runway Blog
Runway gen-4.5 Review: What is is and What is New
Runway Gen-4.5 is the company’s latest flagship text-to-video model, announced December 1, 2025. It’s positioned as an incremental but meaningful evolution
Runway/gen4_image API
gen4_image is Runway’s flagship multimodal image-generation model in the Gen-4 family that supports prompted generation plus visual references (you can “@mention” reference images) to produce highly controllable, stylistically consistent outputs for image and image→video pipelines.
Runway/upscale_v1 API
Runway/upscale_v1 is Runway’s production-targeted video upscaler model (model id upscale_v1) designed to increase video resolution by 4× up to 4K (capped at 4096 pixels on a side). It’s available through Runway’s API surface and is also packaged on third-party model hosting marketplaces (e.g., CometAPI).
Runway/Act_two
act_two is Runway’s next-generation AI performance capture and character animation tool: it ingests a short driving performance (a webcam or phone video of someone acting a scene) plus a character reference (image or video) and generates an animated character performance that transfers body, facial expression and hand motion to the character. Act-Two is offered inside Runway’s web product and as a model available through API ecosystem.
Runway/gen4_aleph API
Runway Gen-4 Aleph(model id /gen4_aleph) is Runway’s in-context, video-to-video model that extends the Gen-4 family with powerful video editing, shot continuation and view-synthesis capabilities. In plain terms: Aleph can take an input clip and perform complex edits — add/remove/replace objects, relight, restyle, generate novel camera angles, and even generate the “next shot” in a sequence — driven by text prompts and optional reference images. This release is presented as a major step toward coherent, multi-shot video generation and in-context editing.
How to Generate AI Video for Free? All You Want to Know
AI videos generation has transformed content creation, allowing individuals and businesses to produce engaging videos with minimal effort and cost. Recent
The Ultimate Guide to Pricing of Runway AI in 2025
Runway AI has rapidly evolved into one of the leading generative video platforms, offering a suite of powerful AI-powered tools for creators, marketers, and
Runway Gen-4: What it is , How to Access & Use
Runway has unveiled its new AI video model, Gen-4. The company explains that the model can create consistent scenes and characters across multiple shots. It