CutFast vs Bilibili HAI: Deep Comparison (2026) — Where AI Video Generation Ends and AI Video Editing Begins
CutFast vs Bilibili HAI: Deep Comparison (2026) — Where AI Video Generation Ends and AI Video Editing Begins
In May 2026, Bilibili confirmed its internal codename “Codename H / HAI” — an AI video podcast tool — has entered its summer release phase. Text or audio input, auto-generated video, 6 minutes to produce a video from a 1,000-word script (with plans to further compress to 3 minutes). The announcement triggered a week-long discussion in the Bilibili creator community — “you can ship a video just by writing a script now” and “the bar for UP creators is being knocked down.”
The same week, X and Xiaohongshu posts started lumping HAI and CutFast into the same “2026 AI video tools” lists. From a product-category lens, both wear the “AI video” tag; but from a problem-solving lens, they’re doing two completely different things — HAI is “creating video from nothing,” CutFast is “extracting value from existing video.”
That category confusion — putting a “paintbrush” and a “pair of scissors” in the same comparison table — reflects a broader problem in the 2026 AI video space: users don’t know what tool they’re holding, let alone when to use which. This guide compares the two across input, output, scenarios, and ROI, and ends with a framework for “when to use HAI, when to use CutFast, when to use both.”
TL;DR: Core Differences at a Glance
| Dimension | Bilibili HAI | CutFast |
|---|---|---|
| Core positioning | AI video generation (text/audio → video frames) | AI video editing (existing video → short clips) |
| Input | 1,000-word text script OR audio file | Existing video file (10 min to hours) |
| Output | Newly generated video (frames + captions + voice-over) | Short clips extracted from the source video (captions + multi-ratio fit) |
| Frame source | AI-generated (per Q2 2026 disclosures: media library + partial AI image generation) | 100% sourced from the original video (real people, real settings) |
| Typical processing time | 6 minutes per video (per HAI public data) | 20-30 minutes per video (per CutFast user testing) |
| Typical users | Creators without shooting capability, marketing batch accounts, knowledge explainer UPs | Podcasters with existing content, teachers, enterprises, long-video UPs |
| Distribution | Currently limited to Bilibili ecosystem | Full multi-platform (YouTube/TikTok/Reels/Bilibili) |
Practical rule: HAI solves “I don’t have video but want to publish video.” CutFast solves “I have long video and need to turn it into short video.” Different inputs, different outputs, different user scenarios — they’re not the same market.
Input Dimension: Script/Audio vs Existing Video
To see the distinction between these two tools clearly, start with “what’s the input?” This is the first ruler for classifying any AI video tool.
Bilibili HAI’s Input
Per Bilibili’s public disclosures, HAI accepts two input types:
- Text script: Chinese text up to 1,000 words. AI parses the script content and auto-matches video footage + voice-over + captions
- Audio file: Upload an audio file. AI transcribes it to text, then runs the text path to generate video
Either way, HAI’s defining trait is “no video source, pure text/audio start.” That means it targets the “I have ideas but no shooting capability” creator — substituting scripting skill for shooting skill.
CutFast’s Input
CutFast accepts existing video files or URLs:
- Long video files (mp4 / mov / any common format)
- YouTube / Bilibili / Twitch video links
- Screen recordings / Zoom meeting recordings / live-stream replays
- Podcast audio files (CutFast auto-pairs them with host avatar / subtitle frames)
CutFast’s core assumption is “you’ve already recorded video or audio” — the existing material just needs to be edited into publishable form. That means it targets the “I have content but no time to edit” creator — substituting editing speed for editing hours.
Input Determines the Value Proposition
The input difference completely shapes the value each tool offers:
- HAI: turns people who “have no video” into people who “can publish video”
- CutFast: turns people who have “1-hour video” into people who can publish “8-10 short-form videos”
These two user populations don’t overlap in the creator community — the first is marketers, knowledge explainer writers, personal-brand starters; the second is podcasters, education bloggers, enterprise content teams, industry interviewers.
Output Dimension: Generated Frames vs Extracted Frames
HAI’s Output
HAI generates frames from two sources (per Q2 2026 public information):
- Library matching: HAI has a built-in media library and matches frames to script keywords (Bilibili UP-creator licensed media + general assets)
- AI image/video generation: Some frames use AI generation (specific model not disclosed)
Output trait: the frames have nothing to do with you personally — viewers see AI-spliced/generated visuals paired with your written content. This is the “article-illustrated-as-video” paradigm.
CutFast’s Output
CutFast’s output frames are 100% sourced from the original video itself — no generated content, just “extracting the most valuable segments from the source material.”
Output trait: the frames are literally you or what you recorded — viewers see real people and real settings, just compressed, captioned, and ratio-adapted. This is the “real-footage precision-distillation” paradigm.
These Two Outputs Live in Completely Different Mental Categories for Viewers
When viewers watch AI-generated video, their mental judgment is “this is article-illustration footage — the message is the content.” When viewers watch CutFast clips, their mental judgment is “this is real footage — the message is what this person actually said.”
Practical rule: To convey “what this person thinks,” use CutFast. To convey “explainer-style facts about a topic,” use HAI.
Scenario Dimension: When to Use HAI, When to Use CutFast
Four Scenarios Where You Should Use HAI
Scenario 1: Knowledge explainer accounts (no personal IP).
“Special relativity in 5 minutes,” “the history of Xiaomi,” “the three schools of Chinese philosophy” — these accounts’ core value is the knowledge itself, not the speaker’s personal charisma. HAI’s “text + library” paradigm fits this kind of account perfectly for batch production.
Scenario 2: Marketing batch accounts (no brand personality).
E-commerce affiliate accounts, 3C-review re-publishers, industry news accounts — these need “daily updates + cross-topic” output. HAI’s batch scripting capability is the core advantage.
Scenario 3: Account-bootstrap phase (no shooting budget).
People just starting accounts have no team, no camera, no editor — HAI compresses the “ship a video” bar down to “can write text.” Use HAI to ship 50 test videos, see which themes resonate, then decide whether to invest in real shooting.
Scenario 4: Knowledge-product courses (explainer-focused).
Take a book’s 10 core concepts, ship each as a 3-minute HAI-generated video — course pre-launch and lead-generation cost gets compressed to near zero.
Four Scenarios Where You Should Use CutFast
Scenario 1: Podcasters (with massive audio inventory).
A weekly 60-minute podcast → 8-10 one-minute clips distributed to TikTok / Xiaohongshu / YouTube Shorts. A podcaster’s core asset is audio + personal expression. CutFast monetizes that asset across 5 platforms.
Scenario 2: Teachers and knowledge bloggers (with lecture recordings).
A 90-minute class → 12-15 quotable clips for WeChat, newsletter, social referral. A teacher’s core asset is their explanation craft, which AI can’t replace.
Scenario 3: Enterprise content teams (with customer interviews/product demos).
PMs’ customer interview recordings, sales’ product-demo screen recordings, CEOs’ internal talks — these used to “go to a hard drive after recording.” CutFast turns them into publishable quote clips / product stories.
Scenario 4: Live commerce replays (with hours of long-form recordings).
3-hour live commerce → 20-30 highlight clips for secondary distribution. This is CutFast’s core scenario in live-commerce communities.
ROI Dimension: Cost Structure and Production Ceiling
HAI’s ROI Structure (per Q2 2026 public info)
HAI’s pricing model isn’t fully public yet, but per Bilibili’s product-positioning disclosures:
- Core cost: scripting time (30-60 min for a 1,000-word script) + AI production time (6 min) + Bilibili platform fees
- Production ceiling: fast writer 5-8 videos/day; slow writer 2-3 videos/day
- Quality ceiling: AI-spliced frames + AI voice-over — lacks personal charisma. Ceiling is “watchable” but not “memorable as you”
CutFast’s ROI Structure
CutFast’s cost structure is “amortized across existing material”:
- Core cost: shooting cost of existing video (already paid) + CutFast processing time (20-30 min per output) + CutFast subscription fee
- Production ceiling: 1 × 60-min video → 8-12 short clips (one-shot output)
- Quality ceiling: depends on source quality. Good source → good clips; bad source → clips can’t save it
ROI Differences Between Paradigms
HAI’s ROI formula: unit output revenue minus unit scripting time — the faster you can write, the higher the ROI. CutFast’s ROI formula: secondary-utilization rate of existing video value — the more valuable the source (e.g., recorded interview with a well-known guest), the higher the clip ROI.
Practical rule: HAI is “leverage on writing capability.” CutFast is “secondary development of shooting assets.” Two non-conflicting ROI paths — run them in parallel.
Complementarity: When You Should Use Both
A lot of people frame this as either/or. For content creators, the best strategy is to use both.
Complementary Strategy 1: HAI for Traffic, CutFast for Conversion
- HAI batch-produces explainer videos for traffic (5+ daily)
- CutFast extracts essence clips from existing deep long-form videos / interviews to build brand
Explainer videos attract followers; deep clips make those followers form the “this UP actually gets it” perception.
Complementary Strategy 2: HAI for Warm-Up, CutFast for the Main Cut
When releasing a new long-form video:
- 1 week before: HAI generates 3-5 “what this video will cover” warm-up shorts
- Main release: the long-form video
- Within 3 days of main release: CutFast extracts 5-8 clips from the long-form for secondary distribution
This is the “long-form video bundle” play used by top creators — HAI builds anticipation, CutFast extends the long-tail.
Complementary Strategy 3: HAI for Theme, CutFast for Evidence
To produce a piece on “the AI video landscape”:
- HAI generates the main content (industry data, technical principles, market analysis)
- CutFast extracts 3-5 expert-opinion clips from your past interviews with practitioners, embedded into the HAI-generated video
AI-generated frames + real expert testimony = a piece with maxed-out information density and persuasiveness.
Frequently Asked Questions
Q1: Will HAI make CutFast-style editing tools obsolete?
No. HAI solves “from nothing to something.” CutFast solves “from something to something-better.” These two problems don’t substitute for each other in user scenarios. In fact, HAI’s growth will expand the total AI video market — demand for tools like CutFast will grow alongside.
Q2: Is HAI available now?
Per Bilibili’s public timeline, HAI is in summer release phase; the specific launch date hasn’t been officially announced. CutFast is available now — try the free tier.
Q3: Does HAI support English or Japanese?
Per Q2 2026 disclosures, HAI only supports Chinese script input. If you need multi-language video output (English/Japanese/Korean), CutFast is the better choice — CutFast’s subtitle recognition supports Chinese-English bilingual content with translation export.
Q4: Can HAI-generated videos be published on YouTube?
HAI’s output format currently prioritizes the Bilibili ecosystem. Cross-platform distribution depends on whether HAI exposes horizontal/vertical/square multi-ratio export — not publicly disclosed yet. CutFast auto-exports three ratios from one edit pass, fully cross-platform.
Q5: Can CutFast process HAI-generated videos?
Yes. Download HAI’s output and feed it into CutFast — CutFast converts it to subtitle text → fine-edit in text → re-export. That makes a “HAI drafts, CutFast polishes” workflow — AI-generated videos typically need polishing, and CutFast fills exactly that gap.
Next Step: Try CutFast Now + Track HAI’s Launch Timing
CutFast is ready to test today — drop a recent long-form video into CutFast’s free tier and run 20 minutes to see whether it produces 8-10 publishable clips.
After HAI enters the summer release phase, track Bilibili’s official blog for updates. If you write fast and have no shooting resources, the first wave of HAI users will likely capture a cold-start bonus window in Bilibili’s algorithm.
The final decision framework is simple: is your core asset “text” or “video/audio”? Text-asset creators use HAI primarily. Video/audio-asset creators use CutFast primarily. Those with both assets use both tools.
CutFast Team