2026 Audit Report

Suno v4 Pro vs Yi Lightning

Is Suno v4 Pro worth the premium? Our automated audit reveals a 38% cost difference in production environments.

Last updated: Sep 21, 2026Sources: AxiomGrid Model Wiki · Provider pricing pagesQuality: HIGH

Axiom Verdict

"Suno v4 Pro provides a solid 37.5% arbitrage opportunity. We recommend routing L1/L2 traffic here, while keeping Yi Lightning for complex arbitration (L3)."

Key Metrics

Axiom Snapshot
MetricSuno v4 ProYi Lightning
Input / 1M￥7.50￥12.00
Output / 1M￥0.00￥24.00
Cache Read-￥3.60
Context WindowN/A200K
Max OutputAudio4K
MultimodalYesNo
LatencyTBDTBD
Best FitSongsInference

Action Plan

  • Route L1/L2 traffic to Yi Lightning and reserve Suno v4 Pro for complex tasks.
  • Pilot a two-week A/B traffic split to validate latency and quality.
  • Lock a fallback plan for peak load periods.

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

MetricSuno v4 ProYi Lightning
Input / 1M￥7.50￥12.00
Output / 1M￥0.00￥24.00
Cache Read￥0.00￥3.60

Use Case Analysis

Suno v4 Pro Wins
  • Songs
Yi Lightning Wins
  • Inference

FAQ

Which model is cheaper: Suno v4 Pro or Yi Lightning?
Yi Lightning shows a 38% cost advantage based on current input pricing.
When should I choose Suno v4 Pro?
Suno v4 Pro is best for Songs.
How does the context window compare?
Suno v4 Pro supports N/A context vs Yi Lightning at 200K.
Which model is better for high-volume routing?
Yi Lightning is the recommended L1/L2 router for cost efficiency.
Do cache discounts materially change costs?
Yes. Cache pricing can shift effective input costs by 10-90% depending on hit rate.
How often is this comparison updated?
This audit refreshes as model pricing changes. Last updated Sep 21, 2026.

Performance Radar

Suno v4 Pro
Yi Lightning

Cost Scaling (Monthly)

Suno v4 Pro vs Yi Lightning: 2026 Cost Audit | AxiomGrid