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Kimi K2 0905 vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 13.5% higher average benchmark score. Kimi K2 0905 offers 224.3K more tokens in context window than o3. Kimi K2 0905 is $6.90 cheaper per million tokens. o3 supports multimodal inputs. Overall, o3 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
o3 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
4 months newer
o3
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($6.90 cheaper)
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o3
Input:$2.00
Output:$8.00
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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o3
Average Score:87.5%(+13.5%)
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Knowledge Cutoff
Training data recency comparison
o3
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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o3
1 providers
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Kimi K2 0905
Avg Score:73.9%
Providers:2
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o3
Avg Score:87.5%(+13.5%)
Providers:1