GPT-OSS 120B API
About
Build advanced reasoning agents with GPT-OSS 120B, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.09/1M input and $0.36/1M output tokens, open weights architecture. Access GPT-OSS 120B via the Merge Gateway API with up to 33K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
No
Tool Use
No
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
131K
Tokens
Input Limit
131K
Tokens
Max Output
33K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.09
Output
$0.36
Frequently Asked Questions
GPT-OSS 120B by Merge Gateway costs $0.09 per 1M input tokens and $0.36 per 1M output tokens.
Model Details
API Integration
NPM Package
merge-gateway-ai-sdk-provider
Environment Variables
MERGE_GATEWAY_API_KEY
API Base URL
https://api-gateway.merge.dev/v1/ai-sdk