Agent may make mistakes. Verify all outputs.
Claude Sonnet 4.5 is the newest model in the Sonnet series, offering improvements and updates over Sonnet 4.
import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-sonnet-4.5', prompt: 'Why is the sky blue?'})Try out Claude Sonnet 4.5 by Anthropic. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
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 |
|---|
| 1M | 0.8s | 47tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | $10.00/K + input costs | — | 09/29/2025 | ||||
| 1M | 1.4s | 58tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | — | — | 09/29/2025 | ||||
| 1M | 0.7s | 49tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | $10.00/K + input costs | — | 09/29/2025 |
| Model |
|---|
| 1M | 1.6s | 68tps | $5.00/M | $25.00/M | Read:$0.5/M Write: $6.25/M | $10/K + input costs | — |    | 04/16/2026 | ||||
| 1M | 0.8s | 56tps | $3.00/M | $15.00/M | Read:$0.3/M Write: $3.75/M | $10/K + input costs | — | | 02/17/2026 | ||||
| 1M | 0.6s | 57tps | $5.00/M | $25.00/M | Read:$0.5/M Write: $6.25/M | $10/K + input costs | — | | 02/05/2026 | ||||
| 200K | 0.4s | 117tps | $1.00/M | $5.00/M | Read:$0.1/M Write: $1.25/M | $10.00/K + input costs | — | | 10/15/2025 | ||||
| 200K | 1.1s | 49tps | $15.00/M | $75.00/M | Read:$1.5/M Write: $18.75/M | $10.00/K + input costs | — | | 08/05/2025 | ||||
| 200K | 1.0s | 46tps | $15.00/M | $75.00/M | Read:$1.5/M Write: $18.75/M | $10.00/K + input costs | — | | 05/22/2025 | ||||
| 1M | 0.6s | 69tps | $3.00/M | $15.00/M | Read: $0.3/M Write: $3.75/M | $10.00/K + input costs | — | | 05/22/2025 | ||||
| 200K | 0.6s | 52tps | $5.00/M | $25.00/M | Read:$0.5/M Write: $6.25/M | $10.00/K + input costs | — | | 11/24/2024 | ||||
| 200K | 0.5s | 55tps | $3.00/M | $15.00/M | Read:$0.3/M Write: $3.75/M | $10.00/K + input costs | — | | 01/25/2024 | ||||
| 200K | 0.5s | 57tps | $0.80/M | $4.00/M | Read:$0.08/M Write: $1/M | — | — | | 11/06/2023 | ||||
| 200K | 0.3s | 138tps | $0.25/M | $1.25/M | Read:$0.03/M Write: $0.3/M | — | — | | 03/01/2023 |