ChatGPT Writer vs New API

Side-by-side comparison · Updated October 2026

 ChatGPT WriterChatGPT WriterNew APINew API
DescriptionChatGPT Writer is your personal AI assistant designed to streamline your writing experience across various platforms. Whether you need help with writing emails, fixing grammar, improving writing, or translating text, ChatGPT Writer offers advanced AI features to assist you. It integrates seamlessly with Gmail and supports a wide range of browsers, ensuring that you can easily access its services anytime. It also emphasizes privacy and security with features like data encryption and no third-party sharing. Ideal for individual users, small businesses, and enterprises, ChatGPT Writer offers different plans to cater to your specific needs, including a comprehensive free plan and more advanced paid options.New API is a self-hosted AI gateway and model-management project maintained in the QuantumNous repository. It brings provider channels, access tokens, model restrictions, usage statistics and cost accounting into one interface. Teams supply their own authorized model-provider access and operate the gateway in their chosen environment. The gateway supports several API formats, including OpenAI-compatible requests, Claude Messages and Google Gemini. Compatibility has boundaries: the README marks Gemini-to-OpenAI conversion as text-only without function calling, and OpenAI-compatible to Responses conversion as in development. Test the exact endpoints, streaming behavior and tool calls your application uses before switching traffic. Routing features include weighted channel selection, automatic retry after failures and user-level model rate limits. The dashboard supports request-based, usage-based and cache-hit cost accounting, with token grouping and model-access controls. These controls can help organize usage, but retries and a common API format do not guarantee uninterrupted service or identical behavior across providers. The current repository license is AGPLv3. Docker Compose is the recommended quick-start path in the README, which also documents Docker commands with SQLite or MySQL. Running the software still involves infrastructure, operations and upstream model charges. Review the current license, secure your deployment and validate accounting against provider bills. Compare LiteLLM if you also want a Python SDK or a documented gateway for MCP servers and agents.
CategoryAI AssistantDeveloper Tools
RatingNo reviewsNo reviews
PricingFreemiumOpen Source
Starting PriceFreeN/A
Plans
  • Elite Plan — $39/mo
  • Elite Plan — $349/yr
  • Pro Plan — $16/mo
  • Pro Plan — $160/yr
  • Free Plan — Free
—
Use Cases
  • Busy Professionals
  • Students
  • Small Business Owners
  • Non-native English Speakers
  • Development Teams
  • SaaS Companies
  • DevOps Engineers
  • Finance Teams
Tags
AI writing assistantGrammar correctionEmail supportTranslationBrowser integration
AI gatewayLLM routingmodel managementrate limitingusage accounting
Features
Email and message writing
Grammar correction
Content improvement
Text translation
Advanced Gmail integration
Multiple launch options
Browser compatibility
Data encryption and privacy
Free and paid plans
Priority support for premium users
Self-hosted AI gateway and model management
Provider channels, token groups and model restrictions
OpenAI-compatible, Claude Messages and Gemini format support
Documented limits on protocol conversion
Weighted channel selection and failure retries
User-level model rate limiting
Request, usage and cache-hit cost accounting
Docker Compose deployment documentation
 View ChatGPT WriterView New API

Modify This Comparison