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GPT-5.4 Pro vs Claude Opus 4.8 — Premium AI Pricing
Opus 4.8 is 83% cheaper on input ($5 vs $30). Compare OpenAI's most expensive model with Anthropic's premium offering.
Pricing data verified: Jun 27, 2026
All Premium Models Compared
The premium AI models from major providers, ranked by input price.
| Model | Provider | Tier | Input (per 1M) | Output (per 1M) | Context |
|---|---|---|---|---|---|
| Claude Opus 4.8 | Anthropic | Premium | $5.00 | $25.00 | 1M |
| GPT-5.5 | OpenAI | Premium | $5.00 | $30.00 | 1.05M |
| Claude Mythos 5 | Anthropic | Premium | $10.00 | $50.00 | 1M |
| Claude Fable 5 | Anthropic | Premium | $10.00 | $50.00 | 1M |
| GPT-5.4 Pro | OpenAI | Premium | $30.00 | $180.00 | 400K |
Calculate Your Exact Costs
See the massive cost difference between these two premium models for your workload.
Which Should You Choose?
Most Premium Tasks
Code review, analysis, writing, general complex work.
Maximum Capability
Complex research, advanced math, multi-step reasoning.
Enterprise Deployment
Production workloads at scale with cost sensitivity.
Research & Analysis
Deep research, literature review, complex synthesis.
Code Generation
Complex code, architecture decisions, debugging.
Budget-Conscious Teams
Startups and small teams watching every dollar.
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Frequently Asked Questions
Is GPT-5.4 Pro or Claude Opus 4.8 cheaper?
Claude Opus 4.8 is much cheaper. It costs $5.00/$25.00 per 1M tokens while GPT-5.4 Pro costs $30.00/$180.00. That's 83% cheaper on input and 86% cheaper on output. At 1M tokens/month, Opus 4.8 costs $150 vs GPT-5.4 Pro's $2,100.
What is GPT-5.4 Pro used for?
GPT-5.4 Pro at $30/$180 is OpenAI's most capable model, designed for the most complex reasoning tasks — advanced mathematics, multi-step research, complex code generation. It's 6x more expensive than GPT-5.5 and Opus 4.8.
When should I use GPT-5.4 Pro vs Opus 4.8?
GPT-5.4 Pro ($30/$180) is for tasks requiring absolute maximum capability where cost is secondary. Opus 4.8 ($5/$25) handles 95% of premium tasks at 83% lower cost. Most users should start with Opus 4.8 and only use GPT-5.4 Pro for specialized high-stakes tasks.
How does GPT-5.4 Pro compare to GPT-5.5?
GPT-5.4 Pro ($30/$180) costs 6x more than GPT-5.5 ($5/$30). GPT-5.5 offers better value for most premium tasks. Only choose GPT-5.4 Pro for tasks requiring the absolute highest capability.
Can I use both models together?
Yes! A cost-effective pattern: use Opus 4.8 ($5/$25) for 90% of premium tasks and route only the most complex, high-stakes tasks to GPT-5.4 Pro ($30/$180). This gives you maximum capability where needed while keeping costs manageable.
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