OpenAI: gpt-oss-120b

apache-2.0120B

`gpt-oss-120b`is our most powerful open-weight model, which fits into a single H100 GPU (117B parameters with 5.1B active parameters).

Intelligence
Reasoning
Speed
Context
131K
Max output
131K
Input price
$0.04/1M tokens
Output price
$0.19/1M tokens

Capabilities

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

Details

Model IDopenai/gpt-oss-120b
Provider Cloudflare AI Gateway
Creator OpenAI
Familygpt-oss
Licenseapache-2.0
Statusactive
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters120B
Architecture—
Context window131K tokens
Max input—
Max output131K tokens
Reasoning tokensYes
Knowledge cutoff
Release date—
Sourceofficial

Pricing

Input
$0.04
Output
$0.19
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gpt-oss

ModelContextMax outPricing
OpenAI: gpt-oss-20b:free———
OpenRouter: openai/gpt-oss-120b:free———
OpenRouter: openai/gpt-oss-20b:free———
OpenAI: gpt-oss-20b131K131K$0.03$0.14
OpenRouter: openai/gpt-oss-20b——$0.03$0.14
OpenAI: gpt-oss-120b131K131K$0.04$0.19
OpenRouter: openai/gpt-oss-120b——$0.04$0.19
OpenAI: gpt-oss-120b:exacto——$0.05$0.24
OpenRouter: openai/gpt-oss-120b:exacto——$0.05$0.24
Google Vertex AI: openai/gpt-oss-20b-maas——$0.07$0.25
Groq: openai/gpt-oss-20b——$0.08$0.3
OpenAI: gpt-oss-safeguard-20b——$0.08$0.3
OpenRouter: openai/gpt-oss-safeguard-20b——$0.08$0.3
Google Vertex AI: openai/gpt-oss-120b-maas——$0.09$0.36
Baseten: openai/gpt-oss-120b——$0.1$0.5
Groq: openai/gpt-oss-120b——$0.15$0.6
Cerebras: gpt-oss-120b——$0.25$0.69
cerebras: gpt-oss-120b——$0.25$0.69

API

GET/v1/models/cloudflare-ai-gateway/openai/gpt-oss-120b