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GPT OSS 20B


GPT OSS 20B is OpenAI's language model with a 131K context window and up to 131K output tokens, available from 15 providers, starting at $0.030 / 1M input and $0.140 / 1M output. A 20-billion-parameter open-weights GPT model from OpenAI suited for reasoning and tool-use tasks at a smaller, more efficient scale.
Specifications
Canonical IDopenai-gpt-oss-20b
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Context Window131K tokens
Max Output131K tokens
Input ModalitiesImageText
Output ModalitiesText
Reasoning Effortsdefault
Parameters20B
HuggingFace Likes4,552
HuggingFace Downloads (30d)6,455,272
HuggingFace Downloads (all-time)59,707,566
Release Date · 9 months ago
Knowledge Cutoff
Benchmarks
Intelligence Index
24.5
#175
Coding Index
18.5
#186
Math Index
89.3
#30
MMLU-Pro
0.7
#167
GPQA
0.7
#190
HLE
0.1
#136
LiveCodeBench
0.8
#34
IFBench
0.7
#76
Time to First Token
0.43s
#228
SciCode
0.3
#176
AIME 2025
0.9
#30
LCR
0.3
#200
TerminalBench Hard
0.1
#188
TAU2
0.6
#143
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
deepinfra/openai/gpt-oss-20b
$0.040$0.150N/AN/A
Novita logo
Novita
novita/openai/gpt-oss-20b
$0.040$0.150N/AN/A
OVHcloud logo
OVHcloud
ovhcloud/gpt-oss-20b
$0.040$0.150N/AN/A
Fireworks AI logo
Fireworks AI
fireworks_ai/accounts/fireworks/models/gpt-oss-20b
$0.050$0.200N/AN/A
Hugging Face logo
Hugging Face
together_ai:openai/gpt-oss-20b
$0.050$0.200N/AN/A
Together AI logo
Together AI
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/databricks-gpt-oss-20b
$0.070$0.300N/AN/A
Google Gemini logo
Google Gemini
gpt-oss-20b-maas
$0.070$0.250N/A$0.0070$0.035$0.125
Google Vertex AI logo
Google Vertex AI
gpt-oss-20b-maas
$0.075$0.300N/A$0.0070$0.035$0.125
Groq logo
Groq
groq/openai/gpt-oss-20b
$0.075$0.300$0.037N/A
Replicate logo
Replicate
replicateopenai/gpt-oss-20b
$0.090$0.360N/AN/A
Other/Wandb
wandb/openai/gpt-oss-20b
$5.00$20.00N/AN/A
Provider-specific pricing that varies by region.
Amazon Bedrock logo
Amazon Bedrock
16 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
GovCloud (US-East)/ us-gov-east-1$0.084$0.360$0.042$0.180$0.042$0.180$0.147$0.630
GovCloud (US-West)/ us-gov-west-1$0.084$0.360$0.042$0.180$0.042$0.180$0.147$0.630
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$0.180Available

Model IDs