Claude Opus 4.1 API | AIMLAPI (original) (raw)
Claude Opus 4.1
Claude Opus 4.1 from Anthropic is a powerful AI model optimized for coding, reasoning, and autonomous workflows.
Claude Opus 4.1 by Anthropic is an advanced upgrade to the flagship Claude Opus 4 model, designed for coding, reasoning, and agentic tasks with outstanding precision and a 200,000-token context window. It supports up to 32,000 tokens in responses, achieving a leading 74.5% on the SWE-bench Verified benchmark, demonstrating superior performance in complex multi-file code refactoring and debugging large codebases.
Technical Specifications and Features:
- 200,000-token context window allowing deep, large-scale data analysis.
- Up to 32,000 tokens output per response, enabling complex multi-step tasks.
- Improved SWE-bench coding performance: 74.5% Verified (up from 72.5% in Opus 4).
- Hybrid reasoning mode for instant answers or extended detailed step-by-step analysis.
- Enhanced advanced coding capabilities for autonomous planning and execution of large-scale code projects.
- Superior reasoning and data synthesis across structured and unstructured datasets, including patent and research documents.
- Rich, natural language content generation with improved prose and tone.
Performance Metrics
Claude Opus 4.1 demonstrates improvements across a broad range of capabilities compared to Opus 4, with especially strong gains in handling complex multi-file code refactoring.
API Pricing
- Input: $19.5 / MTok
- Output: $97.5 / MTok
Key Use Cases:
- Large-scale code refactoring and precise bug fixing in expansive software projects.
- Autonomous multi-step reasoning tasks and long-horizon AI agent workflows.
- Comprehensive data analysis and insight extraction from complex data sources.
- High-quality content creation with sophisticated, human-like text output.
Comparison with Other Models
**vs. Claude Opus 4:**Claude Opus 4.1 offers improved precision and excels in multi-file refactoring with hybrid reasoning capabilities, marking a clear advancement over the already strong coding and reasoning performance of Opus 4.
**vs. Gemini 2.5 Flash:**Claude Opus 4.1 significantly outperforms Gemini 2.5 Flash by delivering superior coding accuracy, making it much better suited for complex software engineering tasks.
**vs. OpenAI o3-mini:**Compared to OpenAI o3-mini, Claude Opus 4.1 provides enhanced support for autonomous coding workflows and achieves higher benchmark scores, reflecting greater effectiveness in multi-step programming and reasoning.
Limitations
- No multimodal or vision capabilities.
- Fine-tuning is not supported.
- Focused exclusively on text-based tasks.
Claude Opus 4.1 by Anthropic is an advanced upgrade to the flagship Claude Opus 4 model, designed for coding, reasoning, and agentic tasks with outstanding precision and a 200,000-token context window. It supports up to 32,000 tokens in responses, achieving a leading 74.5% on the SWE-bench Verified benchmark, demonstrating superior performance in complex multi-file code refactoring and debugging large codebases.
Technical Specifications and Features:
- 200,000-token context window allowing deep, large-scale data analysis.
- Up to 32,000 tokens output per response, enabling complex multi-step tasks.
- Improved SWE-bench coding performance: 74.5% Verified (up from 72.5% in Opus 4).
- Hybrid reasoning mode for instant answers or extended detailed step-by-step analysis.
- Enhanced advanced coding capabilities for autonomous planning and execution of large-scale code projects.
- Superior reasoning and data synthesis across structured and unstructured datasets, including patent and research documents.
- Rich, natural language content generation with improved prose and tone.
Performance Metrics
Claude Opus 4.1 demonstrates improvements across a broad range of capabilities compared to Opus 4, with especially strong gains in handling complex multi-file code refactoring.
API Pricing
- Input: $19.5 / MTok
- Output: $97.5 / MTok
Key Use Cases:
- Large-scale code refactoring and precise bug fixing in expansive software projects.
- Autonomous multi-step reasoning tasks and long-horizon AI agent workflows.
- Comprehensive data analysis and insight extraction from complex data sources.
- High-quality content creation with sophisticated, human-like text output.
Comparison with Other Models
**vs. Claude Opus 4:**Claude Opus 4.1 offers improved precision and excels in multi-file refactoring with hybrid reasoning capabilities, marking a clear advancement over the already strong coding and reasoning performance of Opus 4.
**vs. Gemini 2.5 Flash:**Claude Opus 4.1 significantly outperforms Gemini 2.5 Flash by delivering superior coding accuracy, making it much better suited for complex software engineering tasks.
**vs. OpenAI o3-mini:**Compared to OpenAI o3-mini, Claude Opus 4.1 provides enhanced support for autonomous coding workflows and achieves higher benchmark scores, reflecting greater effectiveness in multi-step programming and reasoning.
Limitations
- No multimodal or vision capabilities.
- Fine-tuning is not supported.
- Focused exclusively on text-based tasks.