2026 Audit Report

HeyGen v4 vs Suno v4 Pro

Is HeyGen v4 worth the premium? Our automated audit reveals a 100% cost difference in production environments.

Last updated: Sep 22, 2026Sources: AxiomGrid Model Wiki · Provider pricing pagesQuality: MEDIUM

Axiom Verdict

"CRITICAL ARBITRAGE DETECTED. Suno v4 Pro offers a massive 100.0% cost reduction vs HeyGen v4. Unless you specifically require HeyGen's ecosystem lock-in, migration is mandatory for solvency."

Key Metrics

Axiom Snapshot
MetricHeyGen v4Suno v4 Pro
Input / 1M￥18,000.00￥7.50
Output / 1M￥0.00￥0.00
Cache Read--
Context WindowN/AN/A
Max OutputN/AAudio
MultimodalYesYes
LatencyTBDTBD
Best FitAvatarsSongs

Action Plan

  • Migrate high-volume workloads to Suno v4 Pro for immediate cost relief.
  • Keep HeyGen v4 only for edge-case arbitration and premium reasoning.
  • Set a weekly cost audit to prevent pricing drift.

Methodology

  • Pricing is normalized to cost per 1M input/output tokens for direct comparison.
  • Arbitrage gap compares current input pricing against the higher-priced model.
  • Quality tier reflects pricing completeness, context window, and use-case coverage.

Pricing Matrix

MetricHeyGen v4Suno v4 Pro
Input / 1M￥18,000.00￥7.50
Output / 1M￥0.00￥0.00
Cache Read￥0.00￥0.00

Use Case Analysis

HeyGen v4 Wins
  • Avatars
Suno v4 Pro Wins
  • Songs

FAQ

Which model is cheaper: HeyGen v4 or Suno v4 Pro?
Suno v4 Pro shows a 100% cost advantage based on current input pricing.
When should I choose HeyGen v4?
HeyGen v4 is best for Avatars.
How does the context window compare?
HeyGen v4 supports N/A context vs Suno v4 Pro at N/A.
Which model is better for high-volume routing?
Suno v4 Pro is the recommended L1/L2 router for cost efficiency.
Do cache discounts materially change costs?
Cache pricing is not published for at least one model; treat cache savings as unknown.
How often is this comparison updated?
This audit refreshes as model pricing changes. Last updated Sep 22, 2026.

Performance Radar

HeyGen v4
Suno v4 Pro

Cost Scaling (Monthly)

HeyGen v4 vs Suno v4 Pro: 2026 Cost Audit | AxiomGrid