Jetwriter AI vs Spike

Comparing the features of Jetwriter AI to Spike

Feature
Jetwriter AI
Spike

Capability Features

AI-Powered Email
Ask Me Anything
Brainstorming
Business Productivity Tools
Chat with Page
Data Encrypted In-Transit
Data Not Shared
Fix Grammar
Grammer Correction
High Quality Responses
Launch by Selecting Text
Launch from Extension Icon
Launch via Shortcut
Lightweight Extension
< 1MB
No Data Used for AI Training
Personalized AI Profile
Premium Features
Prompt Templates
Research
Response Length Control
Select Text and Right-Click
Summarization
Supported Languages
Supported Writing Styles
Switch AI Models
Translation
User Support
Write Emails
Writing Improvement

Integration Features

AI Model Access
GPT-5Claude SonnetGemini ProChatGPTDeepSeekGemini FlashGPT-5 mini
Popular Site Integrations
GmailLinkedInFreshdeskZoho
Supported Platform
Chrome ExtensionWeb AppMobile
Web App

Limitation Features

Extension Not Supported on All Browsers

Pricing Features

Free Tier