GPT-5vsKimi K2
Kimi K2 is cheaper than GPT-5 at $0.57/M vs $1.25/M input tokens.
| Spec | GPT-5 | Kimi K2 |
|---|---|---|
| Input price | $1.25/M tokens | $0.57/M tokens |
| Output price | $10/M tokens | $2.3/M tokens |
| Context window | 400K tokens | — |
| Released | Aug 2025 | Jul 2025 |
| SWE-bench Verified | 74.9% | 65.8% |
Our Verdict
GPT-5
Kimi K2
Not enough votes to call it. On the specs, nothing separates them.
Kimi K2 takes Conversation. Kimi K2 costs 4.3x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5
Input
$1.25
Output
$10.00
Kimi K2
Input
$0.57
2.2× cheaper
Output
$2.30
4.3× cheaper
Kimi K2 is cheaper on both — 2.2× input, 4.3× output
Writing DNA
Style Comparison
Similarity
74%
Kimi K2 uses 53.8x more emoji
GPT-5
Kimi K2
65%Vocabulary66%
13wSentence Length19w
0.20Hedging0.34
0.2Bold3.3
4.6Lists3.4
0.00Emoji0.54
0.16Headings0.48
0.03Transitions0.05
Based on 16 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
More comparisons
Kimi K2 vs Ox AlphaNew provider
Kimi K2 vs Llama 4 MaverickNew provider
Kimi K2 vs Claude Opus 4New provider
Kimi K2 vs Claude Opus 4.1New provider
GPT-5 vs Qwen3 30B A3BNew provider
GPT-5 vs Qwen3 30B A3B Instruct 2507New provider
GPT-5 vs Qwen3 30B A3B Thinking 2507New provider
Kimi K2 vs Qwen3 CoderNew provider