Openai
OpenAI: GPT-5 Nano
Symphonietta
Symphony
FAST
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 Price
1 credits/M
per million tokens
Output Price
8 credits/M
per million tokens
Context Window
400,000
tokens
Capabilities
Input
TEXT-AND-IMAGE
Output
TEXT