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Claude 3.7 Sonnet vs Kimi K2
Comprehensive side-by-side LLM comparison
Kimi K2 leads with 2.5% higher average benchmark score. Kimi K2 offers 192 more tokens in context window than Claude 3.7 Sonnet. Kimi K2 is $14.90 cheaper per million tokens. Claude 3.7 Sonnet supports multimodal inputs. Claude 3.7 Sonnet is available on 3 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Sonnet 3.7, released by Anthropic in February 2025, is a large language model from the Claude 3 family featuring hybrid reasoning with configurable extended thinking. It supports a 200K token context window, 64K maximum output tokens (128K in beta), and native image understanding. Sonnet 3.7 targets complex coding, mathematics, and scientific reasoning tasks where extended chain-of-thought processing provides meaningful improvements in output quality.
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Moonshot AI
Kimi K2, released by Moonshot AI on July 11, 2025, is an open-weight Mixture-of-Experts large language model with 1 trillion total parameters and 32 billion active parameters per inference. It features a 256K token context window (expanded from 128K in an September 2025 update) and demonstrated strong performance on agentic coding benchmarks. Kimi K2 targets software engineering agents, tool-use workflows, and open-source deployments under a modified MIT license.
4 months newer
Claude 3.7 Sonnet
Anthropic
2025-02-24
Kimi K2
Moonshot AI
2025-07-11
Pricing Comparison
Cost per million tokens (USD)
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Claude 3.7 Sonnet
Input:$3.00
Output:$15.00
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Kimi K2
Input:$0.60
Output:$2.50($14.90 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude 3.7 Sonnet
Average Score:61.8%
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Kimi K2
Average Score:64.3%(+2.5%)
Performance comparison across key benchmark categories
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Claude 3.7 Sonnet
Agents61.8%
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Kimi K2
Agents64.3%(+2.5%)
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Knowledge Cutoff
Training data recency comparison
Claude 3.7 Sonnet
2024-10
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude 3.7 Sonnet
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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Kimi K2
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Claude 3.7 Sonnet
Avg Score:61.8%
Providers:3
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Kimi K2
Avg Score:64.3%(+2.5%)
Providers:1