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Kimi K2 Instruct vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 12.4% higher average benchmark score. o3 offers 37.9K more tokens in context window than Kimi K2 Instruct. Kimi K2 Instruct is $7.13 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 Instruct was developed as the instruction-tuned version of Kimi K2, designed to follow user instructions reliably across diverse tasks. Built to serve general-purpose conversational and task-completion applications, it provides Moonshot's accessible interface for language AI.
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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.
2 months newer
o3
OpenAI
2025-04-16
Kimi K2 Instruct
Moonshot AI
2025-07-11
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Pricing Comparison
Cost per million tokens (USD)
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Kimi K2 Instruct
Input:$0.57
Output:$2.30($7.13 cheaper)
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o3
Input:$2.00
Output:$8.00
Performance Metrics
Context window and performance specifications
Average performance across 9 common benchmarks
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Kimi K2 Instruct
Average Score:58.2%
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o3
Average Score:70.6%(+12.4%)
Performance comparison across key benchmark categories
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Kimi K2 Instruct
Coding71.6%(+2.5%)
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o3
Coding69.1%
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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 Instruct
1 providers
Novita
Throughput: 45 tok/s
Latency: 0.95ms
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o3
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Kimi K2 Instruct
Avg Score:58.2%
Providers:1
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o3
Avg Score:70.6%(+12.4%)
Providers:1