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Claude Sonnet 4 vs Kimi K2 0905
Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 4.0% higher average benchmark score. Kimi K2 0905 offers 196.3K more tokens in context window than Claude Sonnet 4. Kimi K2 0905 is $14.90 cheaper per million tokens. Claude Sonnet 4 supports multimodal inputs. Claude Sonnet 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Sonnet 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 69.4% across 8 benchmarks. It excels particularly in MMMLU (86.5%), TAU-bench Retail (80.5%), GPQA (75.4%). It supports a 328K token context window for handling large documents. The model is available through 4 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.
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Moonshot AI
Kimi K2 0905 is a language model developed by Moonshot AI. This model demonstrates exceptional performance with an average score of 84.0% across 6 benchmarks. It excels particularly in HumanEval (94.5%), MMLU (90.2%), MATH (89.1%). It supports a 524K token context window for handling large documents. The model is available through 2 API providers. Released in 2025, it represents Moonshot AI's latest advancement in AI technology.
3 months newer
Claude Sonnet 4
Anthropic
2025-05-22
Kimi K2 0905
Moonshot AI
2025-09-05
Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4
Input:$3.00
Output:$15.00
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Kimi K2 0905
Input:$0.60
Output:$2.50($14.90 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 13 common benchmarks
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Claude Sonnet 4
Average Score:42.7%(+4.0%)
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Kimi K2 0905
Average Score:38.8%
Provider Availability & Performance
Available providers and their performance metrics
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Claude Sonnet 4
4 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
Bedrock
Throughput: 101 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Sonnet 4
Avg Score:42.7%(+4.0%)
Providers:4
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Kimi K2 0905
Avg Score:38.8%
Providers:2