’s a 10,000-twin simulated audience you can interrogate. These are the three jobs I built it to handle first. If yours isn’t on this list, email me at [email protected] — that’s how I figure out card four.
Cut your $4,800/mo creator agency
Drop in 247 candidate hooks for your TikTok account. Viralcast runs them past 10,000 simulated viewers matched to your follower demographics. The winning hook beat your last post’s engagement by 31%. Whole test took 6 minutes.
Reverse-engineer 50 LinkedIn posts
Paste your competitor’s last 50 LinkedIn posts. Viralcast scores each against the 2026 algorithm — carousel weight 1.9x, video reach down 200%, dwell-time-king, long-form 800-1000 word sweet spot. Surface the 3 patterns they’re winning with that you’re not.
Change the price mid-simulation
Run a launch post sim. Mid-flight, swap the price from $99 to $69 — watch the engagement curve shift live. Then change the audience from solo founders to RevOps directors. Same content, different reaction. Ask “why did Twin #4,237 share this?” and Viralcast exposes the decision trail.
I priced Starter at $39/mo because the engine makes zero LLM calls — heuristics + Monte Carlo, AST-test-enforced in src/methodologies/market_research/social_layer.py. The math holds at 95%+ gross margin. You don’t pay for someone else’s GPU bill.
Viralcast Pricing
Pricing is being finalized for launch. Join the waitlist to lock early-access terms.
Billed $468/year — save $120
For solo creators testing content before shipping. 7-day trial, no credit card required.
- ✓50 Viralcast runs/mo
- ✓5 variants per test
- ✓3 platforms supported
- ✓Basic engagement traits
- ✓Community support
Billed $2,388/year — save $480
For agencies and teams shipping content at scale. 7-day trial, no credit card required.
- ✓500 Viralcast runs/mo
- ✓Unlimited variants
- ✓Priority Viralcast compute
- ✓Custom audience segments
- ✓API access
- ✓Email & in-app support
Custom enterprise pricing
For agencies, in-house content orgs, and B2B buyers running dozens of campaigns.
- ✓Unlimited Viralcast runs
- ✓Dedicated Viralcast compute
- ✓Custom audience segments
- ✓SSO + audit log export
- ✓API + webhooks
- ✓Named CSM + onboarding
Frequently Asked Questions
Viralcast is a simulated audience of 10,000 digital twins — each one carrying a distinct Big Five personality and engagement profile. When you upload a draft, every twin reacts as an individual viewer would, giving you a distribution of responses rather than a single algorithmic guess. Think of it as a pre-flight test audience for every piece of content you ship.
Viralcast currently supports TikTok, Instagram Reels, and YouTube Shorts. Each platform has its own pacing and hook expectations, so Viralcast calibrates its scoring accordingly. More platforms will be added based on launch demand.
Viralcast is a research-preview product. Accuracy is currently being calibrated against real engagement data; we do not publish a single accuracy number until that calibration completes. We would rather ship honest framing than a fabricated benchmark.
API access is available on Viralcast Pro. SDKs for Python and Node.js are coming soon. If you have a specific integration need for launch, let us know on the waitlist form and we will prioritize accordingly.
Most virality tools score content against past viral patterns — effectively predicting yesterday. Viralcast simulates a future audience: 10,000 digital twins with distinct personalities react to your content before you publish, so you see a distribution of reactions instead of a lookback score.
Know Before You Post
Join the Viralcast waitlist and ship only content that cleared Viralcast.