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Kimi K2 (0905) vs Gemini 4 Argon

At a glance

September 2025 checkpoint of Kimi K2 with improved capabilities.

262K ctx$0.60/$2.50 per M

Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents.

1.0M ctx$2.00/$10.00 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
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper73%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
262K
Context
98K
Max output
Sep 2025
Released
1.0M
Context
66K
Max output
Oct 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input70%$0.60/M tokens
Output75%$2.50/M tokens
Live pricing, shown before you run
Input$2.00/M tokens
Output$10.00/M tokens
Reasoning$10.00/M tokens
Cache read$0.10/M tokens
Cache write$0.19/M tokens
Image input$2.00/M tokens
Audio input$2.00/M tokens
Web search$0.01/search
Chat with Kimi K2 (0905)Go to model
Chat with Gemini 4 ArgonGo to model
Frequently Asked Questions: Kimi K2 (0905) vs Gemini 4 Argon▼

Which is better, Kimi K2 (0905) or Gemini 4 Argon?

▼

Both Kimi K2 (0905) and Gemini 4 Argon 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, Kimi K2 (0905) or Gemini 4 Argon?

▼

Kimi K2 (0905) has a lower blended cost. Kimi K2 (0905): $0.60 input / $2.50 output. Gemini 4 Argon: $2.00 input / $10.00 output.

Which has a larger context window, Kimi K2 (0905) or Gemini 4 Argon?

▼

Gemini 4 Argon has a larger context window: Kimi K2 (0905) supports 262K tokens vs Gemini 4 Argon at 1M tokens.

Do both Kimi K2 (0905) and Gemini 4 Argon support vision?

▼

Gemini 4 Argon supports vision/image input, but Kimi K2 (0905) does not.

What are the key differences between Kimi K2 (0905) and Gemini 4 Argon?

▼

Key differences: Kimi K2 (0905) is significantly cheaper; only Gemini 4 Argon supports vision input; only Gemini 4 Argon 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 Kimi K2 (0905) and Gemini 4 Argon for free on idapt.app to see which performs better for your specific needs.

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