Kimi K2.5 vs Mistral Small 4 Comparison
Comparing Kimi K2.5 and Mistral Small 4 across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Kimi K2.5 outperforms in 4 benchmarks (AIME 2025, GPQA, MMLU-Pro, MMMU-Pro), while Mistral Small 4 is better at 1 benchmark (AA-LCR).
Kimi K2.5 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Kimi K2.5 ($0.60/1M tokens) is 4.0x more expensive than Mistral Small 4 ($0.15/1M tokens).
For output processing, Kimi K2.5 ($2.50/1M tokens) is 4.2x more expensive than Mistral Small 4 ($0.60/1M tokens).
In conclusion, Kimi K2.5 is more expensive than Mistral Small 4.*
* Using a 3:1 ratio of input to output tokens
Model Size
Parameter count comparison
Kimi K2.5 has 881.0B more parameters than Mistral Small 4, making it 740.3% larger.
Context Window
Maximum input and output token capacity
Kimi K2.5 accepts 262,100 input tokens compared to Mistral Small 4's 256,000 tokens. Kimi K2.5 can generate longer responses up to 262,100 tokens, while Mistral Small 4 is limited to 256,000 tokens.
Input Capabilities
Supported data types and modalities
Both Kimi K2.5 and Mistral Small 4 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Kimi K2.5
Mistral Small 4
License
Usage and distribution terms
Kimi K2.5 is licensed under MIT, while Mistral Small 4 uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Apache 2.0
Open weights
Release Timeline
When each model was launched
Kimi K2.5 was released on 2026-01-27, while Mistral Small 4 was released on 2026-03-16.
Mistral Small 4 is 2 months newer than Kimi K2.5.
Jan 27, 2026
1 months ago
Mar 16, 2026
2 days ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Kimi K2.5 is available from Fireworks. Mistral Small 4 is available from Mistral AI. The availability of providers can affect quality of the model and reliability.
Kimi K2.5
Mistral Small 4
Outputs Comparison
Key Takeaways
Kimi K2.5
View detailsMoonshot AI
Mistral Small 4
View detailsMistral AI
Detailed Comparison
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