Key Takeaways
Kimi K2 Thinking wins:
- Cheaper input tokens
- Has reasoning mode
Step3 wins:
- Cheaper output tokens
- Larger context window
- Supports vision
Price Advantage
Kimi K2 Thinking
Benchmark Advantage
Kimi K2 Thinking
Context Window
Step3
Speed
N/A
Pricing Comparison
Context & Performance
Capabilities
Feature Comparison
| Feature | Kimi K2 Thinking | Step3 |
|---|---|---|
Vision (Image Input) | ||
Tool/Function Calls | ||
Reasoning Mode | ||
Audio Input | ||
Audio Output | ||
PDF Input | ||
Prompt Caching | ||
Web Search |
License & Release
| Property | Kimi K2 Thinking | Step3 |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Moonshotai | Stepfun-ai |
| Released | Nov 2025 | Unknown |
Kimi K2 Thinking Modalities
Input
text
Output
text
Step3 Modalities
Input
Output