Claude Opus 4.8 (Fast) – Model Docs — Person.run

Claude Opus 4.8 (Fast)

Opus 4.8 is a focused upgrade to Opus 4.7 and is Anthropic's best generally available model for coding, agentic tasks, and enterprise workflows. It builds on the strengths of previous Opus models with stronger performance on complex, multi-step coding tasks. Anthropic recommends using it on long-horizon coding and agentic tasks. It is also stronger on professional work, including document drafting, data analysis, and presentations.

Model overview

Model ID: anthropic/claude-opus-4.8-fast
Provider: anthropic
Type: language
Context window: 1,000,000 tokens
Max output tokens: 128,000

Tags: tool-use, reasoning, vision, file-input, explicit-caching, web-search, fast

Model pricing

Metric	Value
`Input tokens (/1M)`	`$10.00`
`Output tokens (/1M)`	`$50.00`
`Image generation`	`n/a`
`Cached input read (/1M)`	`$1.00`
`Cached input write (/1M)`	`$12.50`
`Pricing source`	`gateway`

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