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diwushennian4955
diwushennian4955

Posted on • Originally published at nexa-api.com

I Tested GPT-5.2, Sora 2, Veo 3.1 & GPT Image 1.5 APIs — Here's How to Use Them All in One SDK

#ai #api #javascript #python

2026 is wild. Four completely different AI models — GPT-5.2 for text, GPT Image 1.5 for images, Sora 2 for short videos, and Veo 3.1 for cinematic video — and each one requires a separate account, separate billing, and a separate SDK.

I got tired of juggling four different APIs, so I switched to NexaAPI — one unified SDK that gives you access to all of them at 75-85% cheaper than going direct.

Here's what I found.

The Setup (30 seconds) 

pip install nexaapi
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from nexaapi import NexaAPI
client = NexaAPI(api_key='YOUR_API_KEY')
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That's it. Get your free key at nexa-api.com — no credit card needed.

GPT-5.2: The Text Powerhouse

GPT-5.2 has a 400K context window and is designed for autonomous agent workflows. Here's how I use it:

response = client.chat.completions.create(
    model='gpt-5.2',
    messages=[{'role': 'user', 'content': 'Explain quantum computing in simple terms'}]
)
print(response.choices[0].message.content)
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My take: The reasoning quality is noticeably better than GPT-4o. The 400K context window is a game-changer for long document analysis.

GPT Image 1.5: Photorealistic Images 

image = client.images.generate(
    model='gpt-image-1.5',
    prompt='A futuristic cityscape at sunset, photorealistic, 8K quality',
    size='1024x1024'
)
print(image.data[0].url)
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My take: At $0.003/image through NexaAPI (vs $0.020 direct), this is a no-brainer for any app that needs AI-generated visuals.

Sora 2: Quick Marketing Videos 

video = client.videos.generate(
    model='sora-2',
    prompt='A timelapse of a blooming flower in a garden, cinematic quality',
    duration=5
)
print(video.data[0].url)
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My take: Perfect for 5-15 second marketing clips. Fast generation, consistent quality.

Veo 3.1: Cinematic Quality 

video2 = client.videos.generate(
    model='veo-3.1',
    prompt='Aerial drone shot of a mountain range at golden hour, cinematic 4K',
    duration=8,
    resolution='1080p'
)
print(video2.data[0].url)
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My take: This is the one for brand films and high-quality content. The 1080p output is genuinely impressive.

The Full Pipeline (All 4 Models)

Here's a complete multimodal content pipeline in under 50 lines:

from nexaapi import NexaAPI

client = NexaAPI(api_key='YOUR_API_KEY')

def create_content_package(topic: str):
    # Text
    text = client.chat.completions.create(
        model='gpt-5.2',
        messages=[{'role': 'user', 'content': f'Write a tagline for: {topic}'}]
    ).choices[0].message.content

    # Image
    img = client.images.generate(
        model='gpt-image-1.5',
        prompt=f'Professional photo of {topic}, white background',
        size='1024x1024'
    ).data[0].url

    # Short video
    vid = client.videos.generate(
        model='sora-2',
        prompt=f'5-second promo clip for {topic}',
        duration=5
    ).data[0].url

    # Cinematic
    cine = client.videos.generate(
        model='veo-3.1',
        prompt=f'Cinematic brand film for {topic}',
        duration=8, resolution='1080p'
    ).data[0].url

    return {'text': text, 'image': img, 'video': vid, 'cinematic': cine}

result = create_content_package('AI-powered smartwatch')
print(result)
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Pricing: Why NexaAPI Wins

Model Direct NexaAPI Savings
GPT-5.2 $0.015/1K $0.003/1K 80%
GPT Image 1.5 $0.020/img $0.003/img 85%
Sora 2 $0.20/vid $0.05/vid 75%
Veo 3.1 $0.35/vid $0.08/vid 77%

JavaScript Version 

import NexaAPI from 'nexaapi'; // npm install nexaapi

const client = new NexaAPI({ apiKey: 'YOUR_API_KEY' });

// All 4 models
const text = await client.chat.completions.create({ model: 'gpt-5.2', messages: [...] });
const image = await client.images.generate({ model: 'gpt-image-1.5', prompt: '...' });
const video = await client.videos.generate({ model: 'sora-2', prompt: '...', duration: 5 });
const cinematic = await client.videos.generate({ model: 'veo-3.1', prompt: '...', duration: 8 });
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Wrap Up

If you're building anything with AI in 2026, you shouldn't be managing 4 different API accounts. NexaAPI makes it one SDK, one key, one bill.

Which model are you most excited to build with? Drop a comment below! 👇

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