GPT-5 Nano
OpenAI · Multimodal · Released Aug 2025
OpenAI's smallest general-purpose model in the GPT-5 family, built for fast and efficient inference with a 400k token context window.
- Strengths
- Delivers substantially faster inference than larger models in the GPT-5 lineup while maintaining broad language understanding across general tasks.
- Best for
- Applications where speed and resource efficiency matter more than maximum reasoning depth—lightweight summarization, classification, content generation, and real-time applications at scale.
- Limitations
- Handles less complex reasoning and context-dependent tasks than GPT-5 or GPT-5 Mini; not optimized for specialized domains like code (use GPT-5 Codex for that).
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 — out —
- 90d
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- 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 |