2026 Audit Report

Luma Genie 2 vs Spark 4.0

Is Luma Genie 2 worth the premium? Our automated audit reveals a 98% cost difference in production environments.

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

Axiom Verdict

"CRITICAL ARBITRAGE DETECTED. Spark 4.0 offers a massive 98.2% cost reduction vs Luma Genie 2. Unless you specifically require Luma's ecosystem lock-in, migration is mandatory for solvency."

Key Metrics

Axiom Snapshot
MetricLuma Genie 2Spark 4.0
Input / 1M￥1,500.00￥27.00
Output / 1M￥0.00￥54.00
Cache Read-￥15.00
Context WindowN/A128K
Max OutputGLB4K
MultimodalYesNo
LatencyTBDTBD
Best FitPrototypingEducation

Action Plan

  • Migrate high-volume workloads to Spark 4.0 for immediate cost relief.
  • Keep Luma Genie 2 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

MetricLuma Genie 2Spark 4.0
Input / 1M￥1,500.00￥27.00
Output / 1M￥0.00￥54.00
Cache Read￥0.00￥15.00

Use Case Analysis

Luma Genie 2 Wins
  • Prototyping
Spark 4.0 Wins
  • Education

FAQ

Which model is cheaper: Luma Genie 2 or Spark 4.0?
Spark 4.0 shows a 98% cost advantage based on current input pricing.
When should I choose Luma Genie 2?
Luma Genie 2 is best for Prototyping.
How does the context window compare?
Luma Genie 2 supports N/A context vs Spark 4.0 at 128K.
Which model is better for high-volume routing?
Spark 4.0 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

Luma Genie 2
Spark 4.0

Cost Scaling (Monthly)

Luma Genie 2 vs Spark 4.0: 2026 Cost Audit | AxiomGrid