AI Video Generator Comparison 2026: Google Veo 3.1 (Flow), Kling AI, Seedance 2.5 and 7 More (Pricing & Free Plans)

When choosing an AI video generation tool, many people find it difficult to decide due to the sheer number of factors involved, such as pricing structures, the availability of free plans, and the usability of the Japanese interface. In particular, because many tools offer similar features, finding the one that best fits your specific goals is not easy.

This article provides a complete comparison of 10 major tools, including Google Veo 3.1 (Flow), Kling AI, and Seedance 2.5, based on data listed on AIpedia (as of November 2026). We outline each tool's pricing, free plan availability, Japanese support, and platforms, along with its strengths and weaknesses, from a neutral standpoint.

We also give recommendations by goal for specific use cases and tips on how to choose without regrets. You can review everything from basic knowledge needed before adoption to practical comparisons in one place.

What Are AI Video Generation Tools? What They Can Do and What to Know Before Choosing

AI video generation tools are services that automatically create videos from text or image inputs. Recent models increasingly generate audio, such as sound effects and dialogue, simultaneously. Additionally, tools like Kling AI and Seedance 2.5 can produce longer videos of approximately 15 to 30 seconds in a single generation.

• Generate videos with audio from text prompts or images
• Convert existing footage into different styles or replace specific parts
• Create videos where avatars speak based on a script and translate them into multiple languages
• Automatically extract highlights from long-form videos to create short clips
• Automatically structure multiple cuts to produce multi-shot videos with consistent style

When choosing a tool, pay attention to the differences in free trial limits. Google Veo 3.1 (Flow) offers 50 credits per day, and OpusClip provides 60 credits per month for free. However, Runway's free plan includes 125 credits only on first use, and Luma AI (formerly Dream Machine) does not have a permanent free plan. Also, note that Pika's free plan does not include a commercial usage license.

Japanese support is also an important factor. Kling AI, HeyGen, and CapCut support Japanese in their UI and voice generation, while Runway and Luma AI (formerly Dream Machine) are English-only. Furthermore, availability varies by tool: some support web browsers, iOS or Android apps, and API access, while others do not. Please verify in advance whether the platform fits your business workflow.

Note that OpenAI's video generation service, Sora, ended its web and app services on April 26, 2026, and its API service on September 24, 2026. This article compares tools available as of November 2026.

Comparison of Top 10 Tools (Pricing, Japanese Support, Platforms)

Tool	AIpedia rating	Main plans	Japanese support	Platforms
Google Veo 3.1 (Flow)	4.6	Flow: Free (50 credits/day) / Google AI Plus ¥725/month (adds 200 Flow credits/month) / Pro ¥2,900/month (1,000 credits/month)	Partial support	Web, Android, API
Kling AI	4.5	Free (Basic: Free credits granted upon monthly login for non-members. Number of credits not listed on official page) / Standard $6.99 first month, then $8.80/month (660 credits/month)	Supported	Web, iOS, Android, Mac, and others
Seedance 2.5	4.2	Dreamina: Free credits available / Annual Basic ¥26,800 (first year ¥16,080), Standard ¥65,000 (first year ¥39,000), Advanced from ¥290,086 (first year from ¥145,043), Ultra ¥953,548 (first year ¥476,774)	Supported	Web, Windows, Mac, API
Runway	4.3	Free (125 credits for first time only) / Standard $15/month ($12/month billed annually, 625 credits/month) / Pro $35/month ($28/month billed annually, 2,250 credits/month)	English only	Web, iOS, Android, API
Luma AI (formerly Dream Machine)	4.2	Plus $30/month ($25/month billed annually, 10,000 credits) / Pro $90/month ($75/month billed annually, 40,000 credits) / Ultra $300/month ($250/month billed annually, 150,000 credits)	English only	Web, iOS, API
Pika	4.1	Free ($0/month, no monthly credits. Use via credit pack purchase) / Starter $10/month ($8/month billed annually, 900 credits/month) / Creator $35/month ($28/month billed annually, 3,150 credits/month)	English only	Web, iOS, API
Hailuo AI	4.3	Free (Trial credits for first time only, Hailuo model only) / Standard $10.50/month ($8.40/month billed annually, 1,000 credits/month) / Pro $38/month ($30.40/month billed annually, 4,500 credits/month)	Partial support	Web, iOS, Android, API
HeyGen	4.3	Free (3 videos/month, up to 1 minute each, with watermark) / Creator $29/month ($24/month billed annually, 600 credits) / Pro from $49/month (1,000 credits. Higher tiers up to $4,300/month, 100,000 credits)	Supported	Web, API
CapCut	4.3	Free version ¥0 / Pro ¥2,700/month (¥21,800/year, 800 AI credits/month. New users get 7-day free trial) / Ultra ¥12,600/month (¥144,800/year, 13,821 AI credits/month)	Supported	Web, Windows, Mac, iOS, and others
OpusClip	4.3	Free (60 credits/month, with watermark, export within 3 days) / Starter $15/month (monthly billing only, 150 credits/month) / Pro $29/month (300 credits/month. Annual discount available)	Partial support	Web, API

Ratings are out of 5 points by the AIpedia editorial team. Pricing and plans may change. Please check the official website of each tool for the latest information before signing up.

Features, Pricing, and Best Use Cases for 10 Tools

1. Google Veo 3.1 (Flow)

Google Veo 3.1 (Flow) is a video generation model developed by Google DeepMind. It can generate videos with audio, including sound effects and dialogue, from text or images. It is currently available through the AI production tool “Google Flow” and Google Cloud’s “Gemini Enterprise Agent Platform.”

• Strengths: A key feature is its ability to generate audio, such as sound effects and dialogue, simultaneously with video.
• Strengths: Supports 4K output and vertical (9:16) videos.
• Strengths: You can choose from three models—Standard, Fast, and Lite—based on speed and price.
• Things to note: Each generation is limited to a maximum of 8 seconds, so creating longer videos requires extension or stitching.
• Things to note: In Japan, you cannot purchase additional AI credits for Flow.
• Things to note: Video generation in the Gemini app has been replaced by Gemini Omni. Veo 3.1 is now provided via Flow and Google Cloud APIs. The Veo 3.1 preview in the Gemini API (Google AI Studio) ended on October 22, 2026.
• Things to note: Google Cloud's model information lists a retirement date of November 17, 2026 or later for the standard and Fast API models. If you use the API, check availability and the guidance on successor models.

Pricing: Flow offers a free tier of 50 credits per day. Paid plans include Google AI Plus at ¥725/month (200 additional credits/month), Pro at ¥2,900/month (1,000 credits/month), and Ultra at ¥14,500–¥32,000/month (10,000–25,000 credits/month). API usage is billed per second: Veo 3.1 with audio at 720p/1080p costs $0.40/second, 4K costs $0.60/second, Fast costs $0.10–$0.30/second, and Lite costs $0.05–$0.08/second.

Best for: Users who want automatic audio generation or prioritize high-resolution and vertical video production. It also suits engineers who want to integrate it into development environments via API, as well as individual users who want to try it for free first.

2. Kling AI

Kling AI is an AI video generation service provided by Kuaishou. It features native audio capabilities that generate video and audio simultaneously, along with functions to maintain subject consistency. You can use both Kling 4.0, officially released in October 2026, and Kling 3.0, released in February 2026, within the same service.

• Strengths: Generates multilingual dialogue, including Japanese, with audio, and supports lip-sync.
• Strengths: The web app UI can be switched to Japanese. It is also available via smartphone and desktop apps, as well as an API.
• Strengths: Kling 4.0 supports up to 30 seconds per generation and output resolutions from 720p to 4K.
• Things to note: Pricing is credit-based, and consumption varies depending on resolution and whether audio is included.
• Things to note: Removing watermarks, commercial use, and generating 1080p/4K are benefits exclusive to paid members.

Pricing: Free (Basic: Non-members receive free credits upon monthly login. The number of credits is not listed on the official page) / Standard $6.99 for the first month, then $8.80/month (660 credits/month) / Pro $25.99 for the first month, then $32.56/month (3,000 credits/month) / Premier $64.99 for the first month, then $80.96/month (8,000 credits/month) and up / Ultra+ $432.99 for the first month, then $544.99/month (57,000 credits/month) / Annual billing discounts available (e.g., Standard $79.20/year)

Best for: Individuals who want to create videos with Japanese dialogue, and those who want flexible use via web, app, or API. However, note the monthly fee after the first-month discount and the credit expiration period (31 days). Please check the official website for the latest pricing and features.

3. Seedance 2.5

Seedance 2.5 is a video generation model developed by ByteDance Seed, the research organization of ByteDance. It can generate video and audio simultaneously, creating videos up to 30 seconds long in a single generation. Each video can be extended up to two more times.

• Strengths: Generates videos with audio from text. It creates ambient sounds, sound effects, and human voices simultaneously, reducing post-processing effort.
• Strengths: Available in Japanese with yen-based pricing via Dreamina or CapCut. It can also be selected as a model from other services like Runway or Pika.
• Strengths: Allows combining up to 50 assets, including images, videos, and audio. It also features the ability to read the composition and camera work of reference videos.
• Things to note: Pricing structures and limits vary by access point. Dreamina’s annual plans offer significant first-year discounts, but renewal prices increase from the second year onward.
• Things to note: Resolution specifications vary by access point; the API supports 480p/720p, while Dreamina advertises 4K output. Check before use.

Pricing: Dreamina offers free credits and annual plans such as Basic ¥26,800 (¥16,080 for the first year). CapCut Pro costs ¥2,700/month and includes 800 AI credits per month. The API uses token-based pricing, starting with Light at $32 (5 million tokens, valid for 3 months).

Best for: Individual users who want to easily create videos with audio in a Japanese environment, and those who want to leverage AI generation within existing editing tools. Developers can also use it via the API.

View detailed features, pricing, and FAQ for Seedance 2.5

4. Runway

Runway is a cloud-based AI video production platform provided by Runway, a US company. It allows generating and editing video, images, and audio in a single workspace. It features its own video generation model Gen-4.5 and Aleph 2.0 for editing existing footage.

• Strengths: One subscription lets you switch between proprietary models and third-party models like Kling 4.0.
• Strengths: Plugins for Adobe Premiere Pro and DaVinci Resolve make it easy to integrate into existing editing workflows.
• Things to note: Using Gen-4.5 requires a paid plan of Standard or higher. The free plan only grants 125 credits on the first use.
• Things to note: Gen-4.5 output resolution is 720p, and each generation is limited to a maximum of 10 seconds.

Pricing: Free (125 credits for the first time only) / Standard $15/month ($12/month billed annually, 625 credits/month) / Pro $35/month ($28/month billed annually, 2,250 credits/month) / Max $95/month ($76/month billed annually, 9,500 credits/month, 1-month rollover allowed) / Team $69/seat/month ($55/seat/month billed annually, 6,900 credits/seat/month) / Enterprise (contact sales)

Best for: Users who want to create content while comparing multiple AI models, or those who want to integrate with existing editing software. It is also worth considering if you need credit sharing within a team or exporting in production-oriented formats.

View detailed features, pricing, and FAQ for Runway

5. Luma AI (formerly Dream Machine)

Luma AI (formerly Dream Machine) is an AI video and image creation service provided by Luma AI in the US. You can use its proprietary video model Ray3.2 or third-party models together in the AI agent-based environment “Luma Agents.” It generates 5-second or 10-second videos from text or images and supports HDR and EXR export.

• Strengths: Supports HDR generation and 16-bit EXR export for post-production.
• Strengths: Allows switching between its proprietary model and third-party video models like Kling 4.0 using the same credits.
• Things to note: There is no permanent free plan; the lowest price is $30/month ($25/month billed annually).
• Things to note: There are no official mentions of Japanese UI or prompt support; the official website is in English only.

Pricing: Plus $30/month ($25/month billed annually, 10,000 credits) / Pro $90/month ($75/month billed annually, 40,000 credits) / Ultra $300/month ($250/month billed annually, 150,000 credits) / Team & Enterprise (contact sales). There is no permanent free plan; according to Luma, all plans include free trial credits.

Best for: Video production that needs high resolution or HDR output, and users who want to create content while comparing multiple AI models. It is available on the web, on iOS, and via API.

View detailed features, pricing, and FAQ for Luma AI (formerly Dream Machine)

6. Pika

Pika is an AI creation service that generates videos from text or images. In addition to its proprietary models Pika 2.5 and Pika H3 Flex, third-party models can be used on a credit basis. It supports Web, iOS apps, and API.

• Strengths: Exports without watermarks even on the free plan.
• Strengths: Allows switching between proprietary and third-party models within the same credits.
• Strengths: Pika H3 Flex supports finishing at up to 4K resolution.
• Things to note: The free plan has no monthly credits; purchasing credit packs is required.
• Things to note: There are no official mentions of Japanese UI or Japanese prompt support.
• Things to note: The free plan does not include a commercial use license.

Pricing: Free ($0/month, no monthly credits), Starter ($10/month, 900 credits/month), Creator ($35/month, 3,150 credits/month), Fancy ($95–$880/month, 8,550+ credits/month), Enterprise (contact sales). Annual billing offers a 20% discount.

Best for: Users who want to try watermark-free videos at low cost, or those who want to compare and evaluate proprietary and third-party models. However, since Japanese language support cannot be confirmed, it is suitable for users who can operate in English.

View detailed features, pricing, and FAQ for Pika

7. Hailuo AI

Hailuo AI is a video and image generation service provided by Chinese AI company MiniMax. With the new model MiniMax H3, announced on July 31, 2026, it can generate videos up to 15 seconds long in up to 2K resolution with stereo audio. It also allows combining up to 12 reference assets, such as text or images, to create content.

• Strengths: Generates videos with audio in a single pass, and offers six aspect ratio options.
• Strengths: The official website supports Japanese display, and iOS and Android apps are available.
• Things to note: The free tier only includes initial trial credits; there is no monthly credit allocation.
• Things to note: Generating in 2K consumes a large amount of credits. On the Standard plan, this is roughly equivalent to 84 seconds of video.

Pricing: Free (initial trial credits only; Hailuo model only) / Standard $10.50/month ($8.40/month billed annually; 1,000 credits/month) / Pro $38/month ($30.40/month billed annually; 4,500 credits/month) / Master $89/month ($71.20/month billed annually; 10,500 credits/month) / Max $216/month ($184/month billed annually; 27,000 credits/month)

Best for: Users who want to generate videos with audio on a site with Japanese support, or those who prefer using smartphone apps. However, if you expect continuous free usage, you will need to consider paid plans.

View detailed features, pricing, and FAQ for Hailuo AI

8. HeyGen

HeyGen is a service that creates videos featuring speaking AI avatars. By entering a script, it generates videos where either pre-made avatars or custom avatars replicating your appearance and voice speak the text. It is used in scenarios such as training, marketing, and sales.

• Strengths: Supports Japanese voice generation and video translation with lip-sync. The official website also has a Japanese version.
• Strengths: The free plan allows up to 3 videos per month for testing. On the Creator plan or higher, you can create videos up to 30 minutes long. Unused credits can be carried over for one month even on monthly billing.
• Things to note: The free plan includes watermarks and limits each video to 1 minute. Exporting in 4K or using third-party models like Seedance 2.5 requires the Pro plan or higher. Pricing is in US dollars.

Pricing: Free (3 videos/month; up to 1 minute each; watermarked) / Creator $29/month ($24/month billed annually; 600 credits) / Pro from $49/month (1,000 credits. Higher tiers go up to $4,300/month for 100,000 credits) / Business $149/month + $20/seat/month / Enterprise (contact sales)

Best for: Users looking to produce avatar videos in Japanese or translate existing videos into multiple languages. It is also suitable for business professionals who want to easily generate videos via web environments or APIs.

View detailed features, pricing, and FAQ for HeyGen

9. CapCut

CapCut is a video editing app provided by ByteDance. In addition to basic editing functions, it features AI capabilities such as AI video generation using Seedance 2.5 and automatic captions. It is available on smartphones, computers, and web browsers, with Japanese support and pricing plans in Japanese yen.

• Strengths: You can complete the entire process from AI video generation to editing and subtitling within the same app.
• Strengths: Supports a wide range of platforms including Web, Windows, Mac, iOS, and Android. Basic editing features are free to use.
• Things to note: Monthly AI credits are only allocated with paid plans. There are limits on the number of seconds generated and resolution depending on the plan.

Pricing: Free ¥0 / Pro ¥2,700/month (annual ¥21,800, 800 AI credits per month. New users get a 7-day free trial) / Ultra ¥12,600/month (annual ¥144,800, 13,821 AI credits per month) / Teams ¥1,295/seat/month (annual ¥11,900/seat)

Best for: Individuals who want to easily handle AI video generation and editing in one tool within a Japanese environment. You can try the features on the free plan before choosing a paid plan that fits how often you use it.

View detailed features, pricing, and FAQ for CapCut

10. OpusClip

OpusClip is an AI tool that automatically creates short clips for social media from long videos such as podcasts or webinars. The AI identifies highlights, extracts them, and formats them into vertical videos with subtitles. OpusClip 4.0, released on November 2, 2026, added automatic editing features that remove retakes and add B-roll.

• Strengths: A clear pricing structure of 1 credit per minute of source video. Unused credits roll over on the Pro plan.
• Strengths: You can post and schedule content for YouTube Shorts, TikTok, and other platforms using a single tool. It also supports exporting to Adobe Premiere Pro and DaVinci Resolve.
• Things to note: Japanese processing is in beta, and emoji or keyword highlighting may be inaccurate. Subtitles can currently be translated only into English.

Pricing: Free (60 credits/month, watermark included, export within 3 days) / Starter $15/month (monthly billing only, 150 credits/month) / Pro $29/month (300 credits/month. Annual discount available) / Business (contact sales). 1 credit = 1 minute of source video processed.

Best for: Individuals and businesses who want to efficiently repurpose existing long-form video assets for social media posts. However, the free plan includes a watermark and limits editing features, so a paid plan is required for serious use.

Recommendations by Goal

Goal	Recommendation	Reason
Try it for free first	Google Veo 3.1 (Flow)	If you have a Google account, you can try generating videos with audio using the free tier of 50 credits per day (generation may not be possible during peak times).
Use a Japanese UI or pay in JPY	Kling AI, CapCut	You can switch the web app UI of Kling AI to Japanese (pricing is in USD). CapCut displays in Japanese and allows contracts in JPY.
Create longer videos in a single generation	Seedance 2.5, Kling AI	Seedance 2.5 and Kling 4.0 can create videos up to 30 seconds long in a single generation.
Create presentation videos with avatars	HeyGen	You can create videos where Japanese-speaking avatars read from a script, as well as translated videos with lip-sync.
Integrate with existing editing software	Runway	Plugins are available for use with existing editing software such as Premiere Pro and DaVinci Resolve.
Automatically generate short social media videos from long-form content	OpusClip	It automatically extracts highlights from long videos and turns them into vertical short videos with subtitles.
Use via API as a developer	Google Veo 3.1 (Flow), Seedance 2.5	Veo 3.1 uses per-second usage-based billing via the Google Cloud API (Google lists a retirement date of November 17, 2026 or later for the standard and Fast models). Seedance 2.5 uses the BytePlus API with token-based pricing.

These picks are based on the data above. Specific features and pricing vary by tool, so please check the official website for the latest information before adoption.

How to Choose Without Regrets

Clarify video length and use cases

The maximum video length per generation varies by tool. Google Veo 3.1 (Flow) supports up to 8 seconds, Kling AI supports up to 15 seconds with Kling 3.0 and up to 30 seconds with Kling 4.0, and Seedance 2.5 supports up to 30 seconds. If you are creating short videos for social media, tools like Pika or Hailuo AI, which primarily support lengths up to 15 seconds, are also viable options.

Check free tiers and ongoing costs

The ease of trying out a tool varies significantly. You can try Google Veo 3.1 (Flow) for free with 50 credits per day, HeyGen with 3 videos per month, and OpusClip with up to 60 credits per month. However, Luma AI (formerly Dream Machine) does not have a permanent free plan. Also, if a tool offers first-month or first-year discounts, such as Kling AI or Seedance 2.5, be aware that prices may increase upon renewal.

Check Japanese support and pricing currency

Verify whether the tool supports operation in Japanese and Japanese voice generation. CapCut offers a Japanese interface and pricing in Japanese yen. HeyGen has a Japanese version on its official website, but pricing is in US dollars. In contrast, Runway and Pika do not have official documentation stating they support Japanese. Kling AI and Hailuo AI offer a Japanese UI, but pricing is in US dollars. If you are creating videos with Japanese dialogue, it is safer to choose tools that support Japanese voice generation, such as Kling AI or HeyGen.

Available platforms and integration with existing workflows

It is important to know which platforms the tool supports, including web browsers, iOS, Android, Windows, and Mac. CapCut works on Web, Windows, Mac, iOS, and Android, while Luma AI (formerly Dream Machine) is available only on Web, iOS, and via API. Additionally, Runway offers plugins that integrate with editing software like Premiere Pro. If you want to incorporate the tool into your existing production workflow, it is worth checking for compatibility.

Commercial usage licenses and output quality requirements

If you plan to use the tool for business, confirm whether commercial use is permitted under the free plan. Pika’s free plan does not include a commercial usage license. Also, while Luma AI (formerly Dream Machine) allows commercial use from its lowest-priced plan, generating videos in 1080p or HDR consumes more credits. For final decisions, please check the details on the official website according to your specific usage needs.

FAQ

Q. Which tools can be tried for free?

Google Veo 3.1 (Flow) offers 50 credits per day, HeyGen allows up to 3 videos of 1 minute each per month, and OpusClip provides 60 credits per month on its free tier. Additionally, CapCut’s basic editing features are available for free. Kling AI also grants free credits monthly upon login (the specific amount is not listed on the official page). In contrast, Pika and Hailuo AI do not offer monthly free credits; using them continuously requires purchasing credits or subscribing to a paid plan.

Q. Are there tools that support Japanese voice generation or UI display?

Kling AI supports a Japanese UI in its web app and can generate audio containing Japanese speech. HeyGen also supports Japanese voice generation and lip-synced translation, with a Japanese version available on its official website. CapCut supports Japanese display and pricing in yen, and Seedance 2.5 can also be displayed in Japanese via Dreamina or CapCut.

Q. How long a video can each tool generate in a single run?

Seedance 2.5 and Kling 4.0 can generate videos up to 30 seconds long in one run, while Kling 3.0 and Hailuo AI (MiniMax H3) can generate videos up to 15 seconds long. In contrast, Google Veo 3.1 (Flow) generates 4–8 second clips, and Runway’s Gen-4.5 generates 2–10 second clips. If you need longer videos, you may need to use extension features or stitch clips together depending on the tool.

Q. Which plans allow commercial use?

Luma AI includes commercial use starting from its lowest-priced Plus plan. In contrast, Pika’s free plan does not include a commercial usage license. For Kling AI, watermark removal and commercial use are benefits reserved for paid members. Since specific terms vary by tool, please check the official website for the latest pricing and features.

Q. Can I use multiple AI models with one subscription?

With Runway, Luma AI, and Pika, you can switch between in-house models and third-party video models using the same credits. For example, Runway allows the use of Kling 4.0 and Seedance models. HeyGen also supports Seedance 2.5 and Veo 3.1 on Pro plans and above. You can choose models based on your needs, but credit consumption varies by model.

Summary

This article compared 10 AI video generation tools, including Google Veo 3.1 (Flow) and Kling AI. Each tool has clear differences in maximum video length, audio support, availability of a Japanese UI, and pricing structure. For example, Seedance 2.5 supports generation up to 30 seconds, while HeyGen specializes in avatar videos and translation.

However, free plan features, commercial usage terms, and credit consumption rates vary by tool. Note that some tools lack a Japanese UI or offer Japanese language processing only in beta. Before adopting a tool, we recommend checking the latest specifications on the official website to match your production goals and budget.

• Generating videos with audio: Kling AI (supports audio generation including Japanese dialogue)
• Integrated editing and generation: CapCut (use editing features and AI generation in the same app)
• Extracting clips from long-form videos: OpusClip (automatically extracts highlights to create short videos)

View all AI video generation tools (21 items)