Question 1

What is the cost of Claude Opus 4.8 by Vertex (Anthropic)?

Accepted Answer

Claude Opus 4.8 by Vertex (Anthropic) costs $5.00 per 1M input tokens and $25.00 per 1M output tokens. Cached reads cost $0.50 per 1M tokens. Cache writes cost $6.25 per 1M tokens.

Question 2

What is the context window of Claude Opus 4.8 by Vertex (Anthropic)?

Accepted Answer

Claude Opus 4.8 by Vertex (Anthropic) has a context window of 1.0M tokens. It supports up to 1.0M input tokens and can generate up to 128K output tokens.

Question 3

What are the capabilities of Claude Opus 4.8 by Vertex (Anthropic)?

Accepted Answer

Claude Opus 4.8 by Vertex (Anthropic) supports advanced reasoning, tool calling/function calling, file attachments. It has closed weights.

Question 4

What input and output types does Claude Opus 4.8 support?

Accepted Answer

Claude Opus 4.8 by Vertex (Anthropic) accepts text, image, pdf as input and can generate text as output.

Question 5

Does Claude Opus 4.8 by Vertex (Anthropic) support reasoning?

Accepted Answer

Yes, Claude Opus 4.8 by Vertex (Anthropic) supports advanced reasoning capabilities.

Question 6

Is Claude Opus 4.8 by Vertex (Anthropic) open source?

Accepted Answer

No, Claude Opus 4.8 by Vertex (Anthropic) has closed weights. The model is only available through the Vertex (Anthropic) API.

Question 7

Does Claude Opus 4.8 support function calling?

Accepted Answer

Yes, Claude Opus 4.8 by Vertex (Anthropic) supports tool calling (also known as function calling), allowing it to interact with external tools and APIs during conversations.

Question 8

What is the knowledge cutoff date for Claude Opus 4.8?

Accepted Answer

Claude Opus 4.8 by Vertex (Anthropic) has a knowledge cutoff date of 2026-01. This means the model was trained on data available up until that date.

Claude Opus 4.8 API

Input Modalities

Output Modalities

Standard (per 1M tokens)

Caching (per 1M tokens)