Cohere Provider

Learn how to use Cohere models for text generation, embeddings, and reranking with the AI SDK.

Cohere Provider

The Cohere provider enables you to use Cohere’s language models for text generation, embeddings, and document reranking.

Installation

npm

npm install @ai-sdk/cohere

Setup

Get your API key from Cohere Dashboard and set it as an environment variable:

COHERE_API_KEY=your-api-key

Usage

Basic Text Generation

import { cohere } from '@ai-sdk/cohere';
import { generateText } from 'ai';

const { text } = await generateText({
  model: cohere('command-r-plus'),
  prompt: 'Explain natural language processing.',
});

Streaming Responses

import { cohere } from '@ai-sdk/cohere';
import { streamText } from 'ai';

const result = streamText({
  model: cohere('command-r-plus'),
  prompt: 'Write about language models.',
});

for await (const chunk of result.textStream) {
  process.stdout.write(chunk);
}

Structured Output

import { cohere } from '@ai-sdk/cohere';
import { generateObject } from 'ai';
import { z } from 'zod';

const { object } = await generateObject({
  model: cohere('command-r-plus'),
  schema: z.object({
    summary: z.string(),
    keywords: z.array(z.string()),
  }),
  prompt: 'Extract information from this text.',
});

Configuration

Custom Provider Instance

import { createCohere } from '@ai-sdk/cohere';

const cohere = createCohere({
  apiKey: process.env.COHERE_API_KEY,
  baseURL: 'https://api.cohere.com/v2',
});

Provider Options

• apiKey: Your Cohere API key (defaults to COHERE_API_KEY env var)
• baseURL: Custom API endpoint URL
• headers: Custom headers for requests

Available Models

Text Models

• command-a-03-2025 - Latest Command model
• command-r-plus - Most capable model
• command-r - Balanced performance
• command-r7b-12-2024 - Efficient 7B model

Reasoning Models

• command-a-reasoning-08-2025 - Reasoning model

Advanced Features

Tool Calling

import { cohere } from '@ai-sdk/cohere';
import { generateText } from 'ai';
import { z } from 'zod';

const result = await generateText({
  model: cohere('command-r-plus'),
  tools: {
    search_docs: {
      description: 'Search documentation',
      parameters: z.object({
        query: z.string(),
      }),
      execute: async ({ query }) => {
        return { results: [] };
      },
    },
  },
  prompt: 'Find information about embeddings.',
});

Reasoning

import { cohere } from '@ai-sdk/cohere';
import { generateText } from 'ai';

const { text, reasoning } = await generateText({
  model: cohere('command-a-reasoning-08-2025'),
  prompt: 'How many sisters does Alice\'s brother have if Alice has 3 brothers and 2 sisters?',
  providerOptions: {
    cohere: {
      thinking: {
        type: 'enabled',
        tokenBudget: 100,
      },
    },
  },
});

console.log('Reasoning:', reasoning);
console.log('Answer:', text);

Embeddings

import { cohere } from '@ai-sdk/cohere';
import { embed } from 'ai';

const { embedding } = await embed({
  model: cohere.embedding('embed-english-v3.0'),
  value: 'Document to embed',
  providerOptions: {
    cohere: {
      inputType: 'search_document',
    },
  },
});

Available Models:

• embed-english-v3.0 (1024 dimensions)
• embed-multilingual-v3.0 (1024 dimensions)
• embed-english-light-v3.0 (384 dimensions)

Input Types:

• search_document - For documents in a vector database
• search_query - For search queries
• classification - For classification tasks
• clustering - For clustering tasks

Reranking

import { cohere } from '@ai-sdk/cohere';
import { rerank } from 'ai';

const documents = [
  'AI is transforming healthcare.',
  'Machine learning powers recommendations.',
  'Cloud computing enables scalability.',
];

const { ranking } = await rerank({
  model: cohere.reranking('rerank-v3.5'),
  documents,
  query: 'artificial intelligence applications',
  topN: 2,
});

console.log(ranking);
// [
//   { originalIndex: 0, score: 0.95, document: 'AI is transforming healthcare.' },
//   { originalIndex: 1, score: 0.87, document: 'Machine learning powers recommendations.' }
// ]

Available Models:

• rerank-v3.5 - Latest reranking model
• rerank-english-v3.0 - English-only
• rerank-multilingual-v3.0 - Multilingual support

Model Capabilities

Model	Tools	Structured Output	Reasoning
command-a-03-2025	✓	✓	✗
command-r-plus	✓	✓	✗
command-r	✓	✓	✗
command-a-reasoning	✓	✓	✓

Resources

• Cohere Documentation
• AI SDK Documentation
• Cohere API Reference