tokevenClaudevsMoonshot (Kimi)
Claude Sonnet 5.5 vs Kimi K3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Sonnet 5.5
Mid-tierKimi K3
FlagshipInput $/MTok
$2.00
$3.00
Output $/MTok
$10.00
$15.00
Cache discount
95% 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
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 5.5
Kimi K3
Guidance
When to use Claude Sonnet 5.5 vs Kimi K3
Choose Claude Sonnet 5.5 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 5.5
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 5.5 instead of Kimi K3?
Claude Sonnet 5.5 and Kimi K3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K3 cheaper than Claude Sonnet 5.5?
Kimi K3 input costs $3.00/MTok, which is 50% more than Claude Sonnet 5.5 at $2.00/MTok.
What are the context window sizes for Claude Sonnet 5.5 and Kimi K3?
Claude Sonnet 5.5 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 5.5 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.