Anthropic Claude API
✓ VerifiedBuild with Claude Opus 4.6, Sonnet 4.6, and Haiku via the Anthropic API with MCP and adaptive thinking
About
The Anthropic Claude API provides pay-per-use access to the full Claude model lineup: Opus 4.6 (released Feb 5, 2026) for highest-depth reasoning at $5/$25 per MTok, Sonnet 4.6 (Feb 17, 2026) as the balanced default at $3/$15, and Haiku 4.5 for speed-optimized budget workloads at $1/$5. The API supports the Model Context Protocol (MCP) with 75+ enterprise connectors, adaptive thinking for extended reasoning, context compaction for efficient long conversations, tool use, prompt caching (write/read discounts), batch processing (50% savings), and deployment across Anthropic, AWS Bedrock, Google Vertex AI, and Azure AI Foundry.
Key Features
- ✓Claude model lineup: Opus 4.6 ($5/$25), Sonnet 4.6 ($3/$15), Haiku 4.5 ($1/$5)
- ✓Model Context Protocol (MCP): open standard with 75+ enterprise connectors
- ✓Adaptive thinking: extended reasoning mode for complex problem-solving
- ✓Context compaction: efficiently handles long conversations without losing context
- ✓Tool use/function calling with structured outputs
- ✓Prompt caching (write/read discounts) and batch processing (50% savings)
- ✓Computer use: GUI automation at 61.4% OSWorld benchmark
- ✓Artifacts: interactive code, documents, and visualizations (500M+ created)
- ✓Constitutional AI safety framework with ~3% hallucination rate
- ✓Official SDKs for JavaScript and Python
- ✓Deployment: Anthropic API, AWS Bedrock, Google Vertex AI, Azure AI Foundry
Pros & Cons
Pros
- Opus 4.6 at 80.9% SWE-bench; Sonnet 4.6 balanced default
- MCP with 75+ enterprise connectors
- Deploy on Anthropic, AWS Bedrock, Google Vertex, Azure
Cons
- Premium pricing for Opus tier
- No BYOK on standard API
Use Cases
- →Complex code analysis, generation, and autonomous coding (80.9% SWE-bench)
- →Building agentic workflows with MCP and 75+ enterprise connectors
- →Long document processing with context compaction
- →Computer use for GUI automation and QA testing
- →Enterprise AI applications with Constitutional AI safety
- →Multi-step reasoning tasks with adaptive thinking
Technical Details
Languages
AI Models
Integrations
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Frequently Asked Questions
What is Anthropic Claude API?
The Anthropic Claude API provides pay-per-use access to the full Claude model lineup: Opus 4.6 (released Feb 5, 2026) for highest-depth reasoning at $5/$25 per MTok, Sonnet 4.6 (Feb 17, 2026) as the balanced default at $3/$15, and Haiku 4.5 for speed-optimized budget workloads at $1/$5. The API supports the Model Context Protocol (MCP) with 75+ enterprise connectors, adaptive thinking for extended reasoning, context compaction for efficient long conversations, tool use, prompt caching (write/read discounts), batch processing (50% savings), and deployment across Anthropic, AWS Bedrock, Google Vertex AI, and Azure AI Foundry.
How much does Anthropic Claude API cost?
Anthropic Claude API offers pay-per-use pricing. Plans include: Opus 4.6: $5 / 1M input, $25 / 1M output, Sonnet 4.6: $3 / 1M input, $15 / 1M output, Haiku 4.5: $1 / 1M input, $5 / 1M output.
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-4-6, claude-sonnet-4-6, 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: Claude model lineup: Opus 4.6 ($5/$25), Sonnet 4.6 ($3/$15), Haiku 4.5 ($1/$5), Model Context Protocol (MCP): open standard with 75+ enterprise connectors, Adaptive thinking: extended reasoning mode for complex problem-solving.
Pricing and features change frequently—confirm on the vendor site.
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Pricing
Opus 4.6
$5 / 1M input, $25 / 1M output
- Highest-depth reasoning and coding model
- 80.9% SWE-bench Verified score
- 200K context window (1M beta)
- 128K max output tokens
Sonnet 4.6
$3 / 1M input, $15 / 1M output
- Balanced cost/speed default model
- ~75% SWE-bench performance
- 200K context window
- 128K max output tokens
Haiku 4.5
$1 / 1M input, $5 / 1M output
- Speed-optimized budget model
- 200K context window
- 8,192 max output tokens
- Fast latency for high-volume tasks
Company
- Name
- Anthropic
- Founded
- 2021
- Location
- San Francisco, CA
Links
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