+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Opus 4.1 vs Claude Sonnet 4
Comprehensive side-by-side LLM comparison
Claude Opus 4.1 leads with 5.3% higher average benchmark score. Claude Sonnet 4 offers 32.0K more tokens in context window than Claude Opus 4.1. Claude Sonnet 4 is $72.00 cheaper per million tokens. 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.
+
+
+
+
Anthropic
Claude Sonnet 4, released by Anthropic in May 2025, is a large language model from the Claude 4 family that delivers a balance of performance and efficiency for coding, reasoning, and analytical tasks. 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 targets development workflows, document analysis, and applications that benefit from the performance characteristics of the Claude 4 generation.
2 months newer
Claude Sonnet 4
Anthropic
2025-05-14
Claude Opus 4.1
Anthropic
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude Opus 4.1
Input:$15.00
Output:$75.00
+
+
+
+
Claude Sonnet 4
Input:$3.00
Output:$15.00($72.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
+
+
+
+
Claude Opus 4.1
Average Score:40.9%(+5.3%)
+
+
+
+
Claude Sonnet 4
Average Score:35.6%
Performance comparison across key benchmark categories
+
+
+
+
Claude Opus 4.1
Tool Use40.9%(+5.3%)
+
+
+
+
Claude Sonnet 4
Tool Use35.6%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Claude Opus 4.1
2025-01
Claude Sonnet 4
2025-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Claude Opus 4.1
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
+
+
+
+
Claude Sonnet 4
+
+
+
+
Claude Opus 4.1
Avg Score:40.9%(+5.3%)
Providers:3
+
+
+
+
Claude Sonnet 4
Avg Score:35.6%
Providers:3