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
1M
1.1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
57
vs
65
Code Review
95
vs
90
Summarization
61
vs
70
Q&A
88
vs
90
Extraction
71
vs
78
Reasoning
85
vs
90
Classification
84
vs
85
Creative Writing
69
vs
73
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)
- -Cost matters: 40% cheaper on input tokens
Choose GPT 5.5 when...
- -You need strong q&a (confidence 90 vs 88)
- -You need strong reasoning (confidence 90 vs 85)
- -You need strong classification (confidence 85 vs 84)
- -You need strong extraction (confidence 78 vs 71)
- -You need a larger context window (1.1M vs 1M)
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
$20.50
10M tokens
$66.00Cheaper
$205.00
FAQ
When should I use Claude Sonnet 4.6 instead of GPT 5.5?
Claude Sonnet 4.6 outperforms GPT 5.5 for Code Review. 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 1M token context window. GPT 5.5 has a 1.1M 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 Sonnet 4.6 and GPT 5.5 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.