Claude Opus 5 (Fast)
Claude Opus 5 is the latest model in Anthropic's Opus family and a step-change improvement over Opus 4.8. It delivers major gains over Opus 4.8 in agentic coding, professional knowledge work, and long-horizon reasoning, and it is stronger per token across effort levels. Your use subject to Anthropic's Terms & Privacy Policies.
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index.ts
import { streamText } from 'ai'
const result = streamText({ model: 'anthropic/claude-opus-5-fast', prompt: 'Why is the sky blue?'})More models by Anthropic
| Model |
|---|
| 1M | 1.2s | 111tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.5/M Write: $6.25/M | $10/K + input costs | +3 |    | 07/24/2026 | |||
| 1M | 3.8s | 95tps | $10/M | $50/M | Read:$1/M Write: $12.5/M | $10/K + input costs | +2 | | 07/01/2026 | |||
| 1M | 1.2s | 110tps | $3/M$2/M | $15/M$10/M | Read:$0.3/M$0.2/M Write: $3.75/M$2.5/M | $10/K + input costs | +3 | | 06/29/2026 | |||
| 1M | 2.1s | 107tps | $5/MFast $10/M | $25/MFast $50/M | Read:$0.5/M Write: $6.25/M | $10/K + input costs | +3 | | 05/28/2026 | |||
| 1M | 1.0s | 75tps | $3/M | $15/M | Read:$0.3/M Write: $3.75/M | $10/K + input costs | +3 | | 02/17/2026 | |||
| 200K | 0.7s | 138tps | $1/M | $5/M | Read:$0.1/M Write: $1.25/M | $10/K + input costs | +3 | | 10/15/2025 |