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GPT OSS 20B


GPT OSS 20B is OpenAI logoOpenAI's language model with a 131K context window and up to 131K output tokens, available from 13 providers, starting at $0.030 / 1M input and $0.140 / 1M output. OpenAI's medium-sized open-weight MoE language model with 21B parameters and 3.6B active parameters, suited for low-latency, local, or specialized deployments.
Spec
Canonical IDopenai-gpt-oss-20b
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Context Window131K tokens
Max Output131K tokens
Input ModalitiesImageText
Output ModalitiesText
Reasoning Effortsdefault
Parameters20B
Release Date · 9 months ago
Knowledge Cutoff
Intelligence Index
20.8
#124
Coding Index
14.4
#141
Math Index
62.3
#62
MMLU-Pro
0.7
#135
GPQA
0.6
#151
HLE
0.1
#170
LiveCodeBench
0.7
#54
IFBench
0.6
#37
Time to First Token
0.40s
#159
SciCode
0.3
#105
AIME 2025
0.6
#62
LCR
0.3
#112
TerminalBench Hard
0.0
#159
TAU2
0.5
#83
Output TPS

Capabilities

Input2/5
Text
Image
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities6/13
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·

Pricing by Provider

ProviderStandardBatchFlexPriority
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Cache Write
$ / 1M
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
OpenRouter logo
OpenRouter
openai/gpt-oss-20b
$0.030$0.140N/AN/A
DeepInfra logo
DeepInfra
openai/gpt-oss-20b
$0.040$0.150N/AN/A
Novita logo
Novita
openai/gpt-oss-20b
$0.040$0.150N/AN/A
Fireworks AI logo
Fireworks AI
accounts/fireworks/models/gpt-oss-20b
$0.050$0.200N/AN/A
OVHcloud logo
OVHcloud
gpt-oss-20b
$0.050$0.180N/AN/A
Together AI logo
Together AI
openai/gpt-oss-20b
$0.050$0.200N/AN/A
Vercel AI Gateway logo
Vercel AI Gateway
openai/gpt-oss-20b
$0.050$0.200N/AN/A
Amazon Bedrock logo
Amazon Bedrock
openai.gpt-oss-20b-1:0
$0.070$0.300N/AN/A$0.035$0.150$0.035$0.150$0.122$0.525
Databricks logo
Databricks
databricks-gpt-oss-20b
$0.070$0.300N/AN/A
Google Vertex AI logo
Google Vertex AI
gpt-oss-20b-maas
$0.070$0.250N/A$0.0070$0.035$0.125
Snowflake logo
Snowflake
openai-gpt-oss-20b
$0.080$0.300N/AN/A$0.040$0.150
Replicate logo
Replicate
replicateopenai/gpt-oss-20b
$0.090$0.360N/AN/A
Groq logo
Groq
openai/gpt-oss-20b
$0.100$0.500$0.037N/A

Regional pricing

Provider-specific pricing that varies by region.
Amazon Bedrock logo
Amazon Bedrock
14 regions
RegionStandardBatchFlexPriority
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Global
Global$0.070$0.300$0.035$0.150$0.035$0.150$0.122$0.525
Asia Pacific
Asia Pacific (Jakarta)/ ap-southeast-3$0.070$0.310$0.040$0.160$0.035$0.155$0.122$0.542
Asia Pacific (Mumbai)/ ap-south-1$0.080$0.350$0.040$0.180$0.040$0.175$0.140$0.613
Asia Pacific (Sydney)/ ap-southeast-2$0.072$0.309$0.036$0.154$0.036$0.154$0.126$0.541
Asia Pacific (Tokyo)/ ap-northeast-1$0.080$0.360$0.040$0.180$0.040$0.180$0.140$0.630
Europe
Europe (Ireland)/ eu-west-1$0.080$0.350$0.040$0.180$0.040$0.175$0.140$0.613
Europe (London)/ eu-west-2$0.110$0.470$0.050$0.230$0.055$0.235$0.193$0.823
Europe (Frankfurt)/ eu-central-1$0.090$0.400$0.050$0.200$0.045$0.200$0.158$0.700
Europe (Milan)/ eu-south-1$0.090$0.400$0.050$0.200$0.045$0.200$0.158$0.700
Europe (Stockholm)/ eu-north-1$0.070$0.300$0.035$0.150$0.035$0.150$0.122$0.525
South America
South America (São Paulo)/ sa-east-1$0.080$0.360$0.040$0.180$0.040$0.180$0.140$0.630
US
US East (Ohio)/ us-east-2$0.070$0.300$0.035$0.150$0.035$0.150$0.122$0.525
US East (Virginia)/ us-east-1$0.070$0.300$0.035$0.150$0.035$0.150$0.122$0.525
US West (Oregon)/ us-west-2$0.070$0.300$0.035$0.150$0.035$0.150$0.122$0.525

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT OSS 120B Safeguard131K$0.150$0.600Available
GPT OSS 20B Safeguard131K$0.070$0.200Available
GPT OSS 20B131K$0.030$0.140Current
GPT OSS 120B131K$0.039$0.190Available

HuggingFace

4,549 likes6,271,043 downloads/month59,041,939 total downloads

Model IDs