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Kimi K2 0905 vs o4-mini
Comprehensive side-by-side LLM comparison
o4-mini leads with 13.5% higher average benchmark score. Kimi K2 0905 offers 224.3K more tokens in context window than o4-mini. Kimi K2 0905 is $2.40 cheaper per million tokens. o4-mini supports multimodal inputs. Overall, o4-mini is the stronger choice for coding tasks.
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Moonshot AI
Kimi K2 was introduced as the second generation of Moonshot's language model family, designed to provide enhanced capabilities across language understanding and generation. Built with architectural improvements and expanded training, it represents a significant advancement in Moonshot's model offerings.
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OpenAI
o4-mini was created as part of the next generation of OpenAI's reasoning models, designed to continue advancing the balance between analytical capability and operational efficiency. Built to bring cutting-edge reasoning techniques to applications requiring quick turnaround, it represents the evolution of compact reasoning-focused models.
4 months newer
o4-mini
OpenAI
2025-04-16
Kimi K2 0905
Moonshot AI
2025-09-05
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Pricing Comparison
Cost per million tokens (USD)
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Kimi K2 0905
Input:$0.60
Output:$2.50($2.40 cheaper)
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o4-mini
Input:$1.10
Output:$4.40
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Kimi K2 0905
Average Score:73.9%
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o4-mini
Average Score:87.4%(+13.5%)
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Knowledge Cutoff
Training data recency comparison
o4-mini
2024-05-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Kimi K2 0905
2 providers
Novita
ZeroEval
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o4-mini
1 providers
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Kimi K2 0905
Avg Score:73.9%
Providers:2
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o4-mini
Avg Score:87.4%(+13.5%)
Providers:1