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составить предложения с словами может быть и именем, Claude Opus 4.1 \ Anthropic, Claude Opus 4.1 is Here: Everything You Need to Know About , Anthropic's powerful Opus 4.1 model is here - how to access , Claude Opus 4.1 — Everything You Need to Know About Anthropic , Anthropic’s Claude Opus 4.1 now in Amazon Bedrock, Anthropic rolls out Claude Opus 4.1 with improved software , Meet Claude \ Anthropic.
www.theneuron.ai/newsletter/August 6, 2025Claude Opus 4.1 is Here: Everything You Need to Know About Anthropic's Latest UpgradeAnthropic released on August 5th, positioning it as an incremental but meaningful upgrade to their flagship "big brain" model. While they're promising "substantially larger improvements" in coming weeks, this release focuses on what developers actually need: better coding, sharper reasoning, and more reliable agentic performance.The headline number? 74.5% on , where AI models attempt to fix real GitHub issues. That's a new state-of-the-art, beating every other model including OpenAI's latest offerings.Performance Deep DiveReal companies say they are seeing tangible differences while using Opus 4.1:GitHub reports improvements across most capabilities, with multi-file code refactoring showing the biggest gains. This means Opus 4.1 can handle complex changes spanning multiple files without breaking dependencies.Rakuten Group found Opus 4.1 excels at surgical precision—finding exact bugs without introducing new ones or making unnecessary changes. Their engineering teams now prefer it for daily debugging work.Windsurf measured a full standard deviation improvement over Opus 4 on their junior developer benchmark—roughly equivalent to the leap from Sonnet 3.7 to Sonnet 4.Benchmark BreakdownBeyond SWE-bench, Opus 4.1 shows measured improvements across multiple evaluations:TAU-bench (Agentic tasks): Improved performance on both airline and retail agent simulations with extended thinking.GPQA Diamond: Maintains strong graduate-level reasoning.MMLU/MMMLU: Consistent knowledge breadth.Terminal-Bench: Better command-line operations.AIME: Strong mathematical reasoning when using extended thinking (up to 64K tokens).Safety and Alignment UpdatesAnthropic's reveals extensive safety testing, even though Opus 4.1 didn't trigger their "notably more capable" threshold requiring full evaluation:Harmless response rate: 98.76% (up from 97.27% in Opus 4).Over-refusal rate: Remains extremely low at 0.08%.Reward hacking: Shows similar tendencies to Opus 4, with slight regression in some areas.Biological risk: Remains well below ASL-4 thresholds.Cyber capabilities: Solved 18/35 Cybench challenges (vs 16/35 for Opus 4).Interestingly, the model shows a 25% reduction in cooperation with "egregious human misuse" compared to Opus 4—it's better at refusing harmful requests without becoming less helpful overall.Technical ArchitectureWhile Anthropic hasn't disclosed architectural changes, the evaluation patterns suggest refinements in:Detail tracking: Better memory across long contexts.Agentic search: Improved ability to navigate and synthesize information.Multi-step reasoning: More consistent performance on complex, sequential tasks.Tool use: Better integration with external tools and APIs.The model maintains the same 200K context window and 32K max output tokens as Opus 4.Pricing and AvailabilityZero price change from Opus 4:Input: $15 per million tokensOutput: $75 per million tokensPrompt caching: $18.75/MTok (write), $1.50/MTok (read)Available through:Claude.ai (paid plans).Claude Code.Anthropic API (claude-opus-4-1-20250805)Amazon Bedrock.Google Cloud Vertex AI.Migration GuideUpgrading is straightforward—it's designed as a drop-in replacement:Change your model string from claude-opus-4-20250514 to claude-opus-4-1-20250805No API changes required.Anthropic recommends upgrading for all use cases.Read for more info. Competitive ContextThis release comes at an interesting moment. OpenAI just went open-source with , while Anthropic doubles down on premium, closed models. The timing suggests a deliberate strategy: let others race to the bottom on pricing while Anthropic focuses on being the best tool for serious work.Cost At , Opus 4.1 costs 5x more than Sonnet 4 and 19x more than Haiku 3.5. You're paying for precision, not volume.The Bigger PictureOpus 4.1 represents Anthropic's philosophy: incremental excellence over revolutionary claims. While competitors chase AGI narratives, Anthropic ships practical improvements that make existing workflows better.The model's improved refusal of harmful requests while maintaining helpfulness suggests sophisticated fine-tuning. They've managed to make it safer without the over-cautious behavior that plagued earlier safety-focused models.Should You Upgrade?If you're using Opus 4: Yes, immediately. Same price, better performance.If you're using Sonnet 4: Depends on your needs. Opus 4.1 offers superior coding and reasoning but at 5x the cost.If you're cost-sensitive: Stick with Sonnet 4 or Haiku 3.5 unless you specifically need top-tier coding capabilities.What's NextAnthropic's hint about "substantially larger improvements to our models in the coming weeks" suggests Opus 4.1 might be a stopgap before something bigger. But for developers who need better AI coding assistance today, it's the best option available—if you can afford it.The real test will be whether these incremental improvements translate to measurably better real-world applications. Early feedback from GitHub and Rakuten suggests they do. Sometimes the best upgrades aren't the flashy ones—they're the ones that quietly make everything work better.P.S: This article was written entirely with Claude Opus 4.1; how'd it do? :) See you cool cats on X!Get your brand in front of 550,000+ professionals , Claude Opus 4.1 is a leader on SWE-bench, completing days-long engineering tasks in coherent, context-aware solutions across thousands of steps. With improved code taste and 32K output token support, it adapts to specific coding styles while delivering exceptional quality for extensive generation and refactoring projects. Agentic search and , Anthropic released Claude Opus 4.1 on August 5th, positioning it as an incremental but meaningful upgrade to their flagship "big brain" model. While they're promising "substantially larger improvements" in coming weeks, this release focuses on what developers actually need: better coding, sharper reasoning, and more reliable agentic performance..
Anthropic launched Claude Opus 4.1. The model exceeds the predecessor's performance on complex tasks. It is available to paid Claude users, Claude Code, API, Amazon Bedrock, and Google Cloud's , On August 5, 2025, Anthropic released Claude Opus 4.1 — here's everything you need to know about the latest release of Claude., Claude Opus 4.1 is Anthropic's most intelligent model to date and an industry leader for coding and agents. Claude Opus 4.1 is a drop-in replacement for Opus 4 and delivers superior performance and precision for real-world coding and agentic tasks., Three months later, Anthropic is back with Claude Opus 4.1, which it says upgrades “agentic tasks, real-world coding, and reasoning.”, Claude Opus 4.1 and Sonnet 4 Our most powerful models yet, pushing the frontier for coding and AI agents—and enabling Claude to handle hours of work across Claude and Claude Code., .