> This page is for version v1 API.
> For other versions, use one of these documentation indexes:
> - v2 API (default): https://docs.cohere.com/v2/llms.txt
> - v1 API: https://docs.cohere.com/v1/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.cohere.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.cohere.com/_mcp/server.

# Cohere's Command A Reasoning Model

> Command A Reasoning excels in tool use, agentic workflows, and complex problem-solving. It has 111 billion parameters and a 256k context length.

## Description

Command A Reasoning is Cohere's first reasoning model to date, excelling at real world enterprise tasks including tool use, retrieval augmented generation (RAG), agents, and multilingual use cases. At 111B parameters, Command A has a context length of 256K. Command-a-Reasoning (CAR) is optimized to run on 4x H100 GPUs for production workloads. For non-production tasks such as tryouts and evaluations, it can also run on 4x A100 GPUs.

## What Can Command A Reasoning Be Used For?

Command A is excellent for:

* **Agentic Use Cases**: Taking autonomous actions and interacting with the environment to solve problems.
* **Tool Use**: Able to leverage a variety of tools, such as search engines and APIs.
* **Multilingual**: Able to reason over multilingual inputs, providing support to user queries in 23 different languages.

There's more to be said about token budgets, enabling and disabling the `thinking` operation, etc., which can be found in our dedicated [Reasoning guide](/docs/reasoning).