Comprehensive side-by-side LLM comparison
Claude Opus 4.1 leads with 8.2% higher average benchmark score. Claude Opus 4.1 offers 96.0K more tokens in context window than DeepSeek-R1. DeepSeek-R1 is $87.26 cheaper per million tokens. Claude Opus 4.1 supports multimodal inputs. Claude Opus 4.1 is available on 3 providers. Overall, Claude Opus 4.1 is the stronger choice for coding tasks.
Anthropic
Claude Opus 4.1, released by Anthropic in August 2025, is a large language model from the Claude 4 family optimized for demanding reasoning, multi-step coding, and extended analysis tasks. It features a 200K token context window, 32K maximum output tokens, native image understanding, and extended thinking capabilities. Opus 4.1 targets complex problem-solving, multi-turn reasoning workflows, and applications requiring deep analysis with integrated tool use.
DeepSeek
DeepSeek-R1, released by DeepSeek on January 20, 2025, is a large reasoning model with 671 billion total parameters (37 billion active in its MoE architecture) designed for extended chain-of-thought reasoning. It features a 128K token context window and demonstrated strong performance on mathematics, coding, and scientific reasoning benchmarks at its release. DeepSeek-R1 targets complex analytical tasks, competitive programming, and applications requiring deep deliberative reasoning under an open MIT license.
6 months newer

DeepSeek-R1
DeepSeek
2025-01-20

Claude Opus 4.1
Anthropic
2025-08-05
Cost per million tokens (USD)
Claude Opus 4.1
DeepSeek-R1
Context window and performance specifications
Average performance across 2 common benchmarks
Claude Opus 4.1
DeepSeek-R1
Performance comparison across key benchmark categories
Claude Opus 4.1
DeepSeek-R1
Claude Opus 4.1
2025-01
Available providers and their performance metrics
Claude Opus 4.1
Anthropic
AWS Bedrock
Google Cloud Vertex AI
DeepSeek-R1
Claude Opus 4.1
DeepSeek-R1
Claude Opus 4.1
DeepSeek-R1
DeepSeek