claude-sonnet-4-5-20250929 API
About
Build advanced reasoning agents with claude-sonnet-4-5-20250929, 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-4-5-20250929 via the 302.AI API with up to 64K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Limits
Context Window
200K
Tokens
Input Limit
200K
Tokens
Max Output
64K
Tokens
Pricing
Standard (per 1M tokens)
Input
$3.00
Output
$15.00
Frequently Asked Questions
claude-sonnet-4-5-20250929 by 302.AI costs $3.00 per 1M input tokens and $15.00 per 1M output tokens.
Model Details
ID
claude-sonnet-4-5-20250929
Provider
302.AIFamily
claude-sonnet
Release Date
Sep 30, 2025
Knowledge Cutoff
Jul 31, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
302AI_API_KEY
API Base URL
https://api.302.ai/v1