{"model":"inworld-tts-1-5-max","air":"inworld:tts@1.5-max","name":"Inworld TTS-1.5 Max","creator":"inworld","status":"live","releasedAt":"2026-01-21T00:00:00Z","weight":3,"headline":"High-fidelity expressive text-to-speech with rich prosody and multilingual support","description":"Inworld TTS-1.5 Max is a high-fidelity text-to-speech model engineered for expressive voice synthesis with rich prosody, nuanced emotional range, and broadcast-ready audio quality. It supports a wide set of languages and delivers more natural pronunciation and expressive variation suitable for narration, content creation, and immersive character voices. The Max variant prioritizes audio quality and expressiveness while still supporting responsive generation.","capabilities":["io:text-to-audio","form:checkpoint"],"coverImage":"https://assets.runware.ai/covers/inworld-tts-1-5-max.jpg","ogImage":"https://assets.runware.ai/og/inworld-tts-1-5-max.png","pricingOverview":"$0.05 / 1000 characters","pricingRates":[{"amount":0.00005,"unit":"character"}],"pricingExamples":[{"configuration":"text-to-audio","price":"$0.00455","latencyMs":2834,"exampleId":"championship-pinball-broadcast-vocal-stinger"},{"configuration":"text-to-audio","price":"$0.00515","latencyMs":2954,"exampleId":"seed-library-vocal-audio-logo"},{"configuration":"text-to-audio","price":"$0.0251","latencyMs":7808,"exampleId":"antarctic-field-lab-pa-bed"},{"configuration":"text-to-audio","price":"$0.0297","latencyMs":8716,"exampleId":"urban-forestry-podcast-cold-open"},{"configuration":"text-to-audio","price":"$0.0297","latencyMs":9137,"exampleId":"cold-storage-energy-explainer-voiceover"}]}