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Kimi K3 vs o1

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
OpenAIo1

OpenAI's original frontier reasoning model with deep thinking.

75200K ctx$15.00/$60.00 per M#42/92
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
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science93.5%Expert-Level43.5%
Math
Math Problems—Competition Math—Research Math—
Coding
Code Editing—
Agentic
Terminal Tasks88.3%Task Horizon—
OpenAIo1
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.2
Reasoning & Knowledge
Graduate Science76.8%Expert-Level—
Math
Math Problems94.7%Competition Math73.3%Research Math9.3%
Coding
Code Editing61.7%
Agentic
Terminal Tasks—Task Horizon39min
Specs
MoonshotAIKimi K3
1.0M
Context
16K
Max output
Jul 2026
Released
OpenAIo1
200K
Context
100K
Max output
Dec 2024
Released
Capabilities
MoonshotAIKimi K3
Vision
Audio
Reasoning
OpenAIo1
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
OpenAIo1
Live pricing, shown before you run
Input$15.00/M tokens
Output$60.00/M tokens
Cache read$7.50/M tokens
Web search$0.01/search
Chat with Kimi K3Go to model
Chat with o1Go to model
Frequently Asked Questions: Kimi K3 vs o1▼

Which is better, Kimi K3 or o1?

▼

Both Kimi K3 and o1 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 o1?

▼

Kimi K3 has a lower blended cost. Kimi K3: $3.00 input / $15.00 output. o1: $15.00 input / $60.00 output.

Which has a larger context window, Kimi K3 or o1?

▼

Kimi K3 has a larger context window: Kimi K3 supports 1M tokens vs o1 at 200K tokens.

Do both Kimi K3 and o1 support vision?

▼

Yes, both Kimi K3 and o1 support vision/image input.

What are the key differences between Kimi K3 and o1?

▼

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 Kimi K3 and o1 for free on idapt.app to see which performs better for your specific needs.

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