tokevenClaudevsGPT
Claude Sonnet 4.6 vs GPT 5.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 4.6
Mid-tierGPT 5.5
FlagshipInput $/MTok
$3.00
$5.00
Output $/MTok
$15.00
$30.00
Cache discount
90% off
90% off
Context
200K
128K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
92
vs
91
Code Review
95
vs
90
Summarization
90
vs
89
Q&A
88
vs
90
Extraction
86
vs
87
Reasoning
88
vs
95
Classification
84
vs
85
Creative Writing
85
vs
91
Claude Sonnet 4.6
GPT 5.5
Guidance
When to use Claude Sonnet 4.6 vs GPT 5.5
Choose Claude Sonnet 4.6 when...
- -You need strong code review (confidence 95 vs 90)
- -You need strong code generation (confidence 92 vs 91)
- -You need strong summarization (confidence 90 vs 89)
- -Cost matters: 40% cheaper on input tokens
- -You need a larger context window (200K vs 128K)
Choose GPT 5.5 when...
- -You need strong reasoning (confidence 95 vs 88)
- -You need strong creative writing (confidence 91 vs 85)
- -You need strong q&a (confidence 90 vs 88)
- -You need strong extraction (confidence 87 vs 86)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 4.6
GPT 5.5
100K tokens
$0.66Cheaper
$1.25
1M tokens
$6.60Cheaper
$12.50
10M tokens
$66.00Cheaper
$125.00
FAQ
When should I use Claude Sonnet 4.6 instead of GPT 5.5?
Claude Sonnet 4.6 outperforms GPT 5.5 for Code Generation, Code Review, Summarization. It costs $3.00/$15.00 per million tokens (input/output).
Is GPT 5.5 cheaper than Claude Sonnet 4.6?
GPT 5.5 input costs $5.00/MTok, which is 67% more than Claude Sonnet 4.6 at $3.00/MTok.
What are the context window sizes for Claude Sonnet 4.6 and GPT 5.5?
Claude Sonnet 4.6 has a 200K token context window. GPT 5.5 has a 128K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.