Kimi K2.5 vs Grok-4.1 Thinking Comparison
Comparing Kimi K2.5 and Grok-4.1 Thinking across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Kimi K2.5 and Grok-4.1 Thinking don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
Cost data unavailable.
Context Window
Maximum input and output token capacity
Only Grok-4.1 Thinking specifies input context (256,000 tokens). Only Grok-4.1 Thinking specifies output context (8,000 tokens).
Input Capabilities
Supported data types and modalities
Both Kimi K2.5 and Grok-4.1 Thinking support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Kimi K2.5
Grok-4.1 Thinking
License
Usage and distribution terms
Kimi K2.5 is licensed under MIT, while Grok-4.1 Thinking uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Kimi K2.5 was released on 2026-01-27, while Grok-4.1 Thinking was released on 2025-11-17.
Kimi K2.5 is 2 months newer than Grok-4.1 Thinking.
Jan 27, 2026
1 months ago
2mo newerNov 17, 2025
4 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Key Takeaways
Kimi K2.5
View detailsMoonshot AI
Detailed Comparison
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