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Grok Build 0.1 vs Kimi K2 (0905)

At a glance

xAI's agentic build model for autonomous software engineering.

256K ctx$1.00/$2.00 per M

September 2025 checkpoint of Kimi K2 with improved capabilities.

262K ctx$0.60/$2.50 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-06-15
Coding
Real-World Coding70.8%
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper14%
Coding
Real-World Coding—
Specs
256K
Context
16K
Max output
May 2026
Released
262K
Context
100K
Max output
Sep 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.00/M tokens
Output20%$2.00/M tokens
Cache read$0.20/M tokens
Web search$0.005/search
Live pricing, shown before you run
Input40%$0.60/M tokens
Output$2.50/M tokens
Chat with Grok Build 0.1Go to model
Chat with Kimi K2 (0905)Go to model
Frequently Asked Questions: Grok Build 0.1 vs Kimi K2 (0905)▼

Which is better, Grok Build 0.1 or Kimi K2 (0905)?

▼

Both Grok Build 0.1 and Kimi K2 (0905) are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Grok Build 0.1 or Kimi K2 (0905)?

▼

Kimi K2 (0905) has a lower blended cost. Grok Build 0.1: $1.00 input / $2.00 output. Kimi K2 (0905): $0.60 input / $2.50 output.

Which has a larger context window, Grok Build 0.1 or Kimi K2 (0905)?

▼

Kimi K2 (0905) has a larger context window: Grok Build 0.1 supports 256K tokens vs Kimi K2 (0905) at 262K tokens.

Do both Grok Build 0.1 and Kimi K2 (0905) support vision?

▼

Grok Build 0.1 supports vision/image input, but Kimi K2 (0905) does not.

What are the key differences between Grok Build 0.1 and Kimi K2 (0905)?

▼

Key differences: only Grok Build 0.1 supports vision input; only Grok Build 0.1 offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Grok Build 0.1 and Kimi K2 (0905) for free on idapt.app to see which performs better for your specific needs.

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