GPT-5.1 vs GPT-5 Nano
Compare GPT-5.1 and GPT-5 Nano. Find out which model is better for your specific use case and requirements.
Model Comparison
| Feature | GPT-5.1 | GPT-5 Nano |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Model Type | text | text |
| Context Window | 400,000 tokens | 400,000 tokens |
| Input Cost | $1.25/ 1M tokens | $0.05/ 1M tokens |
| Output Cost | $10.00/ 1M tokens | $0.40/ 1M tokens |
Strengths & Best Use Cases
GPT-5.1
OpenAI- Best model for deep reasoning, coding, and agent workflows
- Supports configurable reasoning and minimal reasoning modes
- Multimodal: text + image (input & output)
- Excellent tool use chaining and long-form task handling
- Stronger accuracy, reliability, and instruction-following than GPT-5
GPT-5 Nano
OpenAI1. Extremely fast performance
- Fastest model in the GPT-5 family.
- Great for real-time workflows, rapid responses, and high-throughput systems.
2. Most cost-efficient GPT-5 model
- Lowest input and output token costs.
- Suitable for large-scale or budget-sensitive applications.
3. Ideal for lightweight, well-scoped tasks
- Excels at summarization, classification, text extraction, and simple logic tasks.
- Best used when tasks are narrow and well-defined.
4. Multimodal input
- Accepts text + image as input.
- Outputs text only.
5. Broad tool support
- Supports Web Search, File Search, Image Generation (as a tool), Code Interpreter, and MCP.
- (Does not support Computer Use.)
Try These Prompts
Discover AI prompts that work great with these models. Use them to build powerful AI tools on Appaca.
Best for GPT-5.1
textSEO Blog Post Generator
Create high-ranking, engaging blog posts with proper SEO structure, keyword optimization, and readability.
Creative Short Story Generator
Generate unique short stories with compelling plots, diverse characters, and immersive settings.
Twitter/X Thread Generator
Create viral Twitter threads that educate, entertain, and grow your following with compelling hooks and strategic formatting.
Best for GPT-5 Nano
textCold Email Generator
Generate personalized cold emails that get responses using proven frameworks and personalization techniques.
Email Subject Line Generator
Generate high-converting email subject lines that boost open rates using proven psychological triggers and A/B testing frameworks.
Creative Short Story Generator
Generate unique short stories with compelling plots, diverse characters, and immersive settings.
Use Appaca to make AI tools powered by GPT-5.1 or GPT-5 Nano
Turn your AI ideas into AI products with the right AI model
Appaca is the complete platform for building AI agents, automations, and customer-facing interfaces. No coding required.
Customer-facing Interface
Create and style user interfaces for your AI agents and tools easily according to your brand.
Multimodel LLMs
Create, manage, and deploy custom AI models for text, image, and audio - trained on your own knowledge base.
Agentic workflows and integrations
Create a workflow for your AI agents and tools to perform tasks and integrations with third-party services.
Trusted by incredible people at
All you need to launch and sell your AI products with the right AI model
Appaca provides out-of-the-box solutions your AI apps need.
Monetize your AI
Sell your AI agents and tools as a complete product with subscription and AI credits billing. Generate revenue for your busienss.
“I've built with various AI tools and have found Appaca to be the most efficient and user-friendly solution.”
Cheyanne Carter
Founder & CEO, Edubuddy
Put your AI idea in front of your customers today
Use Appaca to build and launch your AI products in minutes.