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NanoGPT

GPT OSS 120B API

NanoGPT
About

Build advanced reasoning agents with GPT OSS 120B, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.05/1M input and $0.25/1M output tokens, native tool calling support. Access GPT OSS 120B via the NanoGPT API with up to 16K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
128K

Tokens

Input Limit
128K

Tokens

Max Output
16K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.05
Output
$0.25
Frequently Asked Questions

GPT OSS 120B by NanoGPT costs $0.05 per 1M input tokens and $0.25 per 1M output tokens.

Model Details
ID
openai/gpt-oss-120b
Provider
NanoGPT
Family
gpt-oss
Release Date
Aug 5, 2025
Knowledge Cutoff
Oct 1, 2024
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NANO_GPT_API_KEY
API Base URL
https://nano-gpt.com/api/v1
Documentation