Nov 24, 2025 · Claude Opus 4.5 handles long-horizon coding tasks more efficiently than any model we’ve tested. It achieves higher pass rates on held-out tests while using up to 65% fewer tokens, …

Nov 24, 2025 · If you’re a developer, simply use claude-opus-4-5-20251101 via the Claude API. Pricing is now $5/$25 per million tokens—making Opus-level capabilities accessible to even more users, …

Sep 7, 2023 · Today, we’re introducing a paid plan for our Claude.ai chat experience, currently available in the US and UK. Since launching in July, users tell us they’ve chosen Claude.ai as their day-to-day …

Learn to build applications with Claude's API. Find detailed documentation, integration guides, code examples, and best practices for developing with our AI capabilities.

Sep 29, 2025 · Pricing for Sonnet 4.5 starts at $3 per million input tokens and $15 per million output tokens, with up to 90% cost savings with prompt caching and 50% cost savings with batch processing.

Feb 24, 2025 · Claude 3.7 Sonnet is now available on all Claude plans—including Free, Pro, Team, and Enterprise—as well as the Claude Developer Platform, Amazon Bedrock, and Google Cloud’s Vertex …

Dec 19, 2024 · The autonomous nature of agents means higher costs, and the potential for compounding errors. We recommend extensive testing in sandboxed environments, along with the …

Jun 20, 2024 · Claude 3.5 Sonnet is now available for free on Claude.ai and the Claude iOS app, while Claude Pro and Team plan subscribers can access it with significantly higher rate limits.

Oct 15, 2025 · Pricing for Haiku 4.5 on the Claude Developer Platform starts at $1 per million input tokens and $5 per million output tokens, with up to 90% cost savings with prompt caching and 50% …

That’s why we focus on building tools with human benefit at their foundation, like Claude. Through our daily research, policy work, and product design, we aim to show what responsible AI development …