xAI has expanded its Imagine Video 1.5 model with new reference-based generation features, image and voice consistency tools, and native 1080p output.

The update builds on last month's Imagine Video 1.5 launch, adding text-to-video generation that requires no starting image, alongside native 1080p resolution for both text-to-video and image-to-video modes. A new voice consistency feature lets users pair a character image with a voice reference so the same face and voice persist across scenes.

The most significant addition is multi-reference support, allowing up to seven reference images per generation. Each reference can lock a specific element in place, such as a character, a scene, or a product, letting users swap other elements while keeping that one fixed.

Image and voice references are rolling out first to SuperGrok Heavy and SuperGrok Plus subscribers in the US via grok.com and iOS, with wider tier availability expected within days. Text-to-video and native 1080p are already generally available across grok.com, iOS, and Android.

The features are also live in the xAI API under the model grok-imagine-video-1.5, covering image references, text-to-video, and 1080p output.

Mobile Identity vs SMS OTP: 5 APIs could get you there
When 15-20% of SMS one-time passwords fail to deliver, you’re not just losing security—you’re losing customers. Companies switching to network APIs report 4-5% growth uplift. SIM swap attacks are up 1,000% in some markets. SMS pumping fraud costs tens of thousands monthly. Authentication delays cause measurable abandonment. Yet enterprises remain stuck on infrastructure everyone agrees is obsolete. Bahadir “Bob” Yavuz, Head of Products at GTC, and Stewart Tinson, Project Director at AI-360 You’ll learn: • Why SMS delivery rates run 15-20% below submission rates—and what that costs you • How network APIs like Number Verify deliver verification in 1-2 seconds vs 15-20 for SMS • The Indonesia model: 200+ million users, 20% improvement, all three telcos collaborating • Which APIs can achieve both an enhanced quality of security, and quality of service to the end user Key topics: Synthetic identity detection • Number Verify vs SMS OTP • SIM swap attack patterns • GSMA Camara and OpenGateway standards • Data quality in fraud detection • GDPR privacy-by-design architecture • Telco collaboration requirements • Real-world deployment case studies • False positive rate management • Network API productization For CISOs, CIOs, CFOs, and security teams evaluating authentication strategies, this session provides the business case, technical reality, and deployment roadmap for moving beyond SMS.
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