Anthropic Claude Sonnet Latest API
About
Build advanced reasoning agents with Anthropic Claude Sonnet Latest, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $2.00/1M input and $10.00/1M output tokens, native tool calling support. Access Anthropic Claude Sonnet Latest via the OpenRouter API with up to 128K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Fixed
Attachment
Supported
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$2.00
Output
$10.00
Caching (per 1M tokens)
Read
$0.20
Write
$2.50
Frequently Asked Questions
Anthropic Claude Sonnet Latest by OpenRouter costs $2.00 per 1M input tokens and $10.00 per 1M output tokens. Cached reads cost $0.20 per 1M tokens. Cache writes cost $2.50 per 1M tokens.
Model Details
ID
~anthropic/claude-sonnet-latest
Provider
OpenRouterFamily
claude-sonnet
Release Date
Apr 27, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1