Inferbase
Beta
Claude Opus 4.1
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains in multi-file code refactoring, debugging precision, and detail-oriented reasoning. The model supports extended thinking up to 64K tokens and is optimized for tasks involving research, data analysis, and tool-assisted reasoning.
Input
Output
Context
200K
Max Output
64K
Parameters
—
Technical Specifications
Model TypeChat
Context Window200K
Max Output Tokens64K
Parameters—
Training Cutoff2025-03-01
Licenseproprietary
Capabilities
Input Modalities
textimagepdf
Output Modalities
text
Features
visionfunction_callingtool_usecomputer_useextended_thinkingagenticstreamingjson_modesystem_promptspdf_reading
Benchmarks
Pricing
per 1M tokens • updated regularlyAvailable on 1 Platform
| Platform | Input | Output |
|---|---|---|
OpenRouter | $15.00 | $75.00 |
Resources & Links
proprietary — Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: Mar 16, 2026
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