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Create AI avatar and talking head videos via inference.sh CLI. Recommended: P-Video-Avatar (fastest, cheapest, built-in TTS). Also: OmniHuman, Fabric, PixVerse. Audio: Inworld TTS-2 (100+ languages, emotion steering for characters), ElevenLabs, Kokoro. Capabilities: audio-driven avatars, text-to-avatar, lipsync videos, talking head generation, virtual presenters, UGC content.
Passed 25 of 25 test cases with the skill, and 5 of 25 without it.
and 34 more in the full report
20 fixed5 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 20 test cases the skill fixed. Same model, same prompt, with and without the skill.
What is the npx command to install the belt CLI tool skill?
| Checked | Without skill | With skill |
|---|---|---|
| Specifies npx skills add belt-sh/cli | Missed | Passed |
The instructions your model reads when the skill loads.
Install the belt CLI skill:
npx skills add belt-sh/cli
Create AI avatars and talking head videos via inference.sh CLI.
AI Avatar & Talking Head Videos
Requires inference.sh CLI (
belt). Install instructions
belt login
# Recommended: P-Video-Avatar (fastest, cheapest, built-in TTS)
belt app run pruna/p-video-avatar --input '{
"image": "https://portrait.jpg",
"voice_script": "Hello, welcome to our product demo!",
"voice": "Zephyr (Female)"
}'
Start with P-Video-Avatar — it's 18x faster and 6x cheaper than alternatives, with built-in TTS, dynamic backgrounds, and 1080p support.
| Model | App ID | Best For | Built-in TTS |
|---|---|---|---|
| P-Video-Avatar | pruna/p-video-avatar | Best overall: speed, cost, quality, control | Yes (30 voices, 10 languages) |
| OmniHuman 1.5 | bytedance/omnihuman-1-5 | Multi-character, audio-driven | No |
| Fabric 1.0 | falai/fabric-1-0 | Image talks with lipsync | Yes |
| PixVerse Lipsync | falai/pixverse-lipsync | Highly realistic lipsync | No |
| Model | Speed (per sec of video) | Cost per second |
|---|---|---|
| P-Video-Avatar | ~1.83s/s | $0.025 |
| OmniHuman 1.5 | ~28s/s (15x slower) | $0.16 (6.4x more) |
test cases passed, vs 5 / 25 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.