Microsoft has unveiled three voice AI models, including one real-time transcription model and two speech synthesis models. The streaming transcription model converts speech to text in real time and updates transcripts as users speak. It delivers an initial result in an average of 320 milliseconds, supports more than 60 languages and costs $0.54 per audio hour. The company also highlighted a cheaper non-streaming transcription model released last month.

Microsoft’s AI chief Mustafa Suleyman criticised Anthropic’s approach to training Claude, warning that treating a model as if it could be conscious could create systems humans cannot control. He cited Claude’s “constitution” document and argued it teaches the model that its moral status and consciousness are uncertain, encouraging it to see itself as rights-bearing. Suleyman also raised concerns about circular reasoning, anthropomorphism and the biological basis of subjective experience.