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Claude Opus 4.6 vs DeepSeek-V3.1
Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 82.7% higher average benchmark score. Claude Opus 4.6 offers 192.0K more tokens in context window than DeepSeek-V3.1. DeepSeek-V3.1 is $28.63 cheaper per million tokens. Claude Opus 4.6 supports multimodal inputs. Claude Opus 4.6 is available on 3 providers. Overall, Claude Opus 4.6 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.6, released by Anthropic in February 2026, is a large language model from the Claude 4 family designed for complex agent orchestration, extended reasoning, and long-form code generation. It features a 200K token context window (extendable to 1M tokens in beta), 128K maximum output tokens, native image understanding, and extended thinking with both standard and adaptive effort modes. Opus 4.6 targets multi-step agentic workflows, parallel tool use, and applications requiring sustained reasoning over large contexts.
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DeepSeek
DeepSeek-V3.1, released by DeepSeek in August 2025, is a hybrid large language model with 671 billion total parameters (37 billion active) that unifies the capabilities of DeepSeek-V3 and DeepSeek-R1 in a single model. It features a 128K token context window and supports both direct generation and extended reasoning modes selectable via the chat template. DeepSeek-V3.1 targets general-purpose tasks, coding, and complex reasoning under an open MIT license.
5 months newer
DeepSeek-V3.1
DeepSeek
2025-08-21
Claude Opus 4.6
Anthropic
2026-02
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.6
Input:$5.00
Output:$25.00
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DeepSeek-V3.1
Input:$0.27
Output:$1.10($28.63 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.6
Average Score:84.0%(+82.7%)
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DeepSeek-V3.1
Average Score:1.3%
Performance comparison across key benchmark categories
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Claude Opus 4.6
Agents84.0%(+82.7%)
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DeepSeek-V3.1
Agents1.3%
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.6
2025-05
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 Opus 4.6
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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DeepSeek-V3.1
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Claude Opus 4.6
Avg Score:84.0%(+82.7%)
Providers:3
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DeepSeek-V3.1
Avg Score:1.3%
Providers:1