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. Your use is subject to Anthropic's Terms & Privacy Policies.
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import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-sonnet-4.5', prompt: 'Why is the sky blue?'})Copy link to headingMore models by Anthropic
| Model |
|---|
| 1M | 1.9s | 109tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 |   +1 | 07/24/2026 | ||||
| 1M | 1.2s | 119tps | $3/M$2/M | $15/M$10/M | Read:$0.30/M$0.20/M Write: $3.75/M$2.50/M+1 more | $10/K + input costs | +3 | +1 | 06/29/2026 | ||||
| 1M | 1.0s | 100tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 | +1 | 05/28/2026 | ||||
| 1M | 1.0s | 60tps | $3/M | $15/M | Read:$0.30/M Write: $3.75/M+1 more | $10/K + input costs | +3 | +1 | 02/17/2026 | ||||
| 1M | 1.3s | 60tps | $5/MFast $30/M | $25/MFast $150/M | Read:$0.50/M Write: $6.25/M+1 more | $10/K + input costs | +3 |  | 02/05/2026 | ||||
| 200K | 0.7s | 109tps | $1/M | $5/M | Read:$0.10/M Write: $1.25/M+1 more | $10/K + input costs | +3 | +1 | 10/15/2025 |