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GPT-4.5 vs Kimi K2 Instruct
Comprehensive side-by-side LLM comparison
Kimi K2 Instruct leads with 6.3% higher average benchmark score. Kimi K2 Instruct offers 130.0K more tokens in context window than GPT-4.5. Kimi K2 Instruct is $222.13 cheaper per million tokens. GPT-4.5 supports multimodal inputs. Overall, Kimi K2 Instruct is the stronger choice for coding tasks.
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OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
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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.
4 months newer
GPT-4.5
OpenAI
2025-02-27
Kimi K2 Instruct
Moonshot AI
2025-07-11
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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Kimi K2 Instruct
Input:$0.57
Output:$2.30($222.13 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 9 common benchmarks
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GPT-4.5
Average Score:68.3%
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Kimi K2 Instruct
Average Score:74.6%(+6.3%)
Performance comparison across key benchmark categories
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GPT-4.5
Coding38.0%
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Kimi K2 Instruct
Coding71.6%(+33.6%)
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.5
1 providers
OpenAI
Throughput: 50 tok/s
Latency: 20ms
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Kimi K2 Instruct
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GPT-4.5
Avg Score:68.3%
Providers:1
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Kimi K2 Instruct
Avg Score:74.6%(+6.3%)
Providers:1