tokevenClaudevsGPT
Claude Opus 5.5 vs GPT 4
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 5.5
FlagshipGPT 4
FlagshipInput $/MTok
$4.00
$30.00
Output $/MTok
$20.00
$60.00
Cache discount
95% off
0% off
Context
1M
8K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
79
vs
0
Code Review
0
vs
0
Summarization
66
vs
0
Q&A
0
vs
0
Extraction
75
vs
0
Reasoning
92
vs
0
Classification
0
vs
0
Creative Writing
71
vs
0
Claude Opus 5.5
GPT 4
Guidance
When to use Claude Opus 5.5 vs GPT 4
Choose Claude Opus 5.5 when...
- -Cost matters: 87% cheaper on input tokens
- -You need a larger context window (1M vs 8K)
Choose GPT 4 when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 5.5
GPT 4
100K tokens
$0.88Cheaper
$3.90
1M tokens
$8.80Cheaper
$39.00
10M tokens
$88.00Cheaper
$390.00
FAQ
When should I use Claude Opus 5.5 instead of GPT 4?
Claude Opus 5.5 and GPT 4 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 4 cheaper than Claude Opus 5.5?
GPT 4 input costs $30.00/MTok, which is 650% more than Claude Opus 5.5 at $4.00/MTok.
What are the context window sizes for Claude Opus 5.5 and GPT 4?
Claude Opus 5.5 has a 1M token context window. GPT 4 has a 8K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Opus 5.5 and GPT 4 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.