tokevenGPTvsMoonshot (Kimi)
GPT 6 Luna vs Kimi K3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 6 Luna
Fast / BudgetKimi K3
FlagshipInput $/MTok
$0.10
$3.00
Output $/MTok
$0.50
$15.00
Cache discount
90% off
90% off
Context
922K
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
62
vs
0
Code Review
0
vs
0
Summarization
53
vs
0
Q&A
0
vs
0
Extraction
75
vs
0
Reasoning
82
vs
0
Classification
0
vs
0
Creative Writing
63
vs
0
GPT 6 Luna
Kimi K3
Guidance
When to use GPT 6 Luna vs Kimi K3
Choose GPT 6 Luna when...
- -Cost matters: 97% cheaper on input tokens
Choose Kimi K3 when...
- -You need a larger context window (1M vs 922K)
- 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.
GPT 6 Luna
Kimi K3
100K tokens
$0.02Cheaper
$0.66
1M tokens
$0.36Cheaper
$6.60
10M tokens
$3.65Cheaper
$66.00
FAQ
When should I use GPT 6 Luna instead of Kimi K3?
GPT 6 Luna and Kimi K3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K3 cheaper than GPT 6 Luna?
Kimi K3 input costs $3.00/MTok, which is 2900% more than GPT 6 Luna at $0.10/MTok.
What are the context window sizes for GPT 6 Luna and Kimi K3?
GPT 6 Luna has a 922K 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 GPT 6 Luna 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.