Base URL:
https://api.laozhang.ai/v1/chat/completions
API Version: v1
Service Status: Running | No Watermark | No Invitation Code RequiredMajor Updates
Release Date: October 1, 2025 OpenAI suddenly released Sora 2 new version (The New Sora), and we integrated official website API immediately (reverse-engineered, before OpenAI released official API).Latest Updates
- 10/20 Massive price drop for 15s models! From 0.15/call, all models unified pricing; Added raw error log feature
- 10/18 Added support for generating videos with Sora native watermark (default is no watermark)
- 10/16 Restored 15-second models (sora_video2-15s and sora_video2-landscape-15s)
- 10/10 Added sora-2-pro-all HD model, supports HD 1080P and 15-second duration
- 10/07 Added Python example code; official sora-2 and sora-2-pro models launched but with high pricing and rate limits
- 10/01 Integrated Sora 2 reverse-engineered API, supports text-to-video and image-to-video
Sora 2 Core Breakthroughs
Audio-Video Sync
First-time synchronized audio-video generation
Physical Realism
Dramatically improved physical realism
Long Video Support
Supports 10-16 second coherent narrative videos
No Watermark Output
Generated videos have no watermark (official website has watermarks)
Cameo Feature
Supports integrating real-person recorded clips into AI scenes
Remix Feature
Supports community remixing
Core Features
Text-to-Video
Generate videos from pure text descriptions
Image-to-Video
Supports reference images (up to 1 image)
Sync API
Quick testing with real-time streaming progress
Async API
More stable task queue approach (recommended for production)
Multi-Spec Support
Horizontal and vertical orientation options
Pay-per-Use
Charged only by generation count
Workflow
1
Configure API Key
Get API key from laozhang.ai console, set to pay-as-you-go or pay-per-use mode
2
Send Request
Call
/v1/chat/completions endpoint, specify model and prompt3
Real-time Progress
View task queue and generation progress through streaming output
4
Get Video
Obtain video link after generation completes (valid for 1 day)
5
Download & Save
Download video to local storage immediately
Model Update Notice15-second versions are now available, offering longer video generation duration!Due to official OpenAI’s computing power limitations, -hd (high definition) versions are temporarily unavailable and will be re-launched once resources are sufficient.
Supported Models
| Model | Resolution | Duration | Price | Stability |
|---|---|---|---|---|
sora_video2 | 704×1280 | 10s | $0.15/video | ⭐⭐⭐⭐⭐ Extremely High |
sora_video2-landscape | 1280×704 | 10s | $0.15/video | ⭐⭐⭐⭐⭐ Extremely High |
sora_video2-15s | 704×1280 | 15s | $0.15/video | ⭐⭐⭐⭐⭐ Extremely High |
sora_video2-landscape-15s | 1280×704 | 15s | $0.15/video | ⭐⭐⭐⭐⭐ Extremely High |
sora-2-pro-all | 1024×1792 | 15s | $0.4/video | ⭐⭐⭐ Fair |
Video Specifications
- Duration: 10 seconds or 15 seconds (selected via model name)
- Quality: 720P / HD
- Orientation: Vertical or horizontal (selected via model name)
- Watermark: No watermark
- Audio: Supports audio-video synchronization
API Method Selection
Recommended to use Async API, especially in production environments or when batch generating videos, for better stability.
| Feature | Sync API | Async API (Recommended) |
|---|---|---|
| Endpoint | /v1/chat/completions | /v1/videos |
| Stability | Depends on long connection | ⭐⭐⭐⭐⭐ More Stable |
| Use Cases | Quick testing, real-time feedback | Production environment, batch generation |
Getting Started
Sync API
Quick start with streaming output (for testing)
Async API
Task queue, more stable (recommended for production)
Model Pricing
Learn detailed model comparison and pricing
Code Examples
View multi-language example code
API Reference
View complete API documentation
FAQ
Solve common issues
Important Notes
Video storage valid for only 1 day!Generated videos are stored on domestic CDN for convenient access by domestic users. Please download and save to local storage immediately after generation.
Both models have extremely high stability. Choose horizontal or vertical mode based on your video display scenario.