Claude Opus 4.8

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Data updated on September 30, 2026· 217 models

AnthropicOpus 4.8

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family.

Reasoning estimated
Speed estimated
Input
Output
Context
1 M tokens
Max output
128 K
Input, $ per 1M tokens
$5.00
Output, $ per 1M tokens
$25.00
Cache read, $ per 1M
$0.500
Batch (input / output)
$2.50 / $12.50
Tool calling
Yes
Released
05/28/2026
Knowledge cutoff
2026-01
API id
anthropic/claude-opus-4.8

Summary from the data

Claude Opus 4.8 is a Anthropic model available by API since 05/28/2026. It costs $5.00 per million input tokens and $25.00 per million output tokens, accepts 1 M tokens of context and generates up to 128 K tokens per response. Input: text, image, PDF / file; output: text. It has a reasoning mode. It supports tool calling. With 10,000 requests a month of 1,500 input and 400 output tokens it would cost about $175.00 a month.

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What would your product cost?

Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.

Claude Opus 4.8
$175.00/mo

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Frequently asked questions

How much does Claude Opus 4.8 cost per million tokens?

Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens (USD, list price). Cache read: $0.500. Batch tier: $2.50 / $12.50.

What context window does Claude Opus 4.8 have?

Claude Opus 4.8 accepts 1 M tokens of context per request and generates up to 128 K tokens per response.

Does Claude Opus 4.8 accept images, audio or files?

Input: text, image, PDF / file. Output: text.

Does Claude Opus 4.8 have a reasoning mode and tool calling?

It has a reasoning mode. It supports tool calling.

When was Claude Opus 4.8 released and what is its knowledge cutoff?

Claude Opus 4.8 has been available by API since 05/28/2026. Knowledge cutoff: 2026-01.

What would an app built on Claude Opus 4.8 cost?

With 10,000 requests a month of 1,500 input and 400 output tokens, Claude Opus 4.8 would cost about $175.00 a month at list price, without cache or batch discounts.

What is the API id of Claude Opus 4.8?

The id is anthropic/claude-opus-4.8. It is the name passed in the model parameter of the API (or on OpenRouter).

Where do the prices come from and how often are they updated?

From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.

What does price per million tokens mean?

It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.

Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.