Anthropic Claude API
✓ VerifiedAccess Claude Opus 4.5, Sonnet 4.5, and more with 200K+ context window
About
The Anthropic Claude API provides access to Claude's family of models, including Claude Opus 4.5 (launched November 24, 2025) and ultra-fast Sonnet 4.5. November 2025 updates introduced major API features: Programmatic Tool Calling and Tool Search to reduce token consumption, an 'effort' parameter to balance cost and performance, and guaranteed structured outputs in JSON format. With a massive 200K+ token context window and industry-leading reasoning capabilities, Claude excels at complex tasks like code analysis, document processing, and agentic workflows. Opus 4.5 leads SWE-bench Verified. Known for strong coding performance and safety, Claude is trusted by enterprises and developers worldwide.
Key Features
- ✓200K+ token context window
- ✓Claude Opus 4.5 for complex reasoning
- ✓Sonnet 4.5 for speed and efficiency
- ✓Programmatic Tool Calling
- ✓Tool Search (reduces token consumption)
- ✓Effort parameter (cost vs performance balance)
- ✓Guaranteed structured outputs (JSON format)
- ✓Vision and document understanding
- ✓Tool use and function calling
- ✓Strong coding capabilities
- ✓Extended thinking mode
- ✓Safety and alignment focused
Use Cases
- →Complex code analysis and generation
- →Long document processing
- →Agentic workflows and automation
- →Research and analysis
- →Enterprise AI applications
- →Multi-step reasoning tasks
Technical Details
Languages
AI Models
Integrations
Frequently Asked Questions
What is Anthropic Claude API?
The Anthropic Claude API provides access to Claude's family of models, including Claude Opus 4.5 (launched November 24, 2025) and ultra-fast Sonnet 4.5. November 2025 updates introduced major API features: Programmatic Tool Calling and Tool Search to reduce token consumption, an 'effort' parameter to balance cost and performance, and guaranteed structured outputs in JSON format. With a massive 200K+ token context window and industry-leading reasoning capabilities, Claude excels at complex tasks like code analysis, document processing, and agentic workflows. Opus 4.5 leads SWE-bench Verified. Known for strong coding performance and safety, Claude is trusted by enterprises and developers worldwide.
How much does Anthropic Claude API cost?
Anthropic Claude API offers pay-per-use pricing. Plans include: Pay As You Go: Usage-based.
What programming languages does Anthropic Claude API support?
Anthropic Claude API supports 3+ programming languages including Python, TypeScript, All languages (REST API).
What AI models does Anthropic Claude API use?
Anthropic Claude API is powered by Claude Opus 4.5, Claude 4.0 Opus, Sonnet 4.5, Claude 3.7 Sonnet, Claude 3 Haiku.
What platforms does Anthropic Claude API support?
Anthropic Claude API is available on Web, All platforms via API.
What can Anthropic Claude API do?
Anthropic Claude API provides code completion, code generation, debugging, AI chat, agentic/autonomous mode. Key features include: 200K+ token context window, Claude Opus 4.5 for complex reasoning, Sonnet 4.5 for speed and efficiency.
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