{"model":"inworld-tts-1-5-mini","air":"inworld:tts@1.5-mini","name":"Inworld TTS-1.5 Mini","creator":"inworld","status":"live","releasedAt":"2026-01-21T00:00:00Z","weight":3,"headline":"Low-latency expressive text-to-speech optimized for real-time apps","description":"Inworld TTS-1.5 Mini is a lightweight text-to-speech model designed for real-time voice experiences with ultra-low latency and efficient performance. It delivers natural, expressive audio suitable for interactive agents, voice assistants, and conversational applications where responsiveness is critical. The Mini variant balances speed and quality, enabling responsive speech output even under constrained compute conditions.","capabilities":["io:text-to-audio","form:checkpoint"],"coverImage":"https://assets.runware.ai/covers/inworld-tts-1-5-mini.jpg","ogImage":"https://assets.runware.ai/og/inworld-tts-1-5-mini.png","pricingOverview":"$0.025 / 1000 characters","pricingRates":[{"amount":0.000025,"unit":"character"}],"pricingExamples":[{"configuration":"text-to-audio","price":"$0.00267","latencyMs":1757,"exampleId":"dockside-fishmonger-vocal-ambience"},{"configuration":"text-to-audio","price":"$0.00363","latencyMs":2145,"exampleId":"forensic-accounting-podcast-stinger"},{"configuration":"text-to-audio","price":"$0.00645","latencyMs":3456,"exampleId":"cold-war-numbers-station-bed"},{"configuration":"text-to-audio","price":"$0.0121","latencyMs":4149,"exampleId":"film-archive-preservation-lesson"}]}