GPT OSS 120B Low is an AI model from OpenAI. A low reasoning-effort configuration of the 120B open-weights GPT model for faster, cost-efficient inference on reasoning tasks.
Specifications
Canonical IDopenai-gpt-oss-120b-low
StatusActive
CreatorOpenAIOpenAI
Benchmarks
Intelligence Index
24.5
#178
Coding Index
15.5
#220
Math Index
66.7
#96
MMLU-Pro
0.8
#138
GPQA
0.7
#208
HLE
0.1
#262
LiveCodeBench
0.7
#60
IFBench
0.6
#100
Time to First Token
0.48s
#243
SciCode
0.4
#156
AIME 2025
0.7
#96
LCR
0.4
#157
TerminalBench Hard
0.1
#245
TAU2
0.5
#178
Output TPS

Capabilities

Input0/5
Text·
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-5.51.1M$5.00$30.00Available
GPT-5.4 Mini1.1M$0.750$4.50Available
GPT-5.4 Nano1.1M$0.200$1.25Available
GPT-5.41.1M$2.50$15.00Available
GPT-5.3 Codex400K$1.75$14.00Available
GPT-5.2 Codex400K$1.75$14.00Available
GPT-5.2410K$1.75$14.00Available
GPT-5.1410K$1.25$10.00Available
GPT-5.1 Codex400K$1.25$10.00Available
GPT-5.1 Codex Mini400K$0.250$2.00Available
GPT OSS 120B LowCurrent

Model IDs