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Kimi K2 (0905) vs GPT 5.6 Sol

At a glance

September 2025 checkpoint of Kimi K2 with improved capabilities.

262K ctx$0.60/$2.50 per M

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
Agent Demos
All agent demos

No shared agent demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
No benchmarks available

This model hasn't been benchmarked yet.

Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Reasoning & Knowledge
Graduate Science94.6%
Agentic
Terminal Tasks88.8%
Specs
262K
Context
100K
Max output
Sep 2025
Released
1.1M
Context
128K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input88%$0.60/M tokens
Output92%$2.50/M tokens
Live pricing, shown before you run
Input$5.00/M tokens
Output$30.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Chat with Kimi K2 (0905)Go to model
Chat with GPT 5.6 SolGo to model
Frequently Asked Questions: Kimi K2 (0905) vs GPT 5.6 Sol▼

Which is better, Kimi K2 (0905) or GPT 5.6 Sol?

▼

Both Kimi K2 (0905) 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 K2 (0905) or GPT 5.6 Sol?

▼

Kimi K2 (0905) has a lower blended cost. Kimi K2 (0905): $0.60 input / $2.50 output. GPT 5.6 Sol: $5.00 input / $30.00 output.

Which has a larger context window, Kimi K2 (0905) or GPT 5.6 Sol?

▼

GPT 5.6 Sol has a larger context window: Kimi K2 (0905) supports 262K tokens vs GPT 5.6 Sol at 1.1M tokens.

Do both Kimi K2 (0905) and GPT 5.6 Sol support vision?

▼

GPT 5.6 Sol supports vision/image input, but Kimi K2 (0905) does not.

What are the key differences between Kimi K2 (0905) and GPT 5.6 Sol?

▼

Key differences: Kimi K2 (0905) is significantly cheaper; only GPT 5.6 Sol supports vision input; only GPT 5.6 Sol 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 GPT 5.6 Sol for free on idapt.app to see which performs better for your specific needs.

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