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GPT OSS 120B MaaS


GPT OSS 120B MaaS is OpenAI logoOpenAI's language model with a 131K context window and up to 33K output tokens. A Model-as-a-Service deployment of the GPT OSS 120B open-weight model, providing managed access to the 117B MoE architecture for enterprise workloads.
Spec
Canonical IDopenai-gpt-oss-120b-maas
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Context Window131K tokens
Max Output33K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Parameters120B

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities2/13
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

ProviderStandardBatch
Input
$ / 1M
Output
$ / 1M
Input
$ / 1M
Output
$ / 1M
Google Vertex AI logo
Google Vertex AI
$0.090$0.360$0.045$0.180

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
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-5.4 Pro1.1M$30.00$180.00Available
GPT-5.4 3.51.1MAvailable
GPT-5.4 Pro 3.51.1MAvailable
GPT-5.3 Chat128K$1.75$14.00Available
GPT-5.3 Codex400K$1.75$14.00Available
GPT-5.3 Codex Spark128KAvailable
GPT-5.3 Instant128KAvailable
GPT OSS 120B MaaS131KCurrent

Model IDs