Rerank 3.5 — Free AI Model & API

cohere/rerank-3-5

chat embedding

Get API key →

Context Window 131K

Max Output 131K

Rate Limit 10 RPM

Cost $0.00 FREE

Free Period Since May 10, 2026

Credit Card Not required

Status Online

Overview

Cohere's Rerank 3.5 is a 131K token text model ideal for chat and embedding tasks, with no credit card required and openAI incompatible, offering 10 RPM rate limit.

Model ID

rerank-3-5

Base URL

https://api.cohere.com/v2

Specifications

Context: 131K · Output: 131K · Modality: text · OpenAI Compat: No

Quick Start

Integrate Rerank 3.5 with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
 base_url="https://api.cohere.com/v2",
 api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
 model="rerank-3-5",
 messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const openai = new OpenAI({
 baseURL: "https://api.cohere.com/v2",
 apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
 model: "rerank-3-5",
 messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);

curl "https://api.cohere.com/v2/models/rerank-3-5:generateContent?key=YOUR_API_KEY" \
 -H "Content-Type: application/json" \
 -d '{
 "contents": [{"parts": [{"text": "Hello!"}]}]
 }'

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Rate Limits & Constraints

Rate Limit 10 RPM

Context Window 131K

Max Output Tokens 131K

Cost Free — since May 10, 2026

Credit Card Not required

OpenAI Compatible No — uses provider-native API

Cohere Platform Limitations

1,000 API calls/month is low for production use
Trial key expires — not permanently free
Limited to 20 RPM across all models

Features & Use Cases

Best For

ChatEmbedding

Modality Support

text

Cohere Highlights

Command A (111B) on free tier
1,000 API calls/month
Embed and Rerank models included
No credit card required

Playground — Test Rerank 3.5

Test Rerank 3.5 directly in your browser. Your API key is sent directly to Cohere — never stored.

Model: Rerank 3.5 Get Key

🔒 Your key is never stored — sent directly to the model provider via our server proxy.

Ready to chat with Rerank 3.5.

Frequently Asked Questions

How do I get an API key for Rerank 3.5?

Sign up at Cohere to get your API key. No credit card is required — just an email sign-up. Once you have the key, use the code snippets in the Quick Start section above.

Is Rerank 3.5 really free?

Yes. Rerank 3.5 is available on Cohere's free tier and has been free since May 10, 2026. Rate limits apply: 10 RPM. Always check the provider's terms for any changes to the free tier.

What are Rerank 3.5's rate limits?

10 RPM Context window: 131K. Max output: 131K. No credit card required.

What are the best free alternatives to Rerank 3.5?

Popular free alternatives include inclusionAI: Ring-2.6-1T, Baidu Qianfan: CoBuddy (free), Owl Alpha. You can also browse all 147+ free models on our site.