GrsAi API – the most affordable AI model API of 2026, allows you to easily call popular models such as Sora2, Nano Banana Pro, and GPT Image 1.5.

Looking for a reliable, high-performance, and affordable API to integrate the latest AI models like Nano Banana Pro, GPT-Image 1.5, Sora 2, Veo 3.1, and Gemini 3 into your applications or workflows?

Meet GrsAI API — a direct AI service provider offering stable and cost-effective APIs for image, video, and text generation. Designed for developers, studios, and heavy-generation users worldwide, GrsAI bypasses middlemen to deliver premium AI capabilities at true source prices.

I. How to Access Grsai?

1.Official website: grsai.com
2.Bulk generation tool: image.grsai.com

II. What is Grsai? Is it reliable?
Grsai is a source supplier focused on providing stable, high-cost-performance AI painting API. Its core positioning is to serve developers, studios, and users with large-scale image generation needs.

·API source service: Provides API interfaces for mainstream AI models (such as Nano Banana Pro, Sora2, Gpt image1.5, Veo3.1, Gemini3…..), convenient for developers to integrate into their own applications, bots, or workflows.
·Cheap and stable: Not a reseller, so it can achieve low prices, with 24-hour online technical support to ensure service stability.
Instant refund on failure: Direct instant refund on generation failure, with log query records.
·Comprehensive backend service: Clear dashboard to monitor API usage, logs, model status, etc. at any time.
·Storage library function: Generated images are saved in the user’s private storage library, providing temporary links. Saves user traffic and storage costs; images can be directly called from Grsai’s storage links.
·Bulk generation tool: Through the image.grsai.com tool, users can perform large-scale image generation tasks without programming, greatly improving work efficiency.

III. Introduction to Some Models

1.Image models (text-to-image)

·GPT-Image 1.5: $0.02/image
·Nano Banana: $0.022/image, choosing the fast version has higher cost performance
·Nano Banana Pro:

How to choose among the 5 pro versions?
Preferred: Timeouts may occur during workday peak periods (afternoon/evening) and cannot generate

·Nano-Banana-Pro-vt: $0.09/image (1–2–4k highest resolution, best quality channel)
·Nano-Banana-Pro-pro: $0.09/image (1–2–4k)

Alternative: Paid channels are more expensive but more stable

·Nano-Banana-Pro-cl: $0.17/image (1–2–4k)
·Nano-Banana-Pro-vip: $0.35/image (1–2k)
·Nano-Banana-Pro-4k-vip: $0.43/image (4k)

Recommended to use preferred and alternative in combination. Nano Banana 2, no matter which channel, will have instability issues; only by switching to alternative channels can service stability be guaranteed!

2.Video models (text-to-video)

·Sora 2: $0.08/video, supports Cameo (create characters), Remix (remake videos), multi-character upload, and AI video upload characters, etc. advanced features
·Veo 3.1/3.0: $0.4/video, Pro/fast versions do not support Chinese prompts

3.Text models (dialogue/writing)

·Gemini 2.5 Pro: input: 1.25 /M tokens, output: 6.25~ /M tokens
·Gemini 3 Pro: input: 1/M tokens, output: 6/M tokens

For details, see the model list: https://grsai.com/dashboard/models

IV. GrsAi Popular Model Integration Tutorials

1.Visit the official website https://grsai.com

2.Create APIkey in the console (can set limit quota)

3.View development documentation to integrate models

Node information

textHost (internationality): https://grsaiapi.com
Host (China Special): https://grsai.dakka.com.cn
Usage: Host + interface: https://grsai.dakka.com.cn/v1/draw/nano-banana

Nano Banana Pro API Integration Practice

Nano Banana — — $0.022/image, Nano Banana Pro-$0.09/image, Google’s Nano Banana model has strong image editing capabilities, can maintain consistency of up to 14 images for characters, Supports output of multiple languages, possesses world knowledge and thinking analysis abilities. Especially suitable for cross-border e-commerce, domestic e-commerce product image design, posters/promotional materials production. Simple operation, natural language description for quick iteration, efficient generation of professional-level visual content.

Official interface calling method:

Replace base address with Grsai’s address, model name gemini-2.5-flash-image changed to nano-banana-fast
url example: https://grsai.dakka.com.cn/v1beta/models/nano-banana-fast:streamGenerateContent

import requests
import time

api_key = "sk-your APIKey"
base_url = "https://grsai.dakka.com.cn"  # domestic address, overseas address: https://grsaiapi.com

def nano_banana_pro(prompt):
    """Generate image - one-line call"""
    # 1. Submit task
    data = {
        "model": "nano-banana-pro",  # nano-banana-fast is Banana 1 model
        "prompt": prompt,
        "aspectRatio": "1:1",
        "webHook": "-1"
    }
    
    res = requests.post(f"{base_url}/v1/draw/nano-banana", 
                       json=data,
                       headers={"Authorization": f"Bearer {api_key}"})
    
    task_id = res.json()["data"]["id"]
    print(f"Task ID: {task_id}")
    
    # 2. Poll results (wait up to 30 seconds)
    for _ in range(6):
        time.sleep(5)
        result = requests.post(f"{base_url}/v1/draw/result", 
                              json={"id": task_id},
                              headers={"Authorization": f"Bearer {api_key}"})
        data = result.json()["data"]
        
        if data["status"] == "succeeded":
            print("✅ Generation successful!")
            print(f"Image URL: {data['results'][0]['url']}")
            return data['results'][0]['url']
        elif data["status"] == "failed":
            print("❌ Generation failed")
            return None
    
    print("⏰ Timeout")
    return None

# Usage: image_url = nano_banana_pro("A cute cat")

Gpt image 1.5 API Integration Tutorial

GPT Image 1.5 — — $0.02/image, is OpenAI’s flagship image model, designed for professional-level visual content, generation speed up to 4 times faster than previous generation. Chinese prone to deformation, strong character consistency, powerful editing capabilities, is a good alternative to Nano banana pro.

import requests
import time

api_key = "sk-your APIKey"
base_url = "https://grsai.dakka.com.cn"  # domestic address, overseas address: https://grsaiapi.com

def gpt_image_15(prompt):
    """Generate image"""
    data = {
        "model": "gpt-image-1.5",
        "prompt": prompt,
        "size": "1:1",
        "webHook": "-1"
    }
    
    res = requests.post(f"{base_url}/v1/draw/completions", 
                       json=data,
                       headers={"Authorization": f"Bearer {api_key}"})
    
    task_id = res.json()["data"]["id"]
    
    for _ in range(6):
        time.sleep(5)
        result = requests.post(f"{base_url}/v1/draw/result", 
                              json={"id": task_id},
                              headers={"Authorization": f"Bearer {api_key}"})
        data = result.json()["data"]
        
        if data["status"] == "succeeded":
            print(f"✅ Image: {data['results'][0]['url']}")
            return data['results'][0]['url']
        elif data["status"] == "failed":
            return None
    
    return None

# Usage: gpt_image_15("Beach at sunset")

Sora2 API Integration Tutorial

Sora 2-$0.08/video, is OpenAI’s strongest text-to-video model, supports synchronous audio and advanced physical simulation. Accurate physical simulation (gravity, buoyancy, rigidity), smooth motion, supports multi-shot narrative; excellent synchronous audio, including precise lip sync, sound effects, and background sounds; strong character consistency, can extend via image/video input, maintaining stable character appearance and actions; precise Chinese prompt understanding, clear and natural subtitle text. Especially suitable for cross-border/domestic e-commerce short videos, product displays, advertising promotion, natural language + image input for quick iteration of professional short videos with sound.

import requests
import time

api_key = "sk-your APIKey"
base_url = "https://grsai.dakka.com.cn"  # domestic address, overseas address: https://grsaiapi.com

def sora2_video(prompt):
    """Generate video"""
    data = {
        "model": "sora-2",
        "prompt": prompt,  # English only
        "aspectRatio": "9:16",
        "duration": 10,
        "webHook": "-1"
    }
    
    res = requests.post(f"{base_url}/v1/video/sora-video", 
                       json=data,
                       headers={"Authorization": f"Bearer {api_key}"})
    
    task_id = res.json()["data"]["id"]
    
    for _ in range(10):  # Video generation takes longer, wait more
        time.sleep(10)
        result = requests.post(f"{base_url}/v1/draw/result", 
                              json={"id": task_id},
                              headers={"Authorization": f"Bearer {api_key}"})
        data = result.json()["data"]
        
        if data["status"] == "succeeded":
            print(f"✅ Video: {data['results'][0]['url']}")
            return data['results'][0]['url']
        elif data["status"] == "failed":
            return None
    
    return None

# Usage: sora2_video("A cat playing volleyball on the beach")

V.Summarize

Grsai is a reliable AI API provider, focusing on offering stable, low-cost API interfaces for mainstream AI models (such as GPT-Image 1.5, Nano Banana series, Sora 2, Veo 3.1, Gemini series, etc.), covering areas such as text-to-image generation, text-to-video generation, and text generation. Sold directly without intermediaries, it offers high cost-effectiveness and is highly recommended for users who need efficient and low-cost access to cutting-edge AI models.

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