GPT OSS 20B

apache-2.020B

`gpt-oss-20b` is our medium-sized open-weight model for low latency, local, or specialized use-cases (21B parameters with 3.6B active parameters).

Intelligence
Reasoning
Speed
Context
131K
Max output
66K
Input price
$0.08/1M tokens
Output price
$0.3/1M tokens

Capabilities

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

Details

Model IDopenai/gpt-oss-20b
Provider Groq
Creator OpenAI
Familygpt-oss
Licenseapache-2.0
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters20B
Architecture—
Context window131K tokens
Max input—
Max output66K tokens
Reasoning tokensYes
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.08
Output
$0.3
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gpt-oss

ModelContextMax outPricing
GPT OSS 20B131K66K$0.08$0.3
Safety GPT OSS 20B131K66K$0.08$0.3
GPT OSS 120B131K66K$0.15$0.6

API

GET/v1/models/groq/openai/gpt-oss-20b