Features Capabilities ChatGPT Comparison Azure OpenAI Service Applications ChatGPT-4o Launch Comparisons Opinions Reactions Release Criticisms Product Reveal Project Astra Gemini Pro Synthetic Voice Voice Mode Performance Safety Measures User Accessibility Voice Feature Azure AI Studio GPT-4 Voice Controversy Advanced Reasoning Capabilities Integration GPT-4o Voice Assistant Voice Assistant Technology Voice Assistants GPT-4o mini Canvas Interface Voice, Text, and Vision Reasoning GPT-4o Testing Implications User Interaction Deployment GPT-4o Features Launch Event Market Impact Competitors Future Developments GPT-4 Turbo Availability Updates Voice Capabilities Challenges Customer Service Digital Assistant Omnimodal Capabilities