OpenAI LLM Models

OpenAI’s leading family of LLMs, engineered for high performance, cost-efficient reasoning, and real-world enterprise applications. With models optimized for text, code, and multimodal tasks, OpenAI delivers production-ready AI trusted by developers, researchers, and enterprises globally.

OpenAI LLM Models

Explore the Leading OpenAI LLM Models(2)

NEW
GPT OSS 20b

21B-parameter model released by OpenAI.

LLM

GPT OSS 20b

131.1K CONTEXT:
Input type:
input type icons
Output type:
output type icons
Context:131.07K
Input:Free
Output:Free
Max Output:128.00K
Free
NEW
GPT OSS 120b

117B-parameter MoE language model from OpenAI.

LLM

GPT OSS 120b

131.1K CONTEXT:
Input type:
input type icons
Output type:
output type icons
Context:131.07K
Input:$0.1/M tokens
Output:$0.2/M tokens
Max Output:128.00K
$0.1/0.2M in/out

What Stands Out - OpenAI LLM Models

Frontier Research

Cutting-edge models that set global benchmarks in reasoning, multimodality, and AI safety.

Cost-Efficient Performance

Optimized families like GPT-4.1 mini and GPT-5 nano balance accuracy, speed, and cost.

Developer Ecosystem

APIs powering millions of daily requests across diverse platforms and industries.

Flexible Model Sizes

Choice of flagship, mini, and nano models for every workload and budget.

Enterprise Reliability

SLAs, monitoring, and compliance-ready logging trusted by Fortune 500 companies.

Open Model Options

Access to open-source models (gpt-oss-20b, gpt-oss-120b) for transparency and customization.

What You Can Do - OpenAI LLM Models

Build enterprise-grade assistants with GPT-4.1 and GPT-5 for accurate, long-context reasoning.

Accelerate coding with GPT-4o and o-series for generation, debugging, and integration.

Run multimodal apps using GPT-4o for combined text and image inputs.

Optimize cost and latency by choosing flagship, mini, or nano variants.

Apply o1 and o3 models for precision in finance, compliance, and healthcare.

Deploy gpt-oss models for transparent, customizable, open-source workflows.

Run OpenAI Models
Code Example

Why Use OpenAI LLM Models on Atlas Cloud

Combining the advanced OpenAI LLM Models models with Atlas Cloud's GPU-accelerated platform provides unmatched performance, scalability, and developer experience.

Mascot

A glowing, friendly AI companion imagined by ChatGPT-5, symbolizing intelligence and human-AI collaboration.

Performance & flexibility

Low Latency:
GPU-optimized inference for real-time reasoning.

Unified API:
Run OpenAI LLM Models, GPT, Gemini, and DeepSeek with one integration.

Transparent Pricing:
Predictable per-token billing with serverless options.

Enterprise & Scale

Developer Experience:
SDKs, analytics, fine-tuning tools, and templates.

Reliability:
99.99% uptime, RBAC, and compliance-ready logging.

Security & Compliance:
SOC 2 Type II, HIPAA alignment, data sovereignty in US.

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Seedance is ByteDance’s family of video generation models, built for speed, realism, and scale. Its AI analyzes motion, setting, and timing to generate matching ambient sounds, then adds creative depth through spatial audio and atmosphere, making each video feel natural, immersive, and story-driven.

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Moonshot LLM Models

The Moonshot LLM family delivers cutting-edge performance on real-world tasks, combining strong reasoning with ultra-long context to power complex assistants, coding, and analytical workflows, making advanced AI easier to deploy in production products and services.

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Wan2.6 Video Models

Wan 2.6 is Alibaba’s state-of-the-art multimodal video generation model, capable of producing high-fidelity, audio-synchronized videos from text or images. Wan 2.6 will let you create videos of up to 15 seconds, ensuring narrative flow and visual integrity. It is perfect for creating YouTube Shorts, Instagram Reels, Facebook clips, and TikTok videos.

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Flux.2 Image Models

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Nano Banana Image Models

Nano Banana is a fast, lightweight image generation model for playful, vibrant visuals. Optimized for speed and accessibility, it creates high-quality images with smooth shapes, bold colors, and clear compositions—perfect for mascots, stickers, icons, social posts, and fun branding.

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Image and Video Tools

Open, advanced large-scale image generative models that power high-fidelity creation and editing with modular APIs, reproducible training, built-in safety guardrails, and elastic, production-grade inference at scale.

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Ltx-2 Video Models

LTX-2 is a complete AI creative engine. Built for real production workflows, it delivers synchronized audio and video generation, 4K video at 48 fps, multiple performance modes, and radical efficiency, all with the openness and accessibility of running on consumer-grade GPUs.

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Qwen Image Models

Qwen-Image is Alibaba’s open image generation model family. Built on advanced diffusion and Mixture-of-Experts design, it delivers cinematic quality, controllable styles, and efficient scaling, empowering developers and enterprises to create high-fidelity media with ease.

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Open AI Model Families

Explore OpenAI’s language and video models on Atlas Cloud: ChatGPT for advanced reasoning and interaction, and Sora-2 for physics-aware video generation.

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Hailuo Video Models

MiniMax Hailuo video models deliver text-to-video and image-to-video at native 1080p (Pro) and 768p (Standard), with strong instruction following and realistic, physics-aware motion.

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Wan2.5 Video Models

Wan 2.5 is Alibaba’s state-of-the-art multimodal video generation model, capable of producing high-fidelity, audio-synchronized videos from text or images. It delivers realistic motion, natural lighting, and strong prompt alignment across 480p to 1080p outputs—ideal for creative and production-grade workflows.

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Z.ai LLM Models

The Z.ai LLM family pairs strong language understanding and reasoning with efficient inference to keep costs low, offering flexible deployment and tooling that make it easy to customize and scale advanced AI across real-world products.

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Seedance 1.5 Video Models

Seedance is ByteDance’s family of video generation models, built for speed, realism, and scale. Its AI analyzes motion, setting, and timing to generate matching ambient sounds, then adds creative depth through spatial audio and atmosphere, making each video feel natural, immersive, and story-driven.

View Family

Moonshot LLM Models

The Moonshot LLM family delivers cutting-edge performance on real-world tasks, combining strong reasoning with ultra-long context to power complex assistants, coding, and analytical workflows, making advanced AI easier to deploy in production products and services.

View Family

Wan2.6 Video Models

Wan 2.6 is Alibaba’s state-of-the-art multimodal video generation model, capable of producing high-fidelity, audio-synchronized videos from text or images. Wan 2.6 will let you create videos of up to 15 seconds, ensuring narrative flow and visual integrity. It is perfect for creating YouTube Shorts, Instagram Reels, Facebook clips, and TikTok videos.

View Family

Flux.2 Image Models

The Flux.2 Series is a comprehensive family of AI image generation models. Across the lineup, Flux supports text-to-image, image-to-image, reconstruction, contextual reasoning, and high-speed creative workflows.

View Family

Nano Banana Image Models

Nano Banana is a fast, lightweight image generation model for playful, vibrant visuals. Optimized for speed and accessibility, it creates high-quality images with smooth shapes, bold colors, and clear compositions—perfect for mascots, stickers, icons, social posts, and fun branding.

View Family

Image and Video Tools

Open, advanced large-scale image generative models that power high-fidelity creation and editing with modular APIs, reproducible training, built-in safety guardrails, and elastic, production-grade inference at scale.

View Family

Ltx-2 Video Models

LTX-2 is a complete AI creative engine. Built for real production workflows, it delivers synchronized audio and video generation, 4K video at 48 fps, multiple performance modes, and radical efficiency, all with the openness and accessibility of running on consumer-grade GPUs.

View Family

Qwen Image Models

Qwen-Image is Alibaba’s open image generation model family. Built on advanced diffusion and Mixture-of-Experts design, it delivers cinematic quality, controllable styles, and efficient scaling, empowering developers and enterprises to create high-fidelity media with ease.

View Family

Open AI Model Families

Explore OpenAI’s language and video models on Atlas Cloud: ChatGPT for advanced reasoning and interaction, and Sora-2 for physics-aware video generation.

View Family

Hailuo Video Models

MiniMax Hailuo video models deliver text-to-video and image-to-video at native 1080p (Pro) and 768p (Standard), with strong instruction following and realistic, physics-aware motion.

View Family

Wan2.5 Video Models

Wan 2.5 is Alibaba’s state-of-the-art multimodal video generation model, capable of producing high-fidelity, audio-synchronized videos from text or images. It delivers realistic motion, natural lighting, and strong prompt alignment across 480p to 1080p outputs—ideal for creative and production-grade workflows.

View Family
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