All Anthropic models

Claude Opus 4.5

Anthropic · released November 2025

Claude Opus 4.5 is a Anthropic model with a 200K token context window — about 290 pages of text. It reads Files, Images, and Text and replies in Text. It can show its reasoning before it answers.

$5.75

input / 1M tokens

$28.75

output / 1M tokens

200K

context — about 290 pages

$0.05

a client proposal

Pricing

Input
$5.75 per million tokens
Output
$28.75 per million tokens
Cached input
$0.575 per million tokens
Cache writes
$7.19 per million tokens
Web search
1.1¢ per search

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
Anthropic
Released
November 2025 (2025-11-24)
Context window
200K tokens — about 290 pages
Max output
64K tokens per reply
Input
Files, Images, and Text
Output
Text
Reasoning
Shows its thinking before answering

Cost vs Token Amount

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80% Input20% Output
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Claude Opus 4.5

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What a task costs

2K tokens in · 500 tokens out.

Claude Opus 4.5

Anthropic

2.6¢

for this task

44% input · 56% output

Full pricing →

Your $5 welcome credit covers about 193 of these.

Compare Claude Opus 4.5

Closest in price on a typical task:

Claude Opus 4.5 vs Claude Opus 4.6 →Claude Opus 4.5 vs Claude Opus 4.7 →Claude Opus 4.5 vs Claude Opus 4.8 →Claude Opus 4.5 vs Claude Opus 5 →Any other combination →

Questions, answered

How much does Claude Opus 4.5 cost on Alyph?

Claude Opus 4.5 costs $5.75 per million input tokens and $28.75 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about $0.05. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is Claude Opus 4.5's context window?

200K tokens — about 290 pages. Replies can be up to 64K tokens long.

Can Claude Opus 4.5 read images and files?

Claude Opus 4.5 reads Files, Images, and Text. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does Claude Opus 4.5 show its reasoning?

Yes. Claude Opus 4.5 can expose its thinking before the final answer, so you can watch how it got there.

Test Claude Opus 4.5 against Claude Opus 4.6

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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