Claude Sonnet 4 (latest) API
About
Build advanced reasoning agents with Claude Sonnet 4 (latest), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $3.00/1M input and $15.00/1M output tokens, native tool calling support. Access Claude Sonnet 4 (latest) via the GitHub Copilot API with up to 16K output tokens.
Capabilities
Input Modalities
textimagepdf
Output Modalities
text
Limits
Context Window
216K
Tokens
Input Limit
128K
Tokens
Max Output
16K
Tokens
Pricing
Standard (per 1M tokens)
Input
$3.00
Output
$15.00
Caching (per 1M tokens)
Read
$0.30
Write
$3.75
Frequently Asked Questions
Claude Sonnet 4 (latest) by GitHub Copilot costs $3.00 per 1M input tokens and $15.00 per 1M output tokens. Cached reads cost $0.30 per 1M tokens. Cache writes cost $3.75 per 1M tokens.
Model Details
ID
claude-sonnet-4
Provider
GitHub CopilotFamily
claude-sonnet
Release Date
May 22, 2025
Knowledge Cutoff
Mar 31, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
GITHUB_TOKEN
API Base URL
https://api.githubcopilot.com