Canonical page: https://mixerai.org/en/knowledge/compare/gemini-omni-1-2-flash-vs-heygen-video/ Prices on this page are live: current values come from https://mixerai.org/api/knowledge/prices?lang=en. A dash means the value did not load. [Mixer AI](https://mixerai.org/en/) › [Knowledge Base](https://mixerai.org/en/knowledge/) › [Comparison](https://mixerai.org/en/knowledge/compare/) › Gemini Omni 1.2 Flash vs HeyGen Video: specs and price # Gemini Omni 1.2 Flash vs HeyGen Video: specs and price Gemini Omni 1.2 Flash — resolutions: 360p / 720p / 1080p / 4K; first frame: Yes. [Try it on Mixer AI](https://mixerai.org/en/#/canvas?dl=kb_gemini-omni-1-2-flash-vs-heygen-video) ## When to choose Gemini Omni 1.2 Flash and when HeyGen Video ### Gemini Omni 1.2 Flash - Resolutions: 360p / 720p / 1080p / 4K vs 768p for HeyGen Video - Generation modes: from text / from first and last frames / from references / video editing vs from text for HeyGen Video - First frame: Yes vs No for HeyGen Video - Last frame: Yes vs No for HeyGen Video ### HeyGen Video - Prompt limit: 32,000 characters vs 20,000 characters for Gemini Omni 1.2 Flash - Aspect ratios: 6 vs 2 for Gemini Omni 1.2 Flash ## Key differences Gemini Omni 1.2 Flash: Video from text, frames and references, editing and extension. HeyGen Video: Creates videos with sound from a text prompt or a single source image. ## Specifications | Spec | Gemini Omni 1.2 Flash | HeyGen Video | Generation modes | from text / from first and last frames / from references / video editing | from text | First frame | Yes | No | Last frame | Yes | No | Input photos | up to 10 | up to 1 | Input videos | 1, required | No | Minimum duration | 3 s | 5 s | Maximum duration | 15 s | 15 s | Resolutions | 360p / 720p / 1080p / 4K | 768p | Aspect ratios | 9:16 / 16:9 | 9:16 / 16:9 / 1:1 / 4:3 / 3:4 / 21:9 | Prompt limit | 20,000 characters | 32,000 characters | Price (different settings) | — | — coins · 768p There is no shared resolution for a direct price comparison, so each price includes its setting and is not highlighted as cheaper. ## What to compare visually For a fair A/B test, use the same scene and, where both modes allow it, the same first frame. Inspect motion continuity, character and object consistency, physics and contacts, camera behavior, temporal deformation, in-clip cuts and audio synchronization. ## What to inspect with Gemini Omni 1.2 Flash Video from text, frames and references, editing and extension. - Text: the result is created from a written description. - First and last frame: two photos set how the clip starts and ends. - The result length is 3 to 15 seconds. - At most 10 photos as input. ## What to inspect with HeyGen Video Creates videos with sound from a text prompt or a single source image. - Text: the result is created from a written description. - Every available setting is shown in the Studio form before launch, and the price follows them. - The result length is 5 to 15 seconds. - At most 1 photo as input. ## How to run a fair comparison - Fix the scene, the first frame (if both models accept one), the duration and the resolution. - Judge motion, not stills: faces, hands and objects should hold across the whole clip and at cuts. - If sound matters, listen to it separately: dialogue, effects and lip sync differ between models. - Price a finished clip, not a second: the per-second rate times your real duration, rounded up once. ## Sources Prices, availability and specifications come from the Mixer AI catalog. This is not an independent test: try both models on the same task before choosing. - [Prices and availability — Mixer AI catalog](https://mixerai.org/knowledge/catalog.json) ## What we compare [ Gemini Omni 1.2 Flash Video from text, frames and references, editing and extension. ](https://mixerai.org/en/knowledge/video/gemini-omni-1-2-flash/) [ HeyGen Video Creates videos with sound from a text prompt or a single source image. ](https://mixerai.org/en/knowledge/video/heygen-video/) ## FAQ Which is cheaper: Gemini Omni 1.2 Flash or HeyGen Video? The models use different settings, so a direct price comparison would be misleading: the prices of Gemini Omni 1.2 Flash and HeyGen Video are in the table, so compare for the mode you need. How does Gemini Omni 1.2 Flash differ from HeyGen Video? Gemini Omni 1.2 Flash — resolutions: 360p / 720p / 1080p / 4K; first frame: Yes; last frame: Yes. How should I compare Gemini Omni 1.2 Flash and HeyGen Video fairly? Fix the scene, first frame, duration and resolution. Watch the motion across the whole clip and listen to the sound separately. Price the finished clip, not one second. Are both models available in Mixer AI? Yes. Both models are in the Mixer AI video catalog; the launch button on the page opens Canvas on a computer and the Studio on a phone. The page exists only for models in the current catalog. Which model is better? There is no single winner. First rule out the model that lacks the duration, first or last frame, sound or resolution you need, then compare clips on your own scene. The table highlights only measurable differences. ## See also [Grok Imagine Video vs Gemini Omni 1.2 Flash: specs and price→](https://mixerai.org/en/knowledge/compare/grok-video-vs-gemini-omni-1-2-flash/) [Grok Imagine Video vs HeyGen Video: specs and price→](https://mixerai.org/en/knowledge/compare/grok-video-vs-heygen-video/) [Gemini Omni 1.0 Flash vs Gemini Omni 1.2 Flash: specs and price→](https://mixerai.org/en/knowledge/compare/gemini-omni-1-0-flash-vs-gemini-omni-1-2-flash/) [Gemini Omni 1.0 Flash vs HeyGen Video: specs and price→](https://mixerai.org/en/knowledge/compare/gemini-omni-1-0-flash-vs-heygen-video/) [Try it on Mixer AI](https://mixerai.org/en/#/canvas?dl=kb_gemini-omni-1-2-flash-vs-heygen-video)