OpenAI GPT OSS 120B

apache-2.0120B

gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases.

Intelligence
Reasoning
Speed
Context
131K
Max output
33K
Input price
$0.05/1M tokens
Output price
$0.25/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDopenai/gpt-oss-120b
Provider Novita AI
Creator OpenAI
Familygpt-oss
Licenseapache-2.0
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters120B
Architecture—
Context window131K tokens
Max input—
Max output33K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.novita.ai/v3/openai/v1/chat/completions

Pricing

Input
$0.05
Output
$0.25
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gpt-oss

ModelContextMax outPricing
OpenAI GPT OSS 20B131K33K$0.04$0.15
OpenAI GPT OSS 120B131K33K$0.05$0.25

API

GET/v1/models/novita/openai/gpt-oss-120b