Reka Rho-1: The First AI That Generates Text, Images, and Video in One Model (October 2026)
What Is Reka Rho-1?
Reka AI released Rho-1 on October 5, 2026 as a research preview. It is a 19-billion-parameter omni-reasoning model trained from scratch to understand and generate text, images, and video within one unified network. It can also take actions — including robot control commands — without switching to a separate model.
This is a significant architectural shift. Until now, building a multimodal pipeline meant chaining specialist tools: GPT Image 2 for image generation, Veo 3.1 for video, and a reasoning model for text. Rho-1 collapses all three into a single inference call.
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What Rho-1 Can Do
Image generation
Rho-1 generates photorealistic images from text descriptions, with competent compositional ability. It doesn't yet match the sharpest dedicated image models (GPT Image 2 at #1 T2I, or Reve 2.0 at #2), but for workflows that also need video or reasoning in the same session, the trade-off is worth it.Image prompt example: "A luxury perfume bottle floating above a dark obsidian surface, dramatically lit from a single overhead spotlight, close-up three-quarter angle, luxury commercial photography, 4K."
Video generation
Rho-1 generates continuous video clips and — uniquely — accepts mid-run instructions, meaning you can redirect the output while it's generating without restarting. A distilled Flash variant generates 5.3-second clips in roughly one second using 8-step denoising.Video prompt example: "A slow-motion continuous close-up of a wave breaking on dark volcanic sand, the water crystalline blue-green over black stone, natural ambient sound, loopable 6-second clip."
Known limitations:
Text and reasoning
Rho-1 handles long-context reasoning, multi-step analysis, and code tasks. It also performs cross-modal reasoning — for example, analysing an uploaded image and then generating an improved version, all in one prompt.Cross-modal prompt example: "Describe the compositional choices in this image, identify three things that work well, and then generate an improved version with better lighting and a tighter crop."
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How Rho-1 Compares to Other Models
| Model | Image Gen | Video Gen | Reasoning | Best For |
|---|---|---|---|---|
| Reka Rho-1 | ★★★★☆ | ★★★☆☆ (672×384) | ★★★★★ | Omni workflows, research |
| GPT Image 2 | ★★★★★ | ✗ | ★★★★☆ | Consumer image generation |
| Gemini Omni Flash | ★★★★☆ | ★★★★★ | ★★★★☆ | Video with audio, speed |
| MiniMax H3 | ✗ | ★★★★★ | ★★★☆☆ | Image-to-video, 2K |
| Gemini 4 Argon | ✗ | ✗ | ★★★★★ | Coding, long-context agents |
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Who Should Use Reka Rho-1?
Good fit:
Not a fit yet:
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Getting Started with Rho-1
Access is through Reka's API (reka.ai) with a research preview waitlist. A limited free tier was available to researchers at launch. The Flash variant is the fastest entry point for video experimentation.
For ready-to-use copy-paste prompts across image generation, video generation, and reasoning tasks, see the Reka Rho-1 Prompt Generator — 20 prompts covering landscapes, product photography, nature videos, abstract loops, and cross-modal reasoning tasks.
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