GPT-5 Nano
OpenAI · Multimodal · Released Aug 2025
GPT-5 Nano is OpenAI's smallest general-purpose model in the GPT-5 family, with a 400k token context window.
- Strengths
- Nano delivers fast inference and efficient resource usage while maintaining broad capabilities across language tasks.
- Best for
- Applications where speed and efficiency matter more than peak reasoning ability, such as real-time chat, content classification, and lightweight automation.
- Limitations
- As the smallest tier in the GPT-5 lineup, Nano trades raw reasoning power for speed; it's not designed for complex analysis or specialized tasks like code generation or research.
Input / 1M
$0.05
Output / 1M
$0.4
Cached input / 1M
$0.005
Context window
400K
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in decreased 0.0% out decreased 0.0%
- 90d
- in decreased 0.0% out decreased 0.0%
- 1y
- in decreased 0.0% out decreased 0.0%
- Since launch
- in decreased 0.0% out decreased 0.0%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 13 Jul 2026 | $0.05 | $0.4 | $0.005 | Imported from OpenRouter | openrouter.ai |
| 11 Jun 2026 | $0.05 | $0.4 | $0.01 | Imported from OpenRouter | openrouter.ai |