Kling vs Veo vs Hailuo: which AI video engine should you use?
By Arsène Huot, founder of TubeTube · Published · Updated
How do Kling, Veo and Hailuo compare?
These six engines animate your scene images into motion. They differ on resolution, scene length and cost. The credits below are what TubeTube charges for the video clip of one scene, read from its pricing table on 23 September 2026.
| Engine | Resolution | Scene length | Credits per scene | Best for |
|---|---|---|---|---|
| Kling 2.6 Pro | 1080p | 5s, 10s | 34 (5s) · 68 (10s) | Sharp, balanced default for most videos |
| Kling 3 Pro and Standard | 1080p (Pro) or 720p (Standard) | 3s to 15s | 14/s at 1080p, 11/s at 720p (70 or 55 for 5s) | Stronger motion, and the longest single shots |
| Google Veo 3.1 | 720p or 1080p | 4s, 6s, 8s | 89 (Fast) · 177 (standard), 6s | Cinematic movement and camera work |
| Hailuo 2.3 | 768p | 6s, 10s | 23 (6s) · 38 (10s) | Stretching credits on longer videos |
| Seedance 2 | 720p, or 1080p on Pro | 5s, 10s | 106 (Mini) · 177 (Fast) · 211 (Pro 720p) · 528 (Pro 1080p), 5s | Fast, precise action |
| Gemini Omni Flash | 720p | 4s to 10s | 18/s (108 for 6s) | Characters who speak in dialogue mode, with ambience in the shot |
Resolutions and scene lengths are the engines' options on TubeTube. Credits cover the video clip only, at the lengths shown (about $0.011 per credit at the base rate); scene images and the rest of the pipeline are billed on top, and the live quote shows the exact total before you launch. Weighing these engines against Google's or OpenAI's own apps instead? See Veo 3 alternative and Sora 2 alternative.
What the makers themselves publish, checked on 23 September 2026: Google's Veo documentation lists Veo 3.1 clips of 4, 6 or 8 seconds with audio generated natively and, on Google's own API, 1080p in 8 second clips only (on TubeTube, Veo 3.1 Fast and standard also take 4 and 6 second scenes at 1080p). Kuaishou's Kling VIDEO 3.0 guide lists any length from 3 to 15 seconds at 720p or 1080p. MiniMax's Hailuo 2.3 announcement lists 6 or 10 second clips at 768p or 1080p; TubeTube renders Hailuo 2.3 at 768p. Whatever sound an engine generates, TubeTube keeps it only on the shots where a character speaks in dialogue mode.
Which engines speak on camera?
In TubeTube's dialogue mode, you write lines into the script and the engine renders the speech inside the clip. Only three engines do it, and not in the same languages:
| Engine | Sound in the clip |
|---|---|
| Veo 3.1 (Fast, standard) | Speech in dialogue mode (12 script languages); otherwise silent, audio added in the edit |
| Kling 3 | Speech in dialogue mode (English, Chinese, Spanish); otherwise silent, audio added in the edit |
| Gemini Omni Flash | Speech and ambience rendered in the clip in dialogue mode (English supported by Google, French verified by us); otherwise silent, audio added in the edit |
| Hailuo 2.3, Seedance 2, Kling 2.5/2.6 | Silent clip; narration or music added in the edit |
Need characters who speak on camera? See Gemini Omni Flash.
Which AI video engine is the cheapest?
Hailuo 2.3 is the lowest-cost engine at 23 credits for a 6 second scene, so it's the value pick when you're paying per scene across a long video. At 768p it trades some resolution for a much lower price, which barely matters for fast-moving or stylised content. If a 10-minute video would be expensive on a premium engine, Hailuo is how you keep it affordable. See how that maps to earnings in YouTube revenue by country.
What does a 3-minute video cost on each engine?
A worked example for the video clips alone, from the per-scene prices above. TubeTube cuts a video into one scene per clip, so a 3-minute video at each engine's default length is 36 five-second scenes or 30 six-second scenes (32 on Hailuo 2.3, whose 6-second clips run slightly short, so the quote counts 5.8 seconds each). Multiply by the credits per scene and convert at the base rate of $0.011 per credit:
| Engine | Scene length | Scenes in 3 min | Video-clip credits | ≈ USD (base rate) |
|---|---|---|---|---|
| Hailuo 2.3 | 6s | 32 | 736 | $8.10 |
| Kling 2.6 Pro | 5s | 36 | 1,224 | $13.46 |
| Kling 3 (1080p) | 5s | 36 | 2,520 | $27.72 |
| Veo 3.1 Fast | 6s | 30 | 2,670 | $29.37 |
| Gemini Omni Flash | 6s | 30 | 3,240 | $35.64 |
| Seedance 2 Mini | 5s | 36 | 3,816 | $41.98 |
| Veo 3.1 (standard) | 6s | 30 | 5,310 | $58.41 |
Arithmetic on TubeTube's pricing table of 23 September 2026, not a render test. It covers the video clips only: scene images (see the measured GPT Image 2.5 pricing), the voice or song and the edit are billed on top, and the live quote shows the exact total before you launch. Bigger plans pay less than the base rate per credit. Kling 3 and Gemini Omni Flash are billed per second, so their total mostly tracks the video's length, not the scene length. In dialogue mode the scene count follows your lines instead of a fixed length.
Which engine gives the most cinematic motion?
Kling 3 and Google Veo 3.1 produce the most dynamic, camera-driven motion, which suits hero shots and pieces where movement carries the story. Kling 2.6 Pro is the balanced default: sharp 1080p that looks great across almost any video at 34 credits for a 5 second scene. Whichever engine animates the scene, keeping the same character across shots is a separate problem, covered in keeping AI characters consistent.
Do you have to choose one engine?
No. TubeTube lets you choose the engine per video rather than locking your whole channel to one. A practical pattern: Hailuo 2.3 for long, low-RPM uploads, Kling 2.6 Pro as the everyday default, and Kling 3 or Veo 3.1 when a specific video needs premium motion. The quote updates with your choice before you launch, so you always see the trade-off. This per-video engine choice is one of the things that sets TubeTube apart in the long-form AI video tool comparison.
How do scene length and resolution affect cost?
You're billed per generated scene, so two levers move the price: the engine (its per-scene rate) and the scene length (a 10s scene costs more than a 5s one). Higher resolution often costs more too: Kling 3 is 14 credits a second at 1080p and 11 at 720p, Seedance 2 Pro 528 credits for 5 seconds at 1080p and 211 at 720p, while Veo 3.1 Fast costs the same 89 credits for 6 seconds at either resolution. A video on Hailuo 2.3 is the cheapest end; one on Seedance 2 Pro at 1080p is the most expensive, more than 20 times the Hailuo rate per scene. Most creators land in the middle with Kling 2.6 Pro. Learn the full workflow in how to make faceless YouTube videos with AI.
Methodology
Engine names, resolutions and scene lengths reflect the lineup available on TubeTube on 23 September 2026 (Kling 2.6 Pro, Kling 3, Google Veo 3.1, Hailuo 2.3, Seedance 2, Gemini Omni Flash), six model families among the 14 engine presets you can select. Credits per scene were read from TubeTube's pricing table on that date and computed the way the app bills them: a fixed rate per scene length for most engines, a rate per second for Kling 3 and Gemini Omni Flash. They cover the video clip only; the app shows the exact, itemized quote for the whole video before you launch. Which engines speak, and in which languages, comes from TubeTube's dialogue-mode settings and, for Omni Flash, Google's documentation. The makers' own specs come from Google's Veo documentation, Kuaishou's Kling VIDEO 3.0 guide and MiniMax's Hailuo 2.3 announcement, read on the same date. The 3-minute example is arithmetic on those prices and on the scene count the quote uses; we did not render a test video for it. Model versions and prices move quickly, so re-check the in-app options before committing.
Real examples: kling 2.6 pro made with TubeTube
Finished videos from the community gallery, each with its full recipe (style, engine, voice, lyrics or script) that you can remix with your own words.
Frequently asked questions
Which AI video engine is the cheapest?
Hailuo 2.3. On TubeTube a 6 second Hailuo 2.3 scene costs 23 credits, against 34 for a 5 second Kling 2.6 Pro scene (the default), 70 for Kling 3 at 5 seconds, 89 for Veo 3.1 Fast and 108 for Gemini Omni Flash at 6 seconds (pricing table, 23 September 2026, video clip only). The most expensive option is Seedance 2 Pro at 1080p, 528 credits for 5 seconds.
Which engine has the best motion and quality?
For the most dynamic, cinematic motion, Kling 3 and Google Veo 3.1 lead. Kling 2.6 Pro is the balanced 1080p default that looks great for most content. Hailuo 2.3 (768p) trades some resolution for a much lower price.
What resolution and scene length does each engine support?
Kling 2.6 Pro renders 1080p in 5s or 10s scenes. Kling 3 does 1080p or 720p at any length from 3 to 15 seconds, billed per second. Google Veo 3.1 does 720p or 1080p in 4s, 6s or 8s. Hailuo 2.3 renders 768p in 6s or 10s. Seedance 2 renders 5s or 10s at 720p, or 1080p on Pro. Gemini Omni Flash renders 720p at any length from 4 to 10 seconds, billed per second. Scene length and resolution both affect the per-scene cost.
Which of these engines can make characters speak?
Three engines can speak lines on camera in TubeTube's dialogue mode: Veo 3.1 (12 script languages), Kling 3 (English, Chinese, Spanish) and Gemini Omni Flash (English supported by Google, French verified by TubeTube). Hailuo 2.3, Seedance 2 and Kling 2.5/2.6 render silent clips. Outside dialogue mode, TubeTube removes the engines' own audio from every clip, including Veo's and Omni Flash's, and the pipeline mixes ElevenLabs narration or Suno music over them.
Do you have to choose one engine for the whole channel?
No. On TubeTube you pick the engine per video, so you can use Hailuo 2.3 to keep a long, low-RPM video cheap and switch to Kling 3 or Veo 3.1 when a piece needs premium motion. The quote updates with your choice before you launch.
Why does the engine change the price so much?
You're billed per generated scene, and each engine has its own per-scene rate: on TubeTube, from 23 credits for a 6 second Hailuo 2.3 scene to 528 for a 5 second Seedance 2 Pro scene at 1080p. Longer scenes cost more than shorter ones, so engine plus scene length together set most of a video's cost; 30 six-second scenes cost 690 credits on Hailuo 2.3 and 2,670 on Veo 3.1 Fast, before scene images.
Which engine should a beginner pick?
Start with Kling 2.6 Pro, the default: sharp 1080p at 34 credits for a 5 second scene, and it works for almost any video. Move to Hailuo 2.3 (23 credits for 6 seconds) when you need to cut cost on long videos, to Kling 3 or Veo 3.1 when motion quality matters most, and to Veo 3.1 or Gemini Omni Flash when characters must speak on camera.