How to Create a Cohere API Key | Setup Guide

🔑 How to Create a Cohere API Key

Learn how to create and manage Cohere API keys to access Cohere’s powerful language models including Command, Command R+, Embed, and Rerank.

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🔹 What is a Cohere API Key?

A Cohere API key enables you to:

• Access Cohere’s large language models
• Use text generation and chat capabilities
• Generate embeddings for semantic search
• Rerank search results for better relevance
• Build AI-powered applications and chatbots

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🔹 Prerequisites

Before creating an API key, you need:

1. Cohere Account → Sign up at https://dashboard.cohere.com/welcome/register
2. Email Verification → Verify your email address
3. Internet Connection → For API access

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🔹 Step-by-Step: Creating a Cohere API Key

Step 1: Sign Up for Cohere

1. Go to Cohere Dashboard
2. Click “Sign Up” or “Get Started”
3. Create an account using:
   • Email and password
   • Google account (OAuth)
   • GitHub account
4. Verify your email address

Step 2: Access the API Keys Section

1. Log in to Cohere Dashboard
2. You’ll see the API Keys section on the main dashboard

Or navigate directly to: https://dashboard.cohere.com/api-keys

Step 3: View Your Default API Keys

Cohere automatically provides you with:

• Trial API Key → For testing and development
• Production Key → For live applications (requires payment method)

Step 4: Create Additional API Keys (Optional)

1. Click “Create API Key” or ”+ New API Key”
2. Enter a name for the key (e.g., “Development”, “Production App”)
3. Click “Create”

Step 5: Copy Your API Key

1. Copy the API key from the dashboard
2. Store it securely in a password manager or environment variable
3. You can view your keys anytime in the dashboard

Example API key format:

abcdefgh-1234-5678-90ab-cdefghijklmn

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🔹 API Key Types

Trial Key:

• ✅ Free to use
• ✅ Access to all models
• ⚠️ Rate limited (100 API calls per minute)
• ⚠️ Limited to 100 requests per month (free tier)

Production Key:

• ✅ Higher rate limits
• ✅ Pay-as-you-go pricing
• ✅ Better performance and reliability
• ✅ Full support

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🔹 Managing Your API Keys

View Existing Keys:

1. Go to API Keys
2. You’ll see:
   • Key name
   • Key type (Trial/Production)
   • Created date
   • Actions (Copy, Delete)

Delete an API Key:

1. Find the key you want to remove
2. Click the trash icon or “Delete”
3. Confirm the deletion

⚠️ Warning: Deleting a key immediately stops all applications using it.

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🔹 API Key Security Best Practices

✅ DO:

• Store keys in environment variables
• Use .env files for local development
• Rotate keys periodically
• Use different keys for dev and production
• Monitor API usage regularly

❌ DON’T:

• Hardcode keys in source code
• Commit keys to Git repositories
• Share keys publicly
• Use trial keys in production
• Embed keys in client-side code

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🔹 Using Your Cohere API Key

Method 1: Environment Variable (Recommended)

Linux/macOS:

export COHERE_API_KEY="your-api-key-here"

Windows CMD:

set COHERE_API_KEY="your-api-key-here"

Windows PowerShell:

$env:COHERE_API_KEY="your-api-key-here"

Method 2: .env File

Create a .env file:

COHERE_API_KEY=your-api-key-here

Load it in your code:

Python:

from dotenv import load_dotenv
import os

load_dotenv()
api_key = os.getenv("COHERE_API_KEY")

Node.js:

require('dotenv').config();
const apiKey = process.env.COHERE_API_KEY;

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🔹 Testing Your API Key

Python Example - Chat:

import cohere
import os

co = cohere.Client(os.getenv("COHERE_API_KEY"))

response = co.chat(
    message="Hello, Cohere!",
    model="command"
)

print(response.text)

Python Example - Text Generation:

import cohere
import os

co = cohere.Client(os.getenv("COHERE_API_KEY"))

response = co.generate(
    model="command",
    prompt="Write a short story about AI:",
    max_tokens=100
)

print(response.generations[0].text)

Python Example - Embeddings:

import cohere
import os

co = cohere.Client(os.getenv("COHERE_API_KEY"))

response = co.embed(
    texts=["Hello, world!", "Cohere is amazing!"],
    model="embed-english-v3.0"
)

print(response.embeddings)

cURL Example:

curl https://api.cohere.ai/v1/generate \
  -H "Authorization: Bearer $COHERE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "command",
    "prompt": "Hello, Cohere!",
    "max_tokens": 50
  }'

Node.js Example:

const { CohereClient } = require('cohere-ai');

const cohere = new CohereClient({
  token: process.env.COHERE_API_KEY,
});

(async () => {
  const response = await cohere.chat({
    message: 'Hello, Cohere!',
    model: 'command',
  });

  console.log(response.text);
})();

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🔹 Available Cohere Models

Model	Description	Best For
command-r-plus	Most capable model	Complex tasks, reasoning
command-r	Balanced model	General-purpose applications
command	Fast, reliable	Production chatbots
command-light	Faster, smaller	Quick responses
embed-english-v3.0	Embeddings	Semantic search, RAG
embed-multilingual-v3.0	Multilingual embeddings	Global applications
rerank-english-v3.0	Reranking	Search result optimization

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🔹 Understanding Pricing

Cohere uses pay-as-you-go pricing:

Free Trial:

• 100 API calls per minute
• Limited monthly quota
• Access to all models

Production Pricing:

Varies by model and usage:

• Text generation: Based on tokens
• Embeddings: Based on number of texts
• Rerank: Based on documents processed

Check pricing: https://cohere.com/pricing

Monitor Usage:

1. Go to Usage Dashboard
2. View:
   • API calls
   • Token consumption
   • Cost estimates

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🔹 Setting Up Billing

To use production keys:

1. Go to Billing in the dashboard
2. Click “Add Payment Method”
3. Enter your credit card details
4. Set spending limits (optional)
5. Save your payment method

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🔹 Rate Limits

Trial Key:

• 100 requests per minute
• Monthly quota limits

Production Key:

• Higher rate limits (varies by plan)
• Custom limits available for enterprise

To increase limits, contact support@cohere.com

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🔹 Common Issues and Troubleshooting

Issue 1: “Invalid API Key”

Solution:

• Verify the key is copied correctly
• Ensure no extra spaces
• Check if key was deleted

Issue 2: “Rate Limit Exceeded”

Solution:

• You’ve hit the trial key limit
• Upgrade to production key
• Implement retry logic with backoff

Issue 3: “Insufficient Credits”

Solution:

• Add payment method
• Top up account balance
• Check billing settings

Issue 4: “Model Not Found”

Solution:

• Verify model name is correct
• Check available models in documentation
• Some models may require specific access

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🔹 SDK Installation

Python:

pip install cohere

Node.js:

npm install cohere-ai

Go:

go get github.com/cohere-ai/cohere-go/v2

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🔹 Advanced Features

Retrieval Augmented Generation (RAG):

import cohere

co = cohere.Client(api_key="your-key")

response = co.chat(
    message="What is Cohere?",
    documents=[
        {"title": "About", "snippet": "Cohere provides LLM APIs..."}
    ],
    model="command"
)

print(response.text)

Streaming Responses:

import cohere

co = cohere.Client(api_key="your-key")

stream = co.chat_stream(
    message="Tell me a story",
    model="command"
)

for event in stream:
    if event.event_type == "text-generation":
        print(event.text, end='')

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🔹 Additional Resources

• Official Documentation: https://docs.cohere.com
• API Reference: https://docs.cohere.com/reference
• Dashboard: https://dashboard.cohere.com
• Pricing: https://cohere.com/pricing
• Community Discord: https://discord.gg/cohere
• Python SDK: https://github.com/cohere-ai/cohere-python
• Node SDK: https://github.com/cohere-ai/cohere-typescript

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🚀 Conclusion

You now know how to: ✅ Create and manage Cohere API keys
✅ Choose between trial and production keys
✅ Use Cohere models in your applications
✅ Monitor usage and manage billing
✅ Troubleshoot common issues

Start building with Cohere’s powerful language models! 🎯