Claude Opus 4.8

Chat Completions

claude-opus-4.8

Anthropic|Created May 27, 2026|1M context

Chat Completions

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token context window. It is suited for highly autonomous agents, long-horizon agentic work, knowledge work, and memory-driven tasks where coherence over extended sessions matters.

Overview Specifications Activity Performance Uptime Examples API Reference

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Pricing-50%

Pay-as-you-go rates for this model. More details in the billing guide.

Input Tokens (1M)

$2.50

Cached Input Tokens (1M)

$0.25

Output Tokens (1M)

$12.50

Claude Opus 4.8

Input Tokens (1M)

Cached Input Tokens (1M)

Output Tokens (1M)

Claude Opus 4.8

Input Tokens (1M)

Cached Input Tokens (1M)

Output Tokens (1M)

Input Modalities

Output Modalities