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

vision
tool call
structured output
reasoning
json mode
streaming
fine tuning
batch

Details

Model IDopenai/gpt-oss-120b
Provider Novita AI
Creator OpenAI
Familygpt-oss
Licenseapache-2.0
Parameters120B
Statusactive
Input modalitiestext
Output modalitiestext
Architecture—
Knowledge cutoff
Training data cutoff—
Release date
Deprecation date—
Typechat
Reasoning tokensYes
Max input—
Open weightYes
Sourceofficial
Last updated

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
—

Price across providers

ProviderInputOutputSince launch
DeepInfracheapest$0.04$0.17↓5%
OpenRoutercheapest$0.04$0.17↓5%
Cloudflare AI Gateway$0.04$0.19—
Novita AI$0.05$0.25—
Groq$0.15$0.6—
SambaNova Cloud$0.22$0.59—
Cerebras$0.35$0.75—
Vercel AI Gateway$0.35$0.75—

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