OpenAI: GPT-5 Nano
openai/gpt-5-nanoGPT-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.
- Modalities
- TextImageFiletoText
- In / out price
- $0.05 / $0.40per 1M
- Context
- 400K
- Released
- Aug 8, 2025
Providers
RedPill routes this model across providers with automatic fallbacks. Pricing is unified, so you pay the same price no matter which provider serves your request, while live metrics show first-token latency, speed, and uptime.
| openai | Checking | Checking | Checking |
Start building
Call this model from your application, or through your agents.
For applications
Point your OpenAI SDK at the Gateway. Chat, completions, and embeddings work unchanged.
For agents
Connect Claude Code, Codex, Pi, and more through Private AI Proxy. Traffic is protected while a verified session is active.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.redpill.ai/v1",
apiKey: process.env.REDPILL_API_KEY,
});
const response = await client.chat.completions.create({
model: "openai/gpt-5-nano",
messages: [{ role: "user", content: "Say hello." }],
});