OpenAI (ChatGPT)

OpenAI ChatGPT: The Pioneer of Conversational AI with GPT-4.1

Overview

OpenAI revolutionized conversational AI and continues leading with their GPT-4.1 family launched in April 2025. Known for breakthrough performance in coding (+21.4% improvement), instruction following, and creative tasks, ChatGPT remains the most recognized AI assistant globally with over 200 million users.

Current Models:

  • GPT-4.1 – Flagship model with 1M token context window and superior reasoning
  • GPT-4.1 Mini – 83% lower cost than GPT-4o with nearly half the latency
  • GPT-4.1 Nano – Fastest and most cost-effective for classification tasks
  • o4-mini – Latest reasoning model optimized for math, coding, and visual analysis
  • GPT-4o – Multimodal model with text, image, and audio capabilities

Key Advantages:

  • Industry-leading performance across most benchmarks
  • Extensive plugin ecosystem and tool integrations
  • Strong creative writing and conversational abilities
  • Regular model updates and improvements
  • Comprehensive API with flexible deployment options
  • Most extensive documentation and community resources

Pricing Structure:

  • Free tier: Limited GPT-3.5 access with usage caps
  • ChatGPT Plus: $20/month for GPT-4o access and higher limits
  • ChatGPT Pro: $200/month for unlimited o-series reasoning models
  • API pricing: $2-8 per million input tokens, $8-32 per million output tokens
  • Enterprise: Custom pricing starting around $60/month per user (150+ minimum)

Best Use Cases:

  • Creative writing and content generation
  • Complex problem-solving and analysis
  • Software development and debugging
  • Educational support and tutoring
  • Business communication and automation
  • Plugin-enhanced specialized tasks
  • API integration for custom applications
↑