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OpenAI
OpenAI

Chatgpt OSS 20B

Updated: August 2026

Efficient open-source GPT for general tasks.

Specifications

Context
131K
Input Modalities
Text, File
Output Modalities
Text
Input
$0.03/M
Output
$0.13/M

Capabilities

THINKINGWRITING

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Performance Metrics

Intelligence Index

01

15.2

> 26% OF MODELS

Coding Index

02

20.7

> 22% OF MODELS

Agentic Index

03

3.1

> 19% OF MODELS

Average Response Performance

Output Speed
136.1 tok/s
Time To First Token
0.98s
Time To First Answer Token
15.67s
End To End Response Time
19.35s

DATA SOURCE: Artificial Analysis

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