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Kimi K3 vs GPT 4.1 Nano

At a glance
MoonshotAIKimi K3

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

1.0M ctx$3.00/$15.00 per M
OpenAIGPT 4.1 Nano

Fastest and cheapest model in the GPT-4.1 series for low-latency applications.

641.0M ctx$0.10/$0.40 per M#62/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
MoonshotAIKimi K3
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-16
Capability
Capability—
Reasoning & Knowledge
Graduate Science93.5%Expert-Level43.5%
Math
Math Problems—Competition Math—Research Math—
Coding
Code Editing—
Agentic
Terminal Tasks88.3%
OpenAIGPT 4.1 Nano
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper
Capability
CapabilityECI64.4
Reasoning & Knowledge
Graduate Science48.9%Expert-Level—
Math
Math Problems70.0%Competition Math28.9%Research Math1.0%
Coding
Code Editing8.9%
Agentic
Terminal Tasks—
Specs
MoonshotAIKimi K3
1.0M
Context
16K
Max output
Jul 2026
Released
OpenAIGPT 4.1 Nano
1.0M
Context
33K
Max output
Apr 2025
Released
Capabilities
MoonshotAIKimi K3
Vision
Audio
Reasoning
OpenAIGPT 4.1 Nano
Vision
Audio
Reasoning
Pricing
MoonshotAIKimi K3
Live pricing, shown before you run
Input$3.00/M tokens
Output$15.00/M tokens
Cache read$0.30/M tokens
OpenAIGPT 4.1 Nano
Live pricing, shown before you run
Input$0.10/M tokens
Output$0.40/M tokens
Cache read$0.02/M tokens
Web search$0.01/search
Chat with Kimi K3Go to model
Chat with GPT 4.1 NanoGo to model
Frequently Asked Questions: Kimi K3 vs GPT 4.1 Nano▼

Which is better, Kimi K3 or GPT 4.1 Nano?

▼

Both Kimi K3 and GPT 4.1 Nano 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 K3 or GPT 4.1 Nano?

▼

GPT 4.1 Nano has a lower blended cost. Kimi K3: $3.00 input / $15.00 output. GPT 4.1 Nano: $0.10 input / $0.40 output.

Which has a larger context window, Kimi K3 or GPT 4.1 Nano?

▼

Kimi K3 has a larger context window: Kimi K3 supports 1M tokens vs GPT 4.1 Nano at 1M tokens.

Do both Kimi K3 and GPT 4.1 Nano support vision?

▼

Yes, both Kimi K3 and GPT 4.1 Nano support vision/image input.

What are the key differences between Kimi K3 and GPT 4.1 Nano?

▼

Key differences: GPT 4.1 Nano is significantly cheaper; only Kimi K3 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 K3 and GPT 4.1 Nano for free on idapt.app to see which performs better for your specific needs.

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