Anthropic Claude API
✓ VerifiedBuild with Claude Opus 4.5, Sonnet 4.5, and Haiku 4.5 via the Anthropic API
Pricing and features change frequently—confirm on the vendor site.
About
The Anthropic Claude API provides pay-per-use access to Claude’s latest models: Opus 4.5 ($5/$25 MTok), Sonnet 4.5 ($3/$15 MTok for ≤200K prompts; $6/$22.5 MTok for >200K prompts), and Haiku 4.5 ($1/$5 MTok). The API supports 200K-token contexts, tool use/function calling, prompt caching (write/read discounts), and batch processing (50% savings). Available through the Claude Developer Platform with official SDKs, plus partner access on Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry.
Key Features
- ✓200K token context window with higher-tier pricing for >200K Sonnet prompts
- ✓Opus 4.5 for frontier reasoning and coding; Sonnet 4.5 for balanced cost/speed; Haiku 4.5 for fast, low-cost tasks
- ✓Tool use/function calling and structured outputs
- ✓Prompt caching (write/read discounts) and batch processing (50% savings)
- ✓Official SDKs and integration guides for JavaScript and Python
- ✓Partner availability on Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry
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 pay-per-use access to Claude’s latest models: Opus 4.5 ($5/$25 MTok), Sonnet 4.5 ($3/$15 MTok for ≤200K prompts; $6/$22.5 MTok for >200K prompts), and Haiku 4.5 ($1/$5 MTok). The API supports 200K-token contexts, tool use/function calling, prompt caching (write/read discounts), and batch processing (50% savings). Available through the Claude Developer Platform with official SDKs, plus partner access on Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry.
How much does Anthropic Claude API cost?
Anthropic Claude API offers pay-per-use pricing. Plans include: API pay-as-you-go: Usage-based per model.
What programming languages does Anthropic Claude API support?
Anthropic Claude API supports 1+ programming languages including Any (via REST API).
What AI models does Anthropic Claude API use?
Anthropic Claude API is powered by claude-opus-4-5-20251101, claude-sonnet-4-5, claude-haiku-4-5.
What platforms does Anthropic Claude API support?
Anthropic Claude API is available on API, Web.
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 with higher-tier pricing for >200K Sonnet prompts, Opus 4.5 for frontier reasoning and coding; Sonnet 4.5 for balanced cost/speed; Haiku 4.5 for fast, low-cost tasks, Tool use/function calling and structured outputs.
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