gpt-oss-20b

Name: gpt-oss-20b
Author: Vercel AI Gateway

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

131K

Input price

$0.07/1M tokens

Output price

$0.3/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Details

ProviderVercel AI Gateway

CreatorOpenAI

Familygpt-oss

Licenseapache-2.0

Statusactive

Typechat

Input modalitiestext

Output modalitiestext

Open weightYes

Parameters20B

Architecture—

Context window131K tokens

Max input—

Max output131K tokens

Reasoning tokensYes

Knowledge cutoff2024-06

Release date—

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$0.07

Output

$0.3

Cache write

—

Cache read

—

Batch in

—

Batch out

—

Family Comparison: gpt-oss

Model	Caps	Perf	Speed	Context	Max out	Pricing
gpt-oss-20b	RTJJMSB	—	—	131K	131K	$0.07$0.3
gpt-oss-safeguard-20b	RTS	—	—	131K	—	$0.07$0.3
gpt-oss-safeguard-120b	RTS	—	—	128K	—	$0.15$0.6
gpt-oss-120b	RTJJMSB	—	—	131K	131K	$0.35$0.75

API

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