
1. OpenAI (ChatGPT)
Tools: ChatGPT, GPT-4, Codex, DALL·E
Use: Conversations, code generation, content creation, image generation

2. Google AI (Gemini, formerly Bard)
Tools: Gemini, TensorFlow
Use: Search, productivity, language understanding, machine learning development

3. Microsoft Azure AI
Tools: Azure OpenAI Service, Copilot, Azure Cognitive Services
Use: Enterprise AI, chatbots, vision, speech, search

4. Amazon Web Services (AWS) AI
Tools: Amazon SageMaker, Lex, Rekognition, Polly
Use: Cloud-based AI/ML model building, image recognition, text-to-speech

5. IBM Watson
Tools: Watson Assistant, Watson Discovery, Watson Studio
Use: Business insights, chatbots, enterprise AI solutions