OpenAI: GPT-5.4 Nano API
About
Build advanced reasoning agents with OpenAI: GPT-5.4 Nano, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.20/1M input and $1.25/1M output tokens, native tool calling support. Access OpenAI: GPT-5.4 Nano via the Kilo Gateway API with up to 128K output tokens.
Capabilities
Input Modalities
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Output Modalities
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Limits
Context Window
400K
Tokens
Input Limit
400K
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.20
Output
$1.25
Caching (per 1M tokens)
Read
$0.02
Frequently Asked Questions
OpenAI: GPT-5.4 Nano by Kilo Gateway costs $0.20 per 1M input tokens and $1.25 per 1M output tokens. Cached reads cost $0.02 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
KILO_API_KEY
API Base URL
https://api.kilo.ai/api/gateway