tokevenGPTvsMoonshot (Kimi)
GPT 4o vs Kimi K2
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 4o
Mid-tierKimi K2
Mid-tierInput $/MTok
$2.50
$0.95
Output $/MTok
$10.00
$4.00
Cache discount
50% off
83% off
Context
128K
256K
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
GPT 4o
Kimi K2
Guidance
When to use GPT 4o vs Kimi K2
Choose GPT 4o when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Kimi K2 when...
- -Cost matters: 62% cheaper on input tokens
- -You need a larger context window (256K vs 128K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
GPT 4o
Kimi K2
100K tokens
$0.47
$0.19Cheaper
1M tokens
$4.75
$1.86Cheaper
10M tokens
$47.50
$18.65Cheaper
FAQ
When should I use GPT 4o instead of Kimi K2?
GPT 4o and Kimi K2 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Kimi K2 cheaper than GPT 4o?
Yes. Kimi K2 input costs $0.95/MTok vs $2.50/MTok for GPT 4o, saving 62% on input.
What are the context window sizes for GPT 4o and Kimi K2?
GPT 4o has a 128K 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 GPT 4o 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.