tokevenClaudevsMoonshot (Kimi)
Claude Sonnet 5 vs Kimi K3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5
Mid-tierKimi K3
FlagshipInput $/MTok
$2.00
$3.00
Output $/MTok
$10.00
$15.00
Cache discount
90% off
90% off
Context
1M
1M
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 K3
Guidance
When to use Claude Sonnet 5 vs Kimi K3
Choose Claude Sonnet 5 when...
- -Cost matters: 33% cheaper on input tokens
Choose Kimi K3 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 Sonnet 5
Kimi K3
100K tokens
$0.44Cheaper
$0.66
1M tokens
$4.40Cheaper
$6.60
10M tokens
$44.00Cheaper
$66.00
FAQ
When should I use Claude Sonnet 5 instead of Kimi K3?
Claude Sonnet 5 and Kimi K3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K3 cheaper than Claude Sonnet 5?
Kimi K3 input costs $3.00/MTok, which is 50% more than Claude Sonnet 5 at $2.00/MTok.
What are the context window sizes for Claude Sonnet 5 and Kimi K3?
Claude Sonnet 5 has a 1M token context window. Kimi K3 has a 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 5 and Kimi K3 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.