Question 1

What is the cost of Claude Sonnet 5 by Vertex?

Accepted Answer

Claude Sonnet 5 by Vertex costs $2.00 per 1M input tokens and $10.00 per 1M output tokens. Cached reads cost $0.20 per 1M tokens. Cache writes cost $2.50 per 1M tokens.

Question 2

What is the context window of Claude Sonnet 5 by Vertex?

Accepted Answer

Claude Sonnet 5 by Vertex 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 Sonnet 5 by Vertex?

Accepted Answer

Claude Sonnet 5 by Vertex supports advanced reasoning, tool calling/function calling, file attachments. It has closed weights.

Question 4

What input and output types does Claude Sonnet 5 support?

Accepted Answer

Claude Sonnet 5 by Vertex accepts text, image, pdf as input and can generate text as output.

Question 5

Does Claude Sonnet 5 by Vertex support reasoning?

Accepted Answer

Yes, Claude Sonnet 5 by Vertex supports advanced reasoning capabilities.

Question 6

Is Claude Sonnet 5 by Vertex open source?

Accepted Answer

No, Claude Sonnet 5 by Vertex has closed weights. The model is only available through the Vertex API.

Question 7

Does Claude Sonnet 5 support function calling?

Accepted Answer

Yes, Claude Sonnet 5 by Vertex 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 Sonnet 5?

Accepted Answer

Claude Sonnet 5 by Vertex has a knowledge cutoff date of 2026-01-31. This means the model was trained on data available up until that date.

Claude Sonnet 5 API

Input Modalities

Output Modalities

Standard (per 1M tokens)

Caching (per 1M tokens)