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Claude Sonnet 4.5 vs DeepSeek-V3.2
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 7.0% higher average benchmark score. Claude Sonnet 4.5 offers 128.0K more tokens in context window than DeepSeek-V3.2. DeepSeek-V3.2 is $16.63 cheaper per million tokens. Claude Sonnet 4.5 supports multimodal inputs. Claude Sonnet 4.5 is available on 3 providers. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4.5, released by Anthropic in September 2025, is a large language model from the Claude 4.5 family that balances response quality and efficiency for coding, agentic tasks, and analytical work. It features a 200K token context window (extendable to 1M tokens in beta), 64K maximum output tokens, native image understanding, and extended thinking support. Sonnet 4.5 targets use cases that require a balance of throughput and reasoning depth, including code generation, data analysis, and multi-step agentic pipelines.
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DeepSeek
DeepSeek-V3.2, released by DeepSeek on December 1, 2025, is a large language model with 685 billion total parameters featuring integrated thinking in tool-use and support for both reasoning and direct generation modes. It features a 128K token context window and introduced large-scale agent training across 1,800+ environments. DeepSeek-V3.2 targets agentic workflows, complex instruction following, and coding tasks under an open MIT license.
2 months newer
Claude Sonnet 4.5
Anthropic
2025-09-29
DeepSeek-V3.2
DeepSeek
2025-12-01
Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4.5
Input:$3.00
Output:$15.00
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DeepSeek-V3.2
Input:$0.27
Output:$1.10($16.63 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude Sonnet 4.5
Average Score:65.9%(+7.0%)
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DeepSeek-V3.2
Average Score:59.0%
Performance comparison across key benchmark categories
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Claude Sonnet 4.5
Agents84.7%(+4.3%)
Coding47.1%(+9.6%)
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DeepSeek-V3.2
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Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4.5
2025-01
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 Sonnet 4.5
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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DeepSeek-V3.2
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Claude Sonnet 4.5
Avg Score:65.9%(+7.0%)
Providers:3
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DeepSeek-V3.2
Avg Score:59.0%
Providers:1