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OpenAI launches open-source AI models

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Months after the announcement, OpenAI has finally launched its very first set of open-source models named gpt-oss-20b and gpt-oss-120b which can run even on a laptop.

OpenAI claims these models to perform at the level of the o4-mini models, which is crazy good. In fact, you can play with the models on the gpt-oss playground, for free.

Basically, the different models are categorized as:

  1. gpt-oss-20b: A medium-sized open model that can run on most desktops and laptops.
    • runs via Ollama by running ollama run gpt-oss:20b command
  2. gpt-oss-120b: A large open model designed to run in data centers and on high-end desktops and laptops.
    • runs via Ollama by running ollama run gpt-oss:120b command

You can find the actual model cards here that will give you more info about the models.

I tried downloading and running the 20b model which is about 13 GB in size, it should run slow on my laptop (Macbook Air M2 with 16GB RAM), but I wasn't able to run it due to the following error:

Error: template: :3: function "currentDate" not defined

Not sure what the issue is, but I have tweeted about it. Let's see if I find some solutions from here.

Update: Aug 6, 2025

I reinstalled Ollama and it worked, as suggested by Ollama itself in this reply on my post on X. Yes, it was a known issue from the Ollama side, and they quickly fixed this.

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