https://arena.ai/agent
Peter Gostev puts Moonshot’s Kimi K3.1 Pro, the follow-up to the open-weight Kimi K3, through 3D scenes, HTML animations, website and UI builds, and research-driven pages. He compares it with Kimi K3, Opus 5.5, Sonnet 5.5, GPT 6.1 Sol, GPT 5.6 Sol, Gemini 4 Argon, DeepSeek 4.1 Flash, and the Muse Wonder models.
Peter’s take: Kimi K3.1 Pro is a huge jump over K3, but in these tests it’s not quite at the frontier, and cost is a big part of the story.
Note on pricing: K3.1 pricing wasn’t available when this was recorded, so the costs shown use Kimi K3 prices. The actual cost is approximately a third lower.
Peter’s prompts:
https://github.com/petergpt/3d-prompt-collection
0:00 3D scene: dinosaurs
3:12 3D scene: bears and salmon
7:32 3D scene: Acropolis
9:38 3D scene: Roman town center (voxel)
12:21 3D scene: Tower of Babel
14:55 HTML story: first example
16:43 HTML story: Taj Mahal
17:45 HTML animation: Trojan horse on a vase
19:24 HTML scene: Venice
20:34 Animation: train delivering mail
22:46 Website: ramen shop
27:07 Website: toy store
29:26 Data layout: Grand Prix
32:22 Research UI: alpine walk
35:06 Research UI: data center map
38:19 Research UI: shopping comparison
39:19 Closing thoughts on competition and cost
41:19 Claymation example
#arenaai #moonshotai #opensource #llm
Peter Gostev puts Moonshot’s Kimi K3.1 Pro, the follow-up to the open-weight Kimi K3, through 3D scenes, HTML animations, website and UI builds, and research-driven pages. He compares it with Kimi K3, Opus 5.5, Sonnet 5.5, GPT 6.1 Sol, GPT 5.6 Sol, Gemini 4 Argon, DeepSeek 4.1 Flash, and the Muse Wonder models.
Peter’s take: Kimi K3.1 Pro is a huge jump over K3, but in these tests it’s not quite at the frontier, and cost is a big part of the story.
Note on pricing: K3.1 pricing wasn’t available when this was recorded, so the costs shown use Kimi K3 prices. The actual cost is approximately a third lower.
Peter’s prompts:
https://github.com/petergpt/3d-prompt-collection
0:00 3D scene: dinosaurs
3:12 3D scene: bears and salmon
7:32 3D scene: Acropolis
9:38 3D scene: Roman town center (voxel)
12:21 3D scene: Tower of Babel
14:55 HTML story: first example
16:43 HTML story: Taj Mahal
17:45 HTML animation: Trojan horse on a vase
19:24 HTML scene: Venice
20:34 Animation: train delivering mail
22:46 Website: ramen shop
27:07 Website: toy store
29:26 Data layout: Grand Prix
32:22 Research UI: alpine walk
35:06 Research UI: data center map
38:19 Research UI: shopping comparison
39:19 Closing thoughts on competition and cost
41:19 Claymation example
#arenaai #moonshotai #opensource #llm