GPT OSS 120B by NanoGPT — Specs, Pricing & Capabilities | whichllm

Model ID openai/gpt-oss-120b

Provider NanoGPT

Family gpt-oss

Status -

Knowledge Cutoff -

Release Date 2025-08-05

Input Modalities text

Output Modalities text

Context Window 128000

Input Limit 128000

Output Limit 16384

Tool Calling Yes

Reasoning Yes

Structured Output Yes

Temperature Control -

Open Weights No

Input Cost / 1M tokens $0.05

Output Cost / 1M tokens $0.25

Reasoning Cost / 1M tokens -

Cache Read Cost / 1M tokens -

Cache Write Cost / 1M tokens -