ClaudevsGPT

Claude Opus 4.8 vs GPT 5.4 Mini

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Claude Opus 4.8

Flagship

GPT 5.4 Mini

Fast / Budget
Input $/MTok
$5.00
$0.75
Output $/MTok
$25.00
$4.50
Cache discount
90% off
90% off
Context
1,000K
272K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
95
vs
0
Code Review
94
vs
0
Summarization
88
vs
0
Q&A
85
vs
0
Extraction
82
vs
0
Reasoning
97
vs
0
Classification
80
vs
0
Creative Writing
93
vs
0
Claude Opus 4.8
GPT 5.4 Mini

Guidance

When to use Claude Opus 4.8 vs GPT 5.4 Mini

Choose Claude Opus 4.8 when...

  • -You need a larger context window (1,000K vs 272K)
  • Similar performance; consider provider preference or ecosystem fit.

Choose GPT 5.4 Mini when...

  • -Cost matters: 85% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
GPT 5.4 Mini
100K tokens
$1.10
$0.19Cheaper
1M tokens
$11.00
$1.87Cheaper
10M tokens
$110.00
$18.75Cheaper

FAQ

When should I use Claude Opus 4.8 instead of GPT 5.4 Mini?

Claude Opus 4.8 and GPT 5.4 Mini perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is GPT 5.4 Mini cheaper than Claude Opus 4.8?

Yes. GPT 5.4 Mini input costs $0.75/MTok vs $5.00/MTok for Claude Opus 4.8, saving 85% on input.

What are the context window sizes for Claude Opus 4.8 and GPT 5.4 Mini?

Claude Opus 4.8 has a 1,000K token context window. GPT 5.4 Mini has a 272K token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.