Best for Social Media:
Gemini Omni Flash 1.1
Why
Gemini Omni Flash 1.1 for social media
For general social posting, Gemini Omni Flash 1.1 is the pick because this format is decided by how many attempts you can afford, not by how good a single generation is. It leads blind voting on both text-to-video arenas while costing roughly a quarter of the premium tier, which means you can discard four generations out of five and still come in cheap. Three to ten seconds covers every clip the format needs, and 9:16 is a native output rather than a crop.
How it behaves in practice
Expect the first usable result within two or three attempts on a clearly described shot. The physics grounding shows up as motion that holds together through a gesture, which is what stops a two-second clip reading as uncanny before the viewer scrolls past. Turnaround is fast enough to iterate inside a single working session.
Where it falls short
Ten seconds is a hard ceiling and the only aspect ratios are 16:9 and 9:16. If a platform wants 4:5, or a concept needs a longer unbroken beat, this model cannot do it and you move to Seedance 2.0.
Notes on the alternatives
MiniMax H3 costs less again and is the better choice when volume matters more than motion quality. Seedance 2.5 is the wrong shape entirely here: you pay nearly four times per second for a thirty-second capability the format never uses.