GPT-5 Nano vs GPT-5 Pro
Compare pricing, context windows, and strengths for GPT-5 Nano by OpenAI and GPT-5 Pro by OpenAI - and see how to put either to work in Appaca.
GPT-5 Nano
The fastest and cheapest GPT-5 variant, ideal for summarization, classification, and lightweight tasks requiring high speed and low cost.
View GPT-5 NanoGPT-5 Pro
A premium GPT-5 variant that uses more compute to deliver consistently smarter, more precise reasoning for the toughest problems.
View GPT-5 ProGPT-5 Nano vs GPT-5 Pro at a glance
Specs and pricing side by side, from the Appaca AI models directory.
| Spec | GPT-5 Nano | GPT-5 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Model type | Text | Text |
| Context window | 400K tokens | 400K tokens |
| Input price | $0.05 / 1M tokens | $15 / 1M tokens |
| Output price | $0.4 / 1M tokens | $120 / 1M tokens |
| Status | Current | Current |
How GPT-5 Nano and GPT-5 Pro differ
What the numbers mean in practice when choosing between GPT-5 Nano and GPT-5 Pro.
-
GPT-5 Nano is 100% cheaper on input tokens ($0.05 vs $15 per million), which adds up quickly in document-heavy workloads.
-
GPT-5 Nano is 100% cheaper on output tokens ($0.4 vs $120 per million) - the bigger factor for tools that generate long documents.
-
Both models offer the same 400K tokens context window.
Strengths side by side
Where each model shines, according to benchmarks and provider positioning.
GPT-5 Nano
1. 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.)
GPT-5 Pro
1. Highest reasoning quality in the GPT-5 family
- Uses significantly more compute to "think harder" before responding.
- Designed for the toughest reasoning tasks where answer quality matters more than speed.
- Produces more precise, reliable, and detailed outputs than standard GPT-5.
2. Advanced multi-turn reasoning via Responses API
- Available only in the Responses API to support:
- Multi-turn internal model interactions before returning a reply.
- Advanced control patterns (e.g., background mode for long-running jobs).
- Ideal for complex workflows, deep planning, and multi-step analysis.
3. Configured for maximum effort by default
- Always runs with reasoning.effort: 'high' (no lower-effort mode).
- Prioritizes depth and correctness over latency and cost.
4. Multimodal input
- Accepts text + image as input.
- Outputs text, with strong instruction-following and analysis capabilities.
5. Tooling and ecosystem integration
- Supports Web Search, File Search, and Image Generation (as tools).
- Supports MCP and other Responses API tooling patterns.
- Does not support Code Interpreter and does not support Computer Use, keeping focus on pure reasoning + tools.
Use GPT-5 Nano or GPT-5 Pro - or both
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-5 Nano or GPT-5 Pro - connected to your real data and ready for your whole team. No code, no deployment.
Describe it, and it's built
Tell the Appaca agent the internal tool you need and it builds a working app powered by GPT-5 Nano or GPT-5 Pro. No code, no API keys, no deployment.
Switch models without rebuilding
Start on GPT-5 Nano, test the same tool on GPT-5 Pro, and keep whichever performs better - the rest of your app stays exactly as it is.
Automated for the whole team
Schedule tools to run on autopilot - daily digests, weekly reports, real-time triggers - and share them with your whole team from one workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-5 Nano or GPT-5 Pro - connected to the tools you already use.
Related comparisons
See how GPT-5 Nano and GPT-5 Pro stack up against other models in the directory.
FAQs
GPT-5 Nano is generally cheaper: $0.05 input / $0.4 output per million tokens, versus $15 / $120 for GPT-5 Pro. Actual cost depends on how many tokens your workload reads and writes.
They are equal: both GPT-5 Nano and GPT-5 Pro support a 400K tokens context window.
It depends on the job. Compare the pricing, context window, and strengths above against your workload - and remember the choice isn't permanent. In Appaca you can build a tool on GPT-5 Nano, test the same tool on GPT-5 Pro, and switch at any time without rebuilding anything.
Yes. Appaca is a no-code AI workspace: describe the internal tool your team needs and the Appaca agent builds it as a working app powered by GPT-5 Nano, GPT-5 Pro, or any other model in the directory - with a built-in database, team access, and integrations. No API keys to wire up and nothing to deploy.
Build AI tools with GPT-5 Nano or GPT-5 Pro
Describe the tool your team needs and get a working app powered by the model you choose - with a built-in database, team access, and integrations. No code, no deployment.