Seedance vs MiniMax H3, Kling, Veo, Runway, and Sora (2026)

The best AI video model in a leaderboard is not automatically the best model for an episode, campaign, or API product. Production depends on access, references, audio, editing, failure rate, and whether an approved character survives the next shot.

Current snapshot on August 8, 2026: Seedance 2.5 is live in Dreamina and listed in the international BytePlus ModelArk catalog. Its API currently supports 480p or 720p, 4-to-30-second output, large multimodal reference sets, editing, extension, and audio. MiniMax H3 has a hosted 2K API. Kling 3.0, HappyHorse 1.1, and Veo 3.1 have documented production access. Runway's current flagship generation model is Gen-4.5. Sora's Web and app products have closed, and OpenAI says its video API will be discontinued on September 24, 2026.

That last change makes many 2026 comparison pages obsolete. Sora can still be relevant to an existing API migration, but it should not be selected as a new long-term dependency.

Quick Selection Guide

Seedance 2.5: shortlist it for up to 50 multimodal references, 30-second output, audio-video generation, editing, extension, and story-oriented camera direction. Verify ModelArk activation and token billing in the intended account.
MiniMax H3: test it for 2K generation, native stereo audio, first/last-frame control, explicit multimodal reference limits, editing, and a live hosted API. Treat local deployment as pending until the announced weights and license are published.
Kling 3.0: test it for multimodal generation, storyboard control, native audio, and a globally released model family.
HappyHorse 1.1: test it when you need clearly documented international text-, image-, and reference-to-video APIs.
Veo 3.1: consider it when Google Cloud procurement, quotas, first/last-frame control, and a defined Vertex AI integration are valuable.
Runway Gen-4.5: consider it when the creative toolchain and human editing experience matter as much as the base generation model.
Sora 2: plan an exit if you still depend on it; do not begin a new integration whose endpoint already has a retirement date.

Current Model Comparison

Model family	Current status	Strongest documented reason to test	Main production caveat
Seedance 2.5	Live in Dreamina and listed in international BytePlus ModelArk	Up to 50 references, 4–30 second output, synchronized audio, editing, and extension	API currently documents 480p/720p, not Dreamina's advertised 4K; token cost depends on input type
MiniMax H3	Hosted API launched July 31; open weights announced	2K output, native stereo audio, first/last frames, multimodal references, and editing	Official downloadable weights and license were not yet verified on August 1
Kling 3.0	Globally launched February 5	Unified text, image, audio, and video workflow with storyboard control	Verify which 3.0 or Omni features your plan/provider exposes
HappyHorse 1.1	Available through Alibaba Cloud Model Studio	Explicit T2V, I2V, and R2V model IDs with 3–15 second output	Editing remains documented under the 1.0 video-edit model
Veo 3.1	Documented on Vertex AI	First/last-frame generation, fixed quotas, Google Cloud operations	Standard modes use short 4-, 6-, or 8-second clips
Runway Gen-4.5	Available in Runway's product family	Motion quality, prompt adherence, and an established creative environment	Compare exact web-plan and API controls rather than the launch demo
Sora 2	Product closed; API retirement announced	Existing projects may need to export or migrate their work	Web/app unavailable and API scheduled to end September 24

The table compares buying and workflow facts, not a universal visual-quality score. Availability, feature flags, and price can differ by region and account.

Seedance 2.5: Live International API, with Product/API Differences

BytePlus now documents dreamina-seedance-2-5-260628 for ModelArk. The API supports 4-to-30-second output, up to 30 images, 10 videos, and 10 audio files, plus reference-to-video, video editing, extension, first-frame and first/last-frame workflows. Generated audio is also documented.

The API ceiling is currently 720p. Dreamina separately promotes 4K output and an 180-second beta in its creator product. Those are useful product claims, but they are not ModelArk API parameters. A buying comparison must distinguish what the web product can do from what an automated pipeline can request.

Seedance is a practical candidate for motion comics when character sheets, scene references, camera language, and dialogue need to inform the same shot. The relevant test is not whether it can make one impressive clip; it is how many clips remain usable after they are placed next to one another.

Read the Seedance 2.5 release and API status before choosing between versions.

MiniMax H3: Live 2K API and Open-Weight Ambition

MiniMax H3 accepts text, images, video, and audio in one context and generates up to 15 seconds of 2K video with native stereo sound. fal's launch endpoints document text-to-video, first/last-frame generation, and reference-to-video with up to 9 images, 3 videos, and 3 audio clips.

H3 is especially relevant for product work, typography, interface animation, motion transfer, and targeted editing. It also belongs in narrative benchmarks, but launch examples do not establish cross-shot character consistency. Test dialogue, occlusion, physical interaction, and a later matching shot.

MiniMax said the model weights would follow in the days after launch. Until the official repository, checkpoint, runtime, hardware requirements, and license are public, treat H3 as a hosted model with an open-weight plan rather than a verified local deployment.

Read the MiniMax H3 guide or compare Seedance vs MiniMax H3 with an embedded side-by-side video.

Kling 3.0: Current, Not Waiting for 4.0

Kuaishou launched Kling AI 3.0 globally in February 2026. The official release covers Video 3.0, Video 3.0 Omni, Image 3.0, and Image 3.0 Omni. It documents multimodal input and output, clips up to 15 seconds, native audio, reference workflows, editing, and multi-shot control.

Kling belongs in a current benchmark when a team needs a broadly available story-oriented model rather than a release that is limited to one domestic product. Its multiple variants also create a testing obligation: record the exact model, resolution, and mode instead of labeling every result “Kling 3.”

There is no official Kling 4.0 announcement as of this update. The Kling 4.0 release-date tracker separates confirmed 3.0 facts from speculative version pages.

HappyHorse 1.1: Clear APIs and a Noisy Search Landscape

Alibaba Cloud documents HappyHorse 1.1 for text-to-video, first-frame image-to-video, and reference-image-to-video. The current models output 3-to-15-second MP4 video at 720p or 1080p with audio. Version 1.0 remains the documented HappyHorse option for video editing.

This makes HappyHorse easier to price per output second than Seedance 2.5's token billing. It does not mean every HappyHorse-branded website is official or that model weights are available for self-hosting. Use Alibaba Cloud documentation for model IDs and commercial terms.

For benchmark context and a practical test plan, see the dedicated Seedance vs HappyHorse comparison.

Veo 3.1: Defined Google Cloud Operations

Google describes Veo 3.1 as its latest video generation line on Vertex AI. The documented standard models support text-to-video, image-to-video, prompt rewriting, and generation from first and last frames. They output 720p or 1080p video in 4-, 6-, or 8-second durations, with fixed request limits.

Veo is attractive when a company already operates on Google Cloud and values documented quotas, IAM, billing, and procurement. Its short standard durations can also be useful: a deliberately planned six-second shot is easier to review than a longer clip that tries to resolve several story beats at once.

Check whether a needed reference or extension feature is generally available or still marked preview. A model-family name does not guarantee the same capability across every endpoint.

Runway Gen-4.5: Model Plus Creative Environment

Runway positions Gen-4.5 around motion quality, prompt adherence, physical behavior, and visual fidelity. Its more durable advantage is the surrounding creative product: generation, iteration, keyframes, video transformation, and human editorial work can live closer together than in a raw task API.

That matters for studios that want artists to steer the result directly. It matters less when generation must be embedded in a custom application with provider-neutral project data. Test the exact controls available in the intended Runway plan and API; do not assume every interface feature maps to an endpoint.

Runway also publishes limitations such as object permanence and causal errors. Those are precisely the failure modes a production benchmark should include.

Sora 2: A Migration Case, Not a New Default

Sora 2 introduced synchronized dialogue and sound, stronger physical behavior, and improved multi-shot instruction following. But product selection must follow current operations, not historical launch quality.

OpenAI says the Sora Web and app experiences ended on April 26, 2026, and the API will be discontinued on September 24, 2026. If an existing project uses Sora 2, export assets, preserve prompts and settings, and benchmark a replacement before the deadline. New production work should not be designed around a retiring API.

What the Current Leaderboard Actually Says

Artificial Analysis separates text-to-video evaluation with and without audio. Its July 2026 with-audio view places Gemini Omni Flash first and Dreamina Seedance 2.0 second, followed by Wan 2.7 configurations and HappyHorse. Kling 3.0, Veo 3.1, and other models remain competitive further down the same view. The ordering changes in the no-audio view.

This is useful evidence that model quality is crowded and mode-dependent. It is not a procurement ranking:

the leaderboard configuration may not match the model or resolution in your account;
a blind five-second preference does not measure episode continuity;
API failures, latency, moderation, and retention are outside visual Elo;
a newly announced model such as Seedance 2.5 may not have a comparable entry yet;
small Elo gaps can sit inside overlapping confidence ranges.

Use the leaderboard to build a shortlist, then run your own sequence test.

Alibaba Cloud has since listed wan3.0-video, but its launch status should not be mixed with an older Wan 2.7 leaderboard result. See the Wan 3.0 verified status, API, and pricing tracker for the dated official facts and the details that remain unverified.

A Production Benchmark for Motion Comics

Create a fixed suite of 12 to 20 shots. Include dialogue, full-body action, hand-to-object contact, two-character interaction, environment reveals, vertical framing, quiet image-to-video motion, and a shot that must match an earlier scene.

For every model, record:

exact model ID, provider, region, mode, and date;
prompt, negative constraints, reference assets, duration, and resolution;
generation time and billed cost;
identity, costume, prop, and background errors;
prompt, camera, action, and audio adherence;
whether the clip survives the final edit;
human review and repair time.

Then calculate total model and review cost ÷ approved final seconds. The winner of one prompt is less important than the provider that gives the highest repeatable approval rate.

Keep the story and assets outside the model. AniKuku organizes scripts, shots, characters, scenes, storyboards, and output versions as project data, allowing an individual shot to move between providers without rebuilding the episode.

FAQ

Which is the best AI video model in 2026?

There is no single winner across visual quality, references, audio, editing, API access, cost, and region. Shortlist models using current documentation, then compare approved-output rate on the shots you publish.

Is Seedance 2.5 better than Kling 3.0?

No comparable public evidence supports a universal verdict. Both have international access paths, but their controls, billing, resolutions, and failure modes differ. Test the exact versions and modes available to your account.

Is MiniMax H3 better than Seedance?

H3 exposes hosted 2K endpoints, while Seedance 2.5 exposes a larger reference budget and edit/extend workflows at up to 720p in the current API. Neither specification proves better output. Test both on the same shots and acceptance rules.

Should HappyHorse be included with top AI video models?

Yes. Alibaba Cloud documents HappyHorse 1.1 APIs, and independent leaderboard results place the family among current competitive models. Its production suitability still needs a workflow-specific test.

Is Sora still available?

The Sora Web and app experiences are no longer available. OpenAI says the API will be discontinued on September 24, 2026.

Should I wait for Kling 4.0?

No release has been announced. Use Kling 3.0 or another current model, preserve provider-neutral project data, and benchmark the next official release when it exists.