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GPT-OSS 120B

OpenAI’s open-weight flagship, strong and open

OpenAI · text model

OpenAImaker
Standardin the default router pool
Copy + scriptshooks, captions, briefs, storyboards

GPT-OSS 120B is one of 22 text models Hermoso can write ad copy, hooks and scripts with. Name it, or leave the model out and the router picks a sound default. The same catalog is available from the app, the MCP server and the CLI, on one account and one credit balance; the exact price of every render is shown in the app before it runs.

What people make with it

The linked formats are creative recipes Hermoso plans and renders for your brand.

About OpenAI

OpenAI makes the GPT Image line, the strongest models at rendering legible text inside an image, and the GPT text models.

Specs

Best forOpenAI’s open-weight flagship, strong and open
TierStandard
Model idgpt-oss-120b

GPT-OSS 120B compared with other text models

ModelMakerTierBest for
GPT-OSS 120BOpenAIStandardOpenAI’s open-weight flagship, strong and open
GPT-5 MiniOpenAIStandardFast + cheap OpenAI
GPT-6 AstraOpenAIPremiumOpenAI’s most capable, for long-horizon work with a 1M context
GPT-5OpenAIStandardOpenAI’s flagship: broad and reliable
DeepSeek V3.1DeepSeekStandardOpen frontier model with strong reasoning at great value
Gemini 3.1 Flash-LiteGoogleStandardCheapest current-gen Gemini text
DeepSeek R1DeepSeekStandardOpen reasoning model that works through problems step by step

See all 22 text models side by side.

Just ask for it

In Claude, ChatGPT, Cursor or any assistant connected to Hermoso, name the model in plain English. Or pick it from the model menu in the app.

Write five TikTok hooks for our olive oil with GPT-OSS 120B.
Use GPT-OSS 120B to script a 15 second testimonial, then render it.
Have GPT-OSS 120B rewrite this caption for LinkedIn, Instagram and X.

Getting the best out of GPT-OSS 120B

  • Give the platform, the length and the count: five nine-word TikTok hooks.
  • Paste the product page or a real review. Specifics beat adjectives.
  • Ask for variants on one angle at a time (price, speed, proof) so each can be tested cleanly.
  • List the words you never want to see. A blocklist is respected.

Write ad copy with GPT-OSS 120B. Start free, and every feature is on every plan.

Start free →   See pricing

Frequently asked questions

What is GPT-OSS 120B used for in Hermoso?

OpenAI’s open-weight flagship, strong and open. It writes hooks, captions, scripts and briefs, and can drive the agent loop that plans a whole ad.

Is GPT-OSS 120B the default?

It is in the default pool. Name it to force it, or leave the model out and the router chooses.

Related text models

Other OpenAI models first, then the text models listed nearest to GPT-OSS 120B in the catalog.

GPT-5 Mini

Fast + cheap OpenAI

GPT-6 Astra

OpenAI’s most capable, for long-horizon work with a 1M context

GPT-5

OpenAI’s flagship: broad and reliable

DeepSeek V3.1

Open frontier model with strong reasoning at great value

Gemini 3.1 Flash-Lite

Cheapest current-gen Gemini text

DeepSeek R1

Open reasoning model that works through problems step by step

Gemini 3.5 Flash-Lite

Cost-optimized Google workhorse

Llama 4 Maverick

Meta’s open flagship

See all 22 text models or every model Hermoso offers.