Command R+

Command R+ is Cohere's newest large language model, optimized for conversational interaction and long-context tasks. It aims at being extremely performant, enabling companies to move beyond proof of concept and into production.

We recommend using Command R+ for those workflows that lean on complex RAG functionality and multi-step tool use (agents). Command R, on the other hand, is great for simpler retrieval augmented generation (RAG) and single-step tool use tasks, as well as applications where price is a major consideration.

Model Details

Unique Command R+ Model Capabilities

Command R+ has been trained on a massive corpus of diverse texts in multiple languages, and can perform a wide array of text-generation tasks. Moreover, Command R+ has been trained with a particular focus on excelling in some of the most critical business use-cases.

Note, however, that RAG and multi-step tool use (agents) are currently only available in English.

Multilingual Capabilities

The model is optimized to perform well in the following languages: English, French, Spanish, Italian, German, Brazilian Portuguese, Japanese, Korean, Simplified Chinese, and Arabic.

Additionally, pre-training data has been included for the following 13 languages: Russian, Polish, Turkish, Vietnamese, Dutch, Czech, Indonesian, Ukrainian, Romanian, Greek, Hindi, Hebrew, Persian.

The model has been trained to respond in the language of the user. Here's an example:

co.chat(
  message="Écris une description de produit pour une voiture électrique en 50 à 75 mots"
)

And here's what the response might look like:

Découvrez la voiture électrique qui va révolutionner votre façon de conduire.
Avec son design élégant, cette voiture offre une expérience de conduite unique
avec une accélération puissante et une autonomie impressionnante. Sa
technologie avancée vous garantit une charge rapide et une fiabilité inégalée.
Avec sa conception innovante et durable, cette voiture est parfaite pour les 
trajets urbains et les longues distances. Profitez d'une conduite silencieuse
et vivez l'expérience de la voiture électrique!

Command R+ can also perform cross-lingual tasks, such as translation or answering questions about content in other languages.

Retrieval Augmented Generation

Command R+ has the ability to ground its English-language generations. This means that it can generate responses based on a list of supplied document snippets, and it will include citations in its response indicating the source of the information.

For more information, check out our dedicated guide on retrieval augmented generation.

Multi-Step Tool Use

Tool use is a technique which allows developers to connect Cohere's models to external tools--search engines, APIs, functions, databases, etc.--and use them to perform various actions.

Tool use comes in single-step and multi-step variants. In the former, the model has access to a bevy of tools to generate a response, and it can call multiple tools, but it must do all of this in a single step. The model cannot execute a sequence of steps, and it cannot use the results from one tool call in a subsequent step. In the latter, however, the model can call more than one tool in a sequence of steps, using the results from one tool call in a subsequent step. This process allows the language model to reason, perform dynamic actions, and quickly adapt on the basis of information coming from external sources.

Command R+ has been trained with multi-step tool use capabilities, with which it is possible to build simple agents. This functionality takes a conversation as input (with an optional user-system preamble), along with a list of available tools. The model will then generate a json-formatted list of actions to execute on a subset of those tools. For more information, check out our dedicated multi-step tool use guide.

Temporary Context Window Caveat

We have a known issue where prompts between 112K - 128K in length result in bad generations. We are working to get this resolved, and we appreciate your patience in the meantime.