tokevenClaudevsMoonshot (Kimi)
Claude Sonnet 5 vs Kimi K2
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierKimi K2
Mid-tierInput $/MTok
$2.00
$0.95
Output $/MTok
$10.00
$4.00
Cache discount
90% off
83% off
Context
1M
256K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
68
vs
0
Code Review
96
vs
0
Summarization
64
vs
0
Q&A
89
vs
0
Extraction
70
vs
0
Reasoning
89
vs
0
Classification
86
vs
0
Creative Writing
62
vs
0
Claude Sonnet 5
Kimi K2
Guidance
When to use Claude Sonnet 5 vs Kimi K2
Choose Claude Sonnet 5 when...
- -You need a larger context window (1M vs 256K)
- Similar performance; consider provider preference or ecosystem fit.
Choose Kimi K2 when...
- -Cost matters: 53% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Sonnet 5
Kimi K2
100K tokens
$0.44
$0.19Cheaper
1M tokens
$4.40
$1.86Cheaper
10M tokens
$44.00
$18.65Cheaper
FAQ
When should I use Claude Sonnet 5 instead of Kimi K2?
Claude Sonnet 5 and Kimi K2 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K2 cheaper than Claude Sonnet 5?
Yes. Kimi K2 input costs $0.95/MTok vs $2.00/MTok for Claude Sonnet 5, saving 53% on input.
What are the context window sizes for Claude Sonnet 5 and Kimi K2?
Claude Sonnet 5 has a 1M token context window. Kimi K2 has a 256K 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 5 and Kimi K2 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.