Question: I'm looking for a language learning platform that provides personalized feedback on speaking and writing exercises.

If you want a language learning platform with personalized feedback for speaking and writing exercises, Talkpal is a good choice. It uses GPT to offer conversational interactions, real-time feedback, and active listening exercises that adapt to your needs for speaking, listening, writing and pronunciation. The service is available in more than 15 languages and offers a variety of interactive features, including roleplays and debates. Premium subscriptions offer unlimited practice and personalized feedback.

Another good option is LangAI, which lets you practice conversations in more than 20 languages with immediate corrections and feedback to help you speak more fluently. LangAI offers real-time error correction, natural conversations on any subject and automatic transcription. The service supports many languages and offers both free and paid accounts, so you can use it at different levels of practice.

For personalized conversational language learning, Speak is also worth a look. It combines large language models like GPT-4 with advanced speech recognition to offer free-form conversations and feedback on vocabulary and grammar. The app uses OpenAI's automatic speech recognition API for high accuracy and fast response times, making it potentially a revolutionary tool for language learners.

Last, check out SpeakPal, which offers chat with AI language tutors in 28 languages. The service includes courses covering many levels of proficiency and offers real-time feedback and downloadable exercises. SpeakPal offers tiered pricing options to suit different needs, so you can have fun and learn a new language.