---
title: Anthropic: Claude Opus 4.5 — Context Window and Pricing
canonical: https://prompeteer.ai/models/anthropic-claude-opus-4-5
updated: 2026-09-22T00:00:00-07:00
source: OpenRouter /models
---

# Anthropic: Claude Opus 4.5

Anthropic: Claude Opus 4.5 offers a 200,000-token context window at $5.00 per 1M input tokens and $25.00 per 1M output tokens.

| Attribute | Value |
| --- | --- |
| Context window | 200,000 tokens |
| Input price | $5.00 / 1M |
| Output price | $25.00 / 1M |
| Input modalities | file, image, text |
| Model id | anthropic/claude-opus-4.5 |

## FAQ

**What is the context window of Anthropic: Claude Opus 4.5?**

Anthropic: Claude Opus 4.5 supports up to 200,000 tokens of context.

**How much does Anthropic: Claude Opus 4.5 cost?**

$5.00 per 1M input tokens and $25.00 per 1M output tokens (via OpenRouter /models, as of Sep 22, 2026).

**What input types does Anthropic: Claude Opus 4.5 support?**

Anthropic: Claude Opus 4.5 accepts file, image, text.

Source: Data via OpenRouter /models — as of Sep 22, 2026.

## Sources and scope

[OpenRouter model catalogue feed](https://openrouter.ai/api/v1/models)

- [Anthropic: Claude Opus 4.5 source listing](https://openrouter.ai/anthropic/claude-opus-4.5)

These are provider-catalog specifications, not a task-quality benchmark. Prices describe the source listing and may vary by provider or routing. Unknown values are shown as — when the feed did not supply that value.

## Try your task

[Open the prompt composer](/create)

Open the composer and choose a supported target model. The reference catalogue may include models unavailable in the composer.