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Kimi K3 vs GPT 5.6 Sol

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 5.6 Sol

OpenAI's GPT-5.6 flagship — built for complex reasoning, agentic coding, and long-running professional work.

1.1M ctx$5.00/$30.00 per M
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
Reasoning & Knowledge
Graduate Science93.5%Expert-Level43.5%
Agentic
Terminal Tasks88.3%
OpenAIGPT 5.6 Sol
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Reasoning & Knowledge
Graduate Science94.6%Expert-Level—
Agentic
Terminal Tasks88.8%
Specs
MoonshotAIKimi K3
1.0M
Context
16K
Max output
Jul 2026
Released
OpenAIGPT 5.6 Sol
1.1M
Context
128K
Max output
Jul 2026
Released
Capabilities
MoonshotAIKimi K3
Vision
Audio
Reasoning
OpenAIGPT 5.6 Sol
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 5.6 Sol
Live pricing, shown before you run
Input$5.00/M tokens
Output$30.00/M tokens
Cache read$0.50/M tokens
Web search$0.01/search
Chat with Kimi K3Go to model
Chat with GPT 5.6 SolGo to model
Frequently Asked Questions: Kimi K3 vs GPT 5.6 Sol▼

Which is better, Kimi K3 or GPT 5.6 Sol?

▼

Both Kimi K3 and GPT 5.6 Sol 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 5.6 Sol?

▼

Kimi K3 has a lower blended cost. Kimi K3: $3.00 input / $15.00 output. GPT 5.6 Sol: $5.00 input / $30.00 output.

Which has a larger context window, Kimi K3 or GPT 5.6 Sol?

▼

GPT 5.6 Sol has a larger context window: Kimi K3 supports 1M tokens vs GPT 5.6 Sol at 1.1M tokens.

Do both Kimi K3 and GPT 5.6 Sol support vision?

▼

Yes, both Kimi K3 and GPT 5.6 Sol support vision/image input.

What are the key differences between Kimi K3 and GPT 5.6 Sol?

▼

Kimi K3 and GPT 5.6 Sol have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 5.6 Sol for free on idapt.app to see which performs better for your specific needs.

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