As of April 9, 2026, the strongest public evidence around HappyHorse 1.0 comes from @ArtificialAnlys.

• HappyHorse 1.0 appeared as a pseudonymous video model in the Artificial Analysis video arena.
• It reached #1 in Text-to-Video / Image-to-Video (No Audio).
• It reached #2 in the corresponding With Audio ranking.
• Artificial Analysis also published example images and side-by-side comparison videos against Dreamina Seedance 2.0, Kling 3.0 Pro, grok-video-imagine, and PixVerse V6.

What remains unclear is the identity of the team behind it. The claims tying it to Alibaba / Taotian Group and an eventual open-source release spread quickly, but were not publicly confirmed by Alibaba-affiliated official accounts at that point.

• @ArtificialAnlys publicly introduced HappyHorse 1.0, stated its ranking, and published images and comparison videos.

• @gmi_cloud re-recorded several matchups based on the Artificial Analysis comparison page. Useful as a community signal, but not as proof of ownership.

• @bdsqlsz first suggested the model came from a Chinese company, then later said it came from Alibaba's Taotian Group and might be open-source.
• @zephyr_z9 amplified that rumor into a broader public narrative.

• @Physalis20 explicitly pushed back on the Alibaba plus open-source narrative and stressed that no official public confirmation had appeared.

@ArtificialAnlys introduced HappyHorse 1.0 as a pseudonymous video model that was already #1 in no-audio rankings and #2 in the with-audio ranking.

Original post: https://x.com/ArtificialAnlys/status/2041591989083500933

Artificial Analysis followed with a thread of comparison videos based on prompts such as a child spinning a hula hoop, a golf ball circling the rim before dropping in, a cat reacting to its reflection in a toaster, and a barista pouring latte art.

Representative post: https://x.com/ArtificialAnlys/status/2041591993386856448

@zephyr_z9 amplified the Alibaba / Taobao / open-source claim. This mattered because it turned an insider-style rumor into a high-visibility public storyline.

Original post: https://x.com/zephyr_z9/status/2041806070545575940

@gmi_cloud posted re-recorded comparisons and highlighted HappyHorse 1.0's surprisingly strong multi-shot quality.

Original post: https://x.com/gmi_cloud/status/2041952066873221288

@Physalis20 called the Alibaba / open-source narrative misinformation and stressed the lack of official confirmation.

Original post: https://x.com/Physalis20/status/2041996617415278958

• HappyHorse 1.0 entered the public conversation through @ArtificialAnlys.
• It ranked extremely high in the Artificial Analysis video arena.
• Artificial Analysis released images and multiple comparison videos featuring the model.
• The model quickly became the subject of community comparisons and commentary.

• HappyHorse 1.0 came from a Chinese team.
• HappyHorse 1.0 was tied to Alibaba or Taotian Group.
• HappyHorse 1.0 would be open-source.

Reverse checks around HappyHorse surfaced ranking and samples from @ArtificialAnlys, but no relevant public confirmation from @Alibaba_Cloud or @QwenLM. That leaves the ownership question unresolved.

Sample 1	Sample 2

GitHub may not inline-play these attachments in every context, but the MP4 backups are linked below.

• Artificial Analysis comparison video, Prompt 1: https://github.com/user-attachments/assets/8a722c66-9957-4187-9e13-3794ece1e4a9
• GMI Cloud matchup compilation: https://github.com/user-attachments/assets/864ca6a3-5e85-4327-a10c-8b8a4b2251af

• Artificial Analysis original post: https://x.com/ArtificialAnlys/status/2041591989083500933
• Artificial Analysis comparison post 1: https://x.com/ArtificialAnlys/status/2041591993386856448
• Artificial Analysis comparison post 2: https://x.com/ArtificialAnlys/status/2041591995106521352
• Artificial Analysis comparison post 3: https://x.com/ArtificialAnlys/status/2041591996754903188
• Artificial Analysis comparison post 4: https://x.com/ArtificialAnlys/status/2041591999061758171
• Artificial Analysis arena link post: https://x.com/ArtificialAnlys/status/2041592000684978546
• @bdsqlsz Chinese-company claim: https://x.com/bdsqlsz/status/2041793884146299288
• @bdsqlsz Taotian claim: https://x.com/bdsqlsz/status/2041804452504690928
• @zephyr_z9 amplification post: https://x.com/zephyr_z9/status/2041806070545575940
• @gmi_cloud re-test post: https://x.com/gmi_cloud/status/2041952066873221288
• @Physalis20 counter-post: https://x.com/Physalis20/status/2041996617415278958
• Seedance 2.0 videos: https://www.seedance2ai.app, https://www.seedance2.ink

The safest concise formulation is:

HappyHorse 1.0 emerged on April 8, 2026 as a pseudonymous video generation model introduced by Artificial Analysis. It immediately attracted attention by taking the top spot in the no-audio video rankings and by holding up well in comparison clips against leading competitors. At the same time, a fast-moving rumor cycle formed around the idea that the model came from Alibaba or Taotian Group and might be open-source. As of April 9, 2026, that identity claim remained widely discussed but not publicly confirmed by official Alibaba-affiliated accounts.

• whether @ArtificialAnlys later publicly reveals the identity behind HappyHorse,
• whether Alibaba, Qwen, Wan, or another affiliated account formally claims the model,
• and whether a paper, model card, release page, or weight release appears and turns this from a rumor map into a fully documented release history.