← All Models

Grok 4 vs Kimi K3

Grok 4 leads in 5 of 8 categories

Arena ELO

Grok 4

Cheaper

Grok 4

Faster

Grok 4

Detailed Comparison

CategoryGrok 4Kimi K3
ProviderxAI Moonshot AI
Context Window256K WIN128K
Input Price ($/1M)$0.2 WIN$0.6
Output Price ($/1M)$1 WIN$2.5
Arena ELO1491 WINN/A
Codingunknown N/A
Reasoningunknown N/A
Speed (tokens/sec)~45 t/s WINN/A
Open SourceNo Yes

Frequently Asked Questions

Which is cheaper, Grok 4 or Kimi K3?

Grok 4 is approximately 61% cheaper than Kimi K3 per million tokens.

Which is better for coding, Grok 4 or Kimi K3?

Grok 4 scores unknown on coding benchmarks, while Kimi K3 scores N/A.

Which has a larger context window?

Grok 4 supports 256K context, while Kimi K3 supports 128K.

Is Grok 4 or Kimi K3 open source?

Grok 4 is proprietary. Kimi K3 is open source.

Related Articles

Kimi K3 Benchmark Evaluation Guide for Coding Agents

Kimi K3 Proves Intelligence Still Costs Too Much

Grok 4.5 hits Cursor with $2/$6 pricing

Kimi K3 could pressure the middle tier of AI models

Kimi K3 turns model hype into harness work

Grok 4.5’s rise comes down to 5 numbers

More Comparisons

Grok 4 vs Claude Opus 4.5Grok 4 vs Llama 4 ScoutGrok 4 vs Claude Haiku 4.5Grok 4 vs Qwen 3.6Grok 4 vs Kimi K2.7 CodeGrok 4 vs DeepSeek V4 FlashGrok 4 vs Claude Sonnet 4.6Grok 4 vs Claude Fable 5Kimi K3 vs Claude Opus 4.5Kimi K3 vs Llama 4 ScoutKimi K3 vs Claude Haiku 4.5Kimi K3 vs Qwen 3.6Kimi K3 vs Kimi K2.7 CodeKimi K3 vs DeepSeek V4 FlashKimi K3 vs Claude Sonnet 4.6Kimi K3 vs Claude Fable 5