tokevenClaudevsGPT
Claude Sonnet 4.5 vs GPT 4.1 Nano
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 4.5
Mid-tierGPT 4.1 Nano
Fast / BudgetInput $/MTok
$3.00
$0.10
Output $/MTok
$15.00
$0.40
Cache discount
90% off
75% off
Context
200K
1,047.576K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Claude Sonnet 4.5
GPT 4.1 Nano
Guidance
When to use Claude Sonnet 4.5 vs GPT 4.1 Nano
Choose Claude Sonnet 4.5 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 4.1 Nano when...
- -Cost matters: 97% cheaper on input tokens
- -You need a larger context window (1,047.576K vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 4.5
GPT 4.1 Nano
100K tokens
$0.66
$0.02Cheaper
1M tokens
$6.60
$0.19Cheaper
10M tokens
$66.00
$1.90Cheaper
FAQ
When should I use Claude Sonnet 4.5 instead of GPT 4.1 Nano?
Claude Sonnet 4.5 and GPT 4.1 Nano perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 4.1 Nano cheaper than Claude Sonnet 4.5?
Yes. GPT 4.1 Nano input costs $0.10/MTok vs $3.00/MTok for Claude Sonnet 4.5, saving 97% on input.
What are the context window sizes for Claude Sonnet 4.5 and GPT 4.1 Nano?
Claude Sonnet 4.5 has a 200K token context window. GPT 4.1 Nano has a 1,047.576K 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 4.5 and GPT 4.1 Nano 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.