OpenAI
GPT-5 Nano
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 counterparts, it retains key instruction-following and safety features. It is the successor to GPT-4.1-nano and offers a lightweight option for cost-sensitive or real-time applications.
- Input / 1M tokens
- $0.050
- Output / 1M tokens
- $0.400
- Context window
- 400K tokens
- Provider
- OpenAI
- Cached input / 1M
- $0.010
- Knowledge cutoff
- 2024-05-31
Performance
Median streaming throughput and first-token latency measured by Artificial Analysis.
- Output tokens / sec
- —
- Time to first token
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