2026 Audit Report

Runway Gen-4 vs Yi Lightning

Is Runway Gen-4 worth the premium? Our automated audit reveals a 100% cost difference in production environments.

Last updated: Oct 22, 2026Sources: AxiomGrid Model Wiki · Provider pricing pagesQuality: HIGH

Axiom Verdict

"CRITICAL ARBITRAGE DETECTED. Yi Lightning offers a massive 99.8% cost reduction vs Runway Gen-4. Unless you specifically require Runway's ecosystem lock-in, migration is mandatory for solvency."

Key Metrics

Axiom Snapshot
MetricRunway Gen-4Yi Lightning
Input / 1M￥6,750.00￥12.00
Output / 1M￥0.00￥24.00
Cache Read-￥3.60
Context WindowN/A200K
Max Output1 Min4K
MultimodalYesNo
LatencyTBDTBD
Best FitAdsInference

Action Plan

  • Migrate high-volume workloads to Yi Lightning for immediate cost relief.
  • Keep Runway Gen-4 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

MetricRunway Gen-4Yi Lightning
Input / 1M￥6,750.00￥12.00
Output / 1M￥0.00￥24.00
Cache Read￥0.00￥3.60

Use Case Analysis

Runway Gen-4 Wins
  • Ads
Yi Lightning Wins
  • Inference

FAQ

Which model is cheaper: Runway Gen-4 or Yi Lightning?
Yi Lightning shows a 100% cost advantage based on current input pricing.
When should I choose Runway Gen-4?
Runway Gen-4 is best for Ads.
How does the context window compare?
Runway Gen-4 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 Oct 22, 2026.

Performance Radar

Runway Gen-4
Yi Lightning

Cost Scaling (Monthly)

Runway Gen-4 vs Yi Lightning: 2026 Cost Audit | AxiomGrid