TLDR: Anthropic has released Claude Opus 4.1, an incremental upgrade to its Claude Opus 4 model, featuring significant advancements in agentic tasks, real-world coding accuracy, and complex reasoning. The model is now accessible to paid Claude users and through various platforms including Claude Code, Anthropic’s API, Amazon Bedrock, and Google Cloud’s Vertex AI, maintaining the same pricing structure as its predecessor.
Anthropic, a leading AI firm, announced today the release of Claude Opus 4.1, an advanced iteration of its flagship Claude Opus 4 model. This update brings substantial improvements across key areas, particularly in agentic tasks, real-world coding, and sophisticated reasoning, solidifying its position as Anthropic’s most capable model to date.
One of the most notable enhancements is in software engineering accuracy. Claude Opus 4.1 achieves an impressive 74.5% score on SWE-bench Verified, a significant leap from Claude Opus 4’s 72.5% and Claude Sonnet 3.7’s 62.3%. This benchmark, which evaluates a model’s ability to fully fix real GitHub issues, underscores Opus 4.1’s improved proficiency in multi-file code refactoring and autonomous research capabilities. Anthropic highlights that the updated model excels in ‘in-depth research and data analysis skills, especially around detail tracking and agentic search,’ enabling it to handle complex, multi-step problems with greater rigor and attention to detail.
Beyond coding, Claude Opus 4.1 demonstrates enhanced performance in long-horizon task execution and supports extended thinking through sophisticated tool use and logical summaries. The model also boasts exceptional writing abilities, surpassing previous Claude models and setting new standards for natural, human-like prose.
Availability for Claude Opus 4.1 is broad, catering to both individual users and enterprises. It is immediately accessible to paid Claude users, including those on Pro, Max, Team, and Enterprise plans. Developers can integrate the model via Anthropic’s API, and it is also available through Claude Code, a command-line interface offering full codebase awareness and autonomous execution capabilities. Cloud platform integrations include Amazon Bedrock, available in US East (Ohio, N. Virginia) and US West (Oregon) regions, and Google Cloud’s Vertex AI, with broader geographic coverage including us-east5, europe-west4, and us-central1, alongside global endpoints in public preview. Furthermore, Claude Opus 4.1 is now in public preview within GitHub Copilot for Copilot Enterprise and Pro+ plans, accessible through GitHub Copilot Chat on github.com, Visual Studio Code, and GitHub Mobile.
Despite the significant performance upgrades, Anthropic has maintained the pricing structure of Claude Opus 4. The model is priced at $15 per million input tokens and $75 per million output tokens. Anthropic also notes potential cost savings of up to 90% with prompt caching and 50% with batch processing for asynchronous workloads.
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Major technology companies such as Rakuten Group, GitHub, and Block have already integrated Claude Opus 4.1, reporting positive outcomes in real-world applications, from extended autonomous coding sessions to intricate enterprise workflows. Looking ahead, Anthropic has indicated plans ‘to release substantially larger improvements to our models in the coming weeks,’ signaling a continuous commitment to advancing its AI capabilities.
