{"slug": "claude-opus-5-5-keeping-safety-ahead-of-capabilities", "title": "Claude Opus 5.5: Keeping safety ahead of capabilities", "summary": "Anthropic introduced Claude Opus 5.5, the first model in its Claude 5.5 family, which performs at the level of Claude Fable 5.1 on most work and costs around 40% less to run than Opus 5, with input and output tokens priced at $4 and $20 per million, 20% below Opus 5. Anthropic said the release is its first since calling for \"pacing the frontier,\" keeping safety practices ahead of model capabilities, and that Claude Sonnet 5.5 and Haiku 5.5 will launch over the coming weeks. GitHub chief product officer Mario Rodriguez said that in testing across GitHub Copilot CLI and VS Code, Claude Opus 5.5 \"solved more terminal tasks than Opus 5 in less than half the steps,\" and the model is now available on Amazon Web Services, Google Cloud, and Microsoft Azure.", "body_md": "# Claude Opus 5.5: Keeping safety ahead of capabilities\n\nAnthropic today introduced Claude Opus 5.5, the first release in a new family of Claude 5.5 models. Claude Opus 5.5 performs at the level of Claude Fable 5.1 on most work, and costs around 40% less to run than Opus 5. Over the coming weeks, we’ll also be launching Claude Sonnet 5.5 and Haiku 5.5.\n\nThis is the first model release since the company called for [pacing the frontier](https://darioamodei.com/post/we-must-pace-the-frontier), which means keeping safety practices ahead of model capabilities.\n\n##### What this means for our model development and release\n\nThe current generation of models relies on extensive alignment testing, pre-release evaluation by outside organizations such as METR and Frontier Design, and safeguards matched to each model’s capabilities in high-risk areas like cybersecurity and biology.\n\nFor Opus 5.5 specifically,\n\nThe model context protocol for AI connectivity\n\nAI Gateway & Proxy\n[Compare pricing & 5 other AI Gateway & Proxy →](https://tools.sdtimes.com/tool/anthropic-mcp?ref=sdt-article&post=61245)\n\nAs for pricing, Opus 5.5 requires less compute to serve than Opus 5, the company announced, and will cost 40% less than Opus 5 on typical workloads. Input and output tokens are $4 and $20 per million, 20% less than Opus 5., Anthropic said.\n\nMario Rodriguez, chief product officer at GitHub, said “Developers want agents that can take on real software work and finish it. In our testing across GitHub Copilot CLI and VS Code, Claude Opus 5.5 used among the fewest tokens and steps we measured. In VS Code, it solved more terminal tasks than Opus 5 in less than half the steps. More than making individual tasks more efficient, it’s making developers’ bigger projects more achievable.”\n\nClaude Opus 5.5 is now available on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure. On the Claude Platform, developers can [get started](https://platform.claude.com/docs/en/models/overview) with Claude Opus 5.5.\n\nTo learn more, read Anthropic’s [blog announcement.](https://www.anthropic.com/claude-opus-5-5)", "url": "https://wpnews.pro/news/claude-opus-5-5-keeping-safety-ahead-of-capabilities", "canonical_source": "https://sdtimes.com/ai-models/claude-opus-5-5-keeping-safety-ahead-of-capabilities/", "published_at": "2026-09-22 18:59:03+00:00", "updated_at": "2026-09-22 19:25:59.204596+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-safety", "ai-products", "ai-agents"], "entities": ["Anthropic", "Claude Opus 5.5", "Claude Fable 5.1", "Claude Sonnet 5.5", "Claude Haiku 5.5", "Mario Rodriguez", "GitHub", "Amazon Web Services"], "alternates": {"html": "https://wpnews.pro/news/claude-opus-5-5-keeping-safety-ahead-of-capabilities", "markdown": "https://wpnews.pro/news/claude-opus-5-5-keeping-safety-ahead-of-capabilities.md", "text": "https://wpnews.pro/news/claude-opus-5-5-keeping-safety-ahead-of-capabilities.txt", "jsonld": "https://wpnews.pro/news/claude-opus-5-5-keeping-safety-ahead-of-capabilities.jsonld"}}