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OpenAI: gpt-oss-120b

openai/gpt-oss-120b

For $1, you can send approximately:
~794messages

How do we get this number?

One message = ~7,000 input tokens + ~7,000 output tokens
Input cost per message7,000 x $0.03/M = $0.000210
Output cost per message7,000 x $0.15/M = $0.001050
Total cost per message$0.001260
Messages for $1793.65
Context window
131k
tokens
Max response
131k
tokens
Input price
$0.03
per million tokens
Output price
$0.15
per million tokens

Modalities

Input:textOutput:text

Description

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. It activates 5.1B parameters per forward pass and is optimized...