SummitGovOnline

Grok 4 vs Kimi K3

Side-by-side comparison of pricing, capabilities, benchmarks, and use case fit.

X

Grok 4

xAI

Overall 89
fast
View model →
MA

Kimi K3

Moonshot AI

Overall 91
standard
View model →

Capability radar

Normalized coding, reasoning, writing, vision, context, and value

CodingReasoningWritingVisionContextValue
Grok 4Kimi K3
Comparison of Grok 4 vs Kimi K3
MetricGrok 4Kimi K3
Input Price / 1M$3.00$3.00
Output Price / 1M$15.00$15.00
Combined Price / 1M$18.00$18.00
Context Window256,0001,000,000
Coding Score9093
Reasoning Score9194
Vision Score8588
AudioNoNo
StreamingYesYes
Function CallingYesYes
Latency Tierfaststandard
Release Date4/9/20267/16/2026

Grok 4 — Strengths & Weaknesses

Strengths

  • Real-time knowledge angle
  • Fast
  • Tool use

Weaknesses

  • Smaller ecosystem than OpenAI/Anthropic

Kimi K3 — Strengths & Weaknesses

Strengths

  • 1M context
  • Frontier coding/reasoning
  • Native multimodal

Weaknesses

  • Premium output pricing
  • Newer ecosystem tooling

Use Case Verdicts

Coding

Kimi K3

Kimi K3 scores 93 vs 90 on coding benchmarks.

General Chat

Kimi K3

Kimi K3 leads on writing quality (90 vs 88).

Long Context

Kimi K3

Kimi K3 offers 1M tokens vs 256K.

Cost Efficiency

Grok 4

Grok 4 is cheaper at $18.00/M combined vs $18.00/M.

Enterprise Use

Kimi K3

Kimi K3 combines strong reasoning, tooling, and context for enterprise workloads.

Agent Workflows

Kimi K3

Kimi K3 is better suited for agentic workflows with tool use and coding capability.