tokevenClaudevsMoonshot (Kimi)
Claude Opus 4.8 vs Kimi K3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 4.8
FlagshipKimi K3
FlagshipInput $/MTok
$5.00
$3.00
Output $/MTok
$25.00
$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
63
vs
0
Code Review
94
vs
0
Summarization
69
vs
0
Q&A
85
vs
0
Extraction
73
vs
0
Reasoning
89
vs
0
Classification
80
vs
0
Creative Writing
81
vs
0
Claude Opus 4.8
Kimi K3
Guidance
When to use Claude Opus 4.8 vs Kimi K3
Choose Claude Opus 4.8 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Kimi K3 when...
- -Cost matters: 40% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.8
Kimi K3
100K tokens
$1.10
$0.66Cheaper
1M tokens
$11.00
$6.60Cheaper
10M tokens
$110.00
$66.00Cheaper
FAQ
When should I use Claude Opus 4.8 instead of Kimi K3?
Claude Opus 4.8 and Kimi K3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K3 cheaper than Claude Opus 4.8?
Yes. Kimi K3 input costs $3.00/MTok vs $5.00/MTok for Claude Opus 4.8, saving 40% on input.
What are the context window sizes for Claude Opus 4.8 and Kimi K3?
Claude Opus 4.8 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 Opus 4.8 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.