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Gemini 3.1 Pro vs Kimi K3

At a glance

Google's frontier model with a large leap in core reasoning.

861.0M ctx$2.00/$12.00 per M#10/92

MoonshotAI's 2.8T-parameter flagship for complex coding, knowledge work, and long-horizon agent runs.

1.0M ctx$0.30/$11.94 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
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-10-02
Capability
CapabilityECI86.4
Reasoning & Knowledge
Graduate Science1%94.4%Expert-Level7%46.4%Factual Recall45%73.5%
Math
Competition Math95.6%Research Math36.9%
Coding
Real-World Coding80.6%
Agentic
Terminal Tasks80.2%Novel Reasoning28%77.1%Task Horizon6.4h
Reasoning
CodingInsufficient data
Sources:Epoch AI·Provider·OpenRouter· as of 2026-10-02
Cheaper29%
Capability
Capability—
Reasoning & Knowledge
Graduate Science93.5%Expert-Level43.5%Factual Recall50.6%
Math
Competition Math2%97.2%Research Math—
Coding
Real-World Coding—
Agentic
Terminal Tasks10%88.3%Novel Reasoning60.4%Task Horizon—
Specs
1.0M
Context
66K
Max output
Feb 2026
Released
1.0M
Context
256K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$12.00/M tokens
Reasoning$12.00/M tokens
Cache read5%$0.20/M tokens
Cache write$0.38/M tokens
Image input$2.00/M tokens
Audio input$2.00/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input85%$0.30/M tokens
Output1%$11.94/M tokens
Cache read$0.21/M tokens
Chat with Gemini 3.1 ProGo to model
Chat with Kimi K3Go to model
Frequently Asked Questions: Gemini 3.1 Pro vs Kimi K3▼

Which is better, Gemini 3.1 Pro or Kimi K3?

▼

Both Gemini 3.1 Pro and Kimi K3 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, Gemini 3.1 Pro or Kimi K3?

▼

Kimi K3 has a lower blended cost. Gemini 3.1 Pro: $2.00 input / $12.00 output. Kimi K3: $0.30 input / $11.94 output.

Which has a larger context window, Gemini 3.1 Pro or Kimi K3?

▼

Gemini 3.1 Pro has a larger context window: Gemini 3.1 Pro supports 1M tokens vs Kimi K3 at 1M tokens.

Do both Gemini 3.1 Pro and Kimi K3 support vision?

▼

Yes, both Gemini 3.1 Pro and Kimi K3 support vision/image input.

What are the key differences between Gemini 3.1 Pro and Kimi K3?

▼

Key differences: Kimi K3 is significantly cheaper. 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 Gemini 3.1 Pro and Kimi K3 for free on idapt.app to see which performs better for your specific needs.

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