Both of these run on HiAPI, so the real question isn't which vendor to sign with, it's which model to call for a given shot. The short version: MiniMax H3 is the cheaper, more flexible workhorse, fixed at native 2K but flat at about $0.12 per second, happy to run up to 15 seconds in one take, and able to frame almost any way you want. Veo 3.1 is the premium pick, generating native synchronized audio and optional 4K with Google's cinematic motion, but it caps clips at 8 seconds and costs several times more per second at the flagship tier.
You're probably weighing these two if you're deciding between:
- A longer continuous clip (10–15 seconds) versus a short hero shot that has to look flawless
- A video that needs sound baked in versus one you'll score or narrate in post
- A tight per-second budget for lots of clips versus a few premium renders
MiniMax H3 vs Veo 3.1 at a Glance
| Dimension | MiniMax H3 | Veo 3.1 |
|---|---|---|
| Vendor | MiniMax (Hailuo) | |
| Price per second | $0.1189/s flat (native 2K) | $0.57/s HD with audio, $0.29/s HD without audio, $0.86/s at 4K with audio |
| Clip length | 4–15 seconds, any whole second | 4, 6, or 8 seconds only |
| Resolution | Native 2K only | 720p, 1080p, or 4K |
| Native audio | No — audio is a reference input, not a generated track | Yes, synchronized, from the prompt |
| Aspect ratios | 21:9, 16:9, 4:3, 1:1, 3:4, 9:16, adaptive | 16:9 or 9:16 |
| Prompt controls | Watermark toggle, first/last-frame, image/video/audio references | negative_prompt, seed for reproducibility |
Prices are current as of October 2026 and can change, so confirm the live numbers before you budget a shoot.
Pricing: Where the Per-Second Math Lands
Every figure here comes straight from HiAPI's live pricing page, and the two models bill differently enough that you can't read one rate card off the other.
MiniMax H3 is the simpler one: a single flat rate of $0.1189 per second, regardless of settings, because it only outputs native 2K. There are no resolution or audio tiers to reason about. Multiply by duration and you have your cost.
Veo 3.1 charges by what you ask for. At its flagship tier, 720p and 1080p bill at the same HD rate of $0.57/s with audio, drop to $0.29/s if you turn audio off, and jump to $0.86/s at 4K with audio. Veo also ships two cheaper tiers on HiAPI — Veo 3.1 Fast ($0.25/s HD with audio) and Veo 3.1 Lite (from $0.06/s at 720p without audio up to $0.14/s at 1080p with audio) — which is the honest way to close the price gap when you don't need flagship fidelity.
Here's what common clips actually cost. Veo caps a single generation at 8 seconds, so a 10- or 15-second clip isn't one Veo request — that gap is itself a reason to pick:
| Clip length | MiniMax H3 (2K) | Veo 3.1 HD + audio | Veo 3.1 HD no audio | Veo 3.1 Fast (HD + audio) |
|---|---|---|---|---|
| 6s | $0.71 | $3.42 | $1.74 | $1.50 |
| 8s | $0.95 | $4.56 | $2.32 | $2.00 |
| 10s | $1.19 | not a single clip (8s max) | — | — |
| 15s | $1.78 | not a single clip (8s max) | — | — |
Read that column by column. On raw per-second cost, H3 undercuts the Veo 3.1 flagship by roughly 5x and even comes in below Veo 3.1 Fast, while rendering at 2K — higher than Veo's 720p/1080p HD tier. The only Veo tier that matches H3 on price is Lite, and Lite tops out at 1080p. So if 2K-or-below quiet footage is the brief, H3 is hard to beat on budget.
Clip Length and Continuity
This is the biggest structural split. MiniMax H3 generates any whole-second length from 4 to 15 seconds in one continuous take, which matters whenever a cut would hurt: a product pan across a full assembly, a slow reveal, a 12-second social slot that has to fill without stitching. Veo 3.1 only generates fixed 4-, 6-, or 8-second clips. That's plenty for a hero shot or a cutaway, but anything longer means generating several clips and editing them together, which adds both cost and continuity risk — lighting, motion, and framing can drift between separate renders.
Resolution and Audio
These two dimensions are where the models trade wins, and it's worth being precise.
Resolution. Veo 3.1 has the higher ceiling with native 4K; H3 can't reach it. But H3's fixed 2K sits above Veo's 720p/1080p HD tier, so for anything short of a true 4K deliverable, H3 is actually the sharper default at a fraction of the price. If the clip is going on a cinema screen or needs heavy cropping in post, Veo's 4K is the call.
Audio. This is Veo's clearest edge. Veo 3.1 generates a native, synchronized soundtrack from your prompt — ambience, effects, even dialogue — with generate_audio on by default, so a clip ships with sound and no separate audio pass. MiniMax H3 does not generate a soundtrack at all. Its audio field is a reference input used in reference-to-video mode (it can't even be sent on its own, it needs a reference image or video alongside it). With a plain text prompt, H3 returns silent video. If sound is part of the deliverable and you don't want a post step, that alone can decide it for Veo.
Prompt Controls and Modes
MiniMax H3 is one model ID that covers three modes: plain text-to-video, first/last-frame control (set both boundary frames and let it interpolate the motion), and multimodal reference-to-video that accepts up to five reference images, up to three reference video clips, and up to three audio clips to drive consistency and rhythm. It also exposes a watermark toggle and seven aspect ratios, including 21:9 ultrawide, square, vertical, and an adaptive option.
Veo 3.1 keeps the text-to-video surface tighter — 16:9 or 9:16 only — but adds two controls H3 doesn't: a negative_prompt to steer away from unwanted content, and a seed for reproducible results, which is genuinely useful when you're iterating on a locked composition.
See Them in Action
MiniMax H3
HiAPI's official MiniMax H3 showcase: a continuous 2K cinematic reveal, no cuts.
Veo 3.1
HiAPI's official Veo 3.1 showcase: a short hero shot with synchronized ambient audio.
When to Choose Each
Choose MiniMax H3 when:
- Per-second budget matters and 2K is enough — it's several times cheaper than Veo's flagship
- Your shot needs to run longer than 8 seconds in one continuous take (up to 15s)
- You need framing beyond 16:9/9:16 — ultrawide, square, 4:3, or adaptive
- You want first/last-frame control or reference-driven consistency from images, video, or audio
- Sound can be added in post, or the clip is meant to be silent
Choose Veo 3.1 when:
- You need a native, synchronized soundtrack generated with the video
- The deliverable has to hold up at true 4K
- You want Google's cinematic motion and rendering for a short hero shot (≤8s)
- Reproducibility (
seed) or negative prompting is part of your workflow - You can trade down to Veo 3.1 Fast or Lite when flagship fidelity isn't required
FAQ
Is MiniMax H3 cheaper than Veo 3.1?
At the flagship tier, by a wide margin: $0.1189/s flat versus $0.57/s HD with audio, roughly a 5x difference, and H3 renders at 2K while that Veo tier is 720p/1080p. The gap narrows only against Veo 3.1 Lite, which starts at $0.06/s but caps at 1080p. Check the live pricing page before you commit, since rates change.
Which model supports longer clips?
MiniMax H3. It generates any length from 4 to 15 seconds in a single continuous take. Veo 3.1 is limited to fixed 4-, 6-, or 8-second clips, so longer sequences require stitching multiple generations.
Does MiniMax H3 generate audio like Veo 3.1?
No. Veo 3.1 produces a synchronized native soundtrack from your prompt. MiniMax H3's audio field is a reference input for reference-to-video mode, not a generated track — a plain text-to-video request returns silent video. Plan a separate audio pass if you use H3 and need sound.
Can MiniMax H3 output 4K?
No. H3 is native 2K only. Veo 3.1 is the one with a 4K option, at a higher per-second rate. For anything up to 2K, though, H3's fixed 2K already beats Veo's 720p/1080p HD tier.
Can I use both models with the same API?
Yes. MiniMax H3 and the full Veo 3.1 family are available through a single HiAPI key, so you can route each shot to the model that fits and test both on the same prompt without separate vendor accounts.
Takeaways
- Pick MiniMax H3 for budget-sensitive work, clips longer than 8 seconds, non-16:9 framing, or reference-driven generation — it's flat ~$0.12/s at native 2K.
- Pick Veo 3.1 when you need generated synchronized audio, true 4K, or Google's cinematic look on a short shot, and use its Fast and Lite tiers to manage cost.
- They don't tier on the same axes: H3 is 2K-only and flat-priced; Veo prices by resolution and audio and tops out at 8-second clips.
- Both run on one HiAPI key, so the fastest way to decide is to run the same prompt through each.
MiniMax H3 and Veo 3.1 aren't really fighting for the same shot. One is built for length, flexibility, and cost; the other for audio and peak fidelity in a short window. The quickest way to settle it for your brief is to try both. Sign up for free credit and run the same prompt through MiniMax H3 and Veo 3.1 with one HiAPI key.
