Amazon is looking to charge a monthly subscription fee between $5-$10 (roughly £3.99-£7.99) for a next-generation Alexa voice assistant that competes directly with OpenAI’s latest ChatGPT model, the upgraded Siri powered by Apple Intelligence, and Google Gemini, sources speaking to Reuters have revealed. Alexa — one of the most popular voice-activated assistants — is currently available at no cost to anyone who owns an Amazon Echo smart speaker, smart display, Fire TV set-top box, or downloads the Alexa app. While Alexa was instrumental in the success of AI voice assistants, it has fallen behi…