OpenAI: GPT-5 Nanoopenai
Bottom Line
OpenAI: GPT-5 Nano: $0.05/1M input, $0.40/1M output, 400K context, CPS grade B. GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
API Pricing (per 1M tokens)
| Input | $0.05 |
| Output | $0.40 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $0.14 |
Specs & Performance
| Context Length | 400K |
| Max Output | 128K |
| Intelligence | 13 |
| Coding | 20 |
| Math | 84 |
| Speed | — |
| TTFT | — |
| CPS Grade | B |
| Input / Output Modalities | text, image, file → text |
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FAQ
How much does the OpenAI: GPT-5 Nano API cost?
OpenAI: GPT-5 Nano costs $0.05/1M input tokens and $0.40/1M output tokens. Blended cost at a 3:1 ratio is about $0.14/1M tokens.
What is the context window of OpenAI: GPT-5 Nano?
OpenAI: GPT-5 Nano supports a 400K token context window with up to 128K output tokens.
Is OpenAI: GPT-5 Nano worth it?
OpenAI: GPT-5 Nano has a CPS grade of B (score 63), intelligence index 13, coding index 20. Use the compare page to benchmark against rivals.