The most intelligent AI for business, now with reasoning and vision.
What is Claude Sonnet 4.5?
Claude Sonnet 4.5 is a state-of-the-art AI model developed by Anthropic, an AI safety and research company founded by former OpenAI research executives. The model is built upon Anthropic’s Constitutional AI framework, which is designed to align the system’s outputs with a defined set of principles, aiming to make it helpful, honest, and harmless. Technically, it is a large language model excelling in complex reasoning, nuanced content creation, and detailed analysis of lengthy documents and code. Its key capabilities include sophisticated dialogue, high-level coding proficiency, and advanced data interpretation. The tool is targeted at enterprises, researchers, and developers for use cases such as technical research and development, legal document analysis, and software engineering. By integrating into business workflows, it can automate deep analytical tasks, enhance decision-making with data-driven insights, and streamline the creation of technical documentation. For teams considering implementation, a review of project management AI tools on AI Plaza can provide context for integration strategies (https://ai-plaza.io/ai/project-management). According to a technical analysis by Stanford’s Center for Research on Foundation Models, Claude models demonstrate strong performance in long-context tasks, which is critical for enterprise applications.
Key Findings
- Advanced Reasoning: Handles complex analysis and nuanced logic with exceptional depth and contextual understanding.
- Unmatched Accuracy: Delivers highly reliable outputs with minimal errors across diverse professional and technical domains.
- Enterprise Security: Ensures robust data protection through strict compliance with industry-leading privacy and security standards.
- Seamless Integration: Connects effortlessly with existing business tools and platforms for streamlined operational workflows.
- Rapid Deployment: Enables quick setup and immediate utilization within your existing business environment and systems.
- Cost Efficiency: Provides significant return on investment by optimizing operational expenses and resource allocation effectively.
- Scalable Performance: Maintains consistent high-quality output under increasing workloads and expanding business demands seamlessly.
- Intuitive Interaction: Understands natural language prompts with exceptional clarity for smooth and productive user experiences.
- Continuous Learning: Adapts and improves over time by incorporating new data and evolving user feedback patterns.
- Global Support: Offers comprehensive assistance and resources across multiple time zones and languages for uninterrupted operations.
Who is it for?
Marketer
- Crafting campaign copy
- Analyzing customer sentiment
- Generating content ideas
- Optimizing ad performance
- Creating promotional materials
Project Manager
- Drafting project status reports
- Creating meeting agendas
- Documenting process workflows
- Preparing risk assessments
- Clarifying task requirements
Content Creator
- Writing video script outlines
- Generating social media posts
- Drafting newsletter content
- Developing presentation narratives
- Brainstorming article headlines
Pricing
Free @ $0
- Chat on web, iOS, Android, and on your desktop
- Generate code and visualize data
- Write, edit, and create content
- Analyze text and images
- Ability to search the web
Pro @ $20/month
- More usage*
- Access Claude Code on the web and in your terminal
- Access to unlimited projects to organize chats and documents
- Access to Research
- Connect Google Workspace: email, calendar, and docs
Max @ From $100/month
- Choose 5x or 20x more usage than Pro*
- Higher output limits for all tasks
- Early access to advanced Claude features
- Priority access at high traffic times
Team Standard seat @ $25/month
- Includes Claude Code and Cowork
- Connect Microsoft 365, Slack, and more
- Enterprise search across your organization
- Central billing and administration
- Single sign-on (SSO) and domain capture
Team Premium seat @ $125/month
- 5x more usage than standard seats*
- Includes Claude Code and Cowork
- Connect Microsoft 365, Slack, and more
- Enterprise search across your organization
- Central billing and administration
Opus 4.5 API @ $5/MTok input, $25/MTok output
- Most intelligent model for building agents and coding
- Prompt caching: Write $6.25/MTok, Read $0.50/MTok
Sonnet 4.5 API @ $3/MTok input, $15/MTok output
- Optimal balance of intelligence, cost, and speed
- Prompt caching: Write $3.75/MTok, Read $0.30/MTok
- Prompts ? 200K tokens
Haiku 4.5 API @ $1/MTok input, $5/MTok output
- Fastest, most cost-efficient model
- Prompt caching: Write $1.25/MTok, Read $0.10/MTok