2026 Audit Report

GPT-5.2 Pro vs Claude 4 Opus

Is GPT-5.2 Pro worth the premium? Our automated audit reveals a 29% cost difference in production environments.

Last updated: Oct 15, 2026Sources: AxiomGrid Model Wiki · Provider pricing pagesQuality: HIGH

Axiom Verdict

"Claude 4 Opus provides a solid 28.6% arbitrage opportunity. We recommend routing L1/L2 traffic here, while keeping GPT-5.2 Pro for complex arbitration (L3)."

Key Metrics

Axiom Snapshot
MetricGPT-5.2 ProClaude 4 Opus
Input / 1M$21.00$15.00
Output / 1M$168.00$75.00
Cache Read-$1.50
Context Window512K200K
Max Output16K4K
MultimodalYesYes
LatencyTBDTBD
Best FitArbitrationArchitecture

Action Plan

  • Route L1/L2 traffic to Claude 4 Opus and reserve GPT-5.2 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

MetricGPT-5.2 ProClaude 4 Opus
Input / 1M$21.00$15.00
Output / 1M$168.00$75.00
Cache Read$0.00$1.50

Use Case Analysis

GPT-5.2 Pro Wins
  • Arbitration
Claude 4 Opus Wins
  • Architecture

FAQ

Which model is cheaper: GPT-5.2 Pro or Claude 4 Opus?
Claude 4 Opus shows a 29% cost advantage based on current input pricing.
When should I choose GPT-5.2 Pro?
GPT-5.2 Pro is best for Arbitration.
How does the context window compare?
GPT-5.2 Pro supports 512K context vs Claude 4 Opus at 200K.
Which model is better for high-volume routing?
Claude 4 Opus 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 15, 2026.

Performance Radar

GPT-5.2 Pro
Claude 4 Opus

Cost Scaling (Monthly)

GPT-5.2 Pro vs Claude 4 Opus: 2026 Cost Audit | AxiomGrid