Anthropic · LLM API Modelactive

Claude Opus 5.5

Claude Opus 5.5 costs $4.00 per 1M input tokens, $0.20 cached input and $20.00 per 1M output tokens. Batch API: $2.00 input, $10.00 output.

Updated September 28, 2026
Input / 1M
$4.00
Output / 1M
$20.00
Cached Input
$0.20
Context Window
1M
Standard Input
$4.00 / 1M
Base prompt input rate
Standard Output
$20.00 / 1M
Completion output rate
Prompt Caching -90%
$0.20 / 1M
Cached prompt context
Batch API -50%
$2.00 / 1M
Asynchronous batch jobs

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Model pricing

All rates listed in USD per 1 Million (1M) tokens unless noted

Standard
Pricing Metric / Parameter
Standard RATE
(per 1M)
Base input tokens$4 / MTok
5m cache writes$5 / MTok
1h cache writes$8 / MTok
Cache hits and refreshes$0.20 / MTok<sup>2</sup>
Output tokens$20 / MTok

Fast mode

All rates listed in USD per 1 Million (1M) tokens unless noted

Standard
Pricing Metric / Parameter
Standard RATE
(per 1M)
Input$8 / MTok
Output$40 / MTok

Batch processing

All rates listed in USD per 1 Million (1M) tokens unless noted

Standard
Pricing Metric / Parameter
Standard RATE
(per 1M)
Batch input$2 / MTok
Batch output$10 / MTok

Source: Anthropic official pricing page, verified 2026-09-28. Prices in USD per 1M tokens.

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