Claude Sonnet 4.5
Claude Sonnet 4.5 is a coding model from Anthropic with strong benchmark scores, including 77.2% on SWE-bench Verified and 61.4% on OSWorld for computer use, sustaining 30+ hour agentic coding sessions, and delivering substantial gains across coding, reasoning, math, and domain-specific expertise.
File InputReasoningTool UseVision (Image)Explicit Caching
index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-sonnet-4.5', prompt: 'Why is the sky blue?'})Providers
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
| Provider |
|---|
 Anthropic | 1M | 2.6s | 50tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | $10.00/K + input costs | — | +3 | 09/29/2025 | ||
 Amazon Bedrock | 1M | 2.0s | 56tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | — | — | +4 | 09/29/2025 | ||
 Google Vertex AI | 1M | 0.7s | 49tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | $10.00/K + input costs | — | +3 | 09/29/2025 |