GPT-OSS 20B

A 21-billion-parameter open-weight model from OpenAI, designed for efficient reasoning and long-context usage (≈ 128K tokens).

Model Details

Provider

OpenAI

Model Type

text

Context Window

128,000 tokens

Pricing

Input (1M)$0.00
Output (1M)$0.00

Capabilities

  • Open-weight / Apache 2.0 licensed: you can use, modify, and deploy freely (commercially & academically) under permissive terms.
  • Large model size (≈ 21B parameters) with Mixture-of-Experts (MoE) architecture: only ~3.6B parameters active per token, yielding efficient inference. :contentReference[oaicite:1]{index=1}
  • Very long context window support: up to ~128 K tokens (or ~131 K tokens per some sources) enabling in-depth reasoning, long documents, or multi-turn context. :contentReference[oaicite:2]{index=2}
  • Adjustable reasoning effort: you can trade latency vs quality by tuning “reasoning effort” levels. :contentReference[oaicite:3]{index=3}
  • Efficient hardware requirements (for its class): designed to run on a single 16 GB-class GPU or optimized local deployments for lower latency applications. :contentReference[oaicite:4]{index=4}
  • Strong for tasks such as reasoning, tool-use, structured output, chain-of-thought debugging: because the model is open and you can inspect its chain of thought. :contentReference[oaicite:5]{index=5}
  • Flexibility: since weights are available, you can self-host, fine-tune, or deploy offline, giving more control than closed API models. :contentReference[oaicite:6]{index=6}

Turn your AI ideas into tools that are powered by GPT-OSS 20B

Appaca is a complete platform for building AI agents, automations, and customer-facing interfaces for GPT-OSS 20B apps. No coding required.

Customer-facing Interface

Customer-facing Interface

Create and style user interfaces for your AI agents and tools easily according to your brand.

Multimodel LLMs

Multimodel LLMs

Create, manage, and deploy custom AI models for text, image, and audio - trained on your own knowledge base.

Agentic workflows and integrations

Agentic workflows and integrations

Create a workflow for your AI agents and tools to perform tasks and integrations with third-party services.

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All you need to launch and sell your GPT-OSS 20B powered AI tools

Appaca provides out-of-the-box solutions your AI apps need.

Monetize your AI

Sell your AI agents and tools as a complete product with subscription and AI credits billing. Generate revenue for your busienss.

Monetize your AI
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“I've built with various AI tools and have found Appaca to be the most efficient and user-friendly solution.”

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Cheyanne Carter

Founder & CEO, Edubuddy

Frequently Asked Questions

We are here to help!

What is Appaca?
Appaca is a no-code platform for creating end-user AI agents and tools that you can monetize. It allows you to deliver AI solutions to your customers faster without requiring developer help.
What are AI Credits?
AI credits are the currency to bill AI usage. Appaca uses that AI credit for the usage of different large language models (LLMs). You can use any LLM from different providers. For the cost of AI credit for different AI models, please see our pricing page.
Can I make money with the app I built on Appaca?
Yes, you can monetize your AI app easily. All you need to do is to enable monetization in your app with one click. You will be prompted to set up Stripe account easily. Once you have enabled your monetization, you can create subscription plans for your app. For the usage of AI, our AI credit system allows you to bill your customers. You can simply set how much credit you want to charge for your customers. It all comes out of the box.
Can I get more credits?
Absolutely. You can top up AI credits as much as you want if your credits are low.
Can I connect my custom domain to my app?
Yes, you can use your own custom domain name as long as you are on any paid plan.
Are there integrations?
Yes. You can integrate with other third-party tools via API or Webhook in your action workflows builder. We are frequently shipping native integration as well.
How do I use GPT-OSS 20B for Appaca app?
You can select GPT-OSS 20B when you are creating a custom AI model. If you could not find the right model, you can always contact our support team to get help.
Does it cost to use GPT-OSS 20B for Appaca app?
Yes, it cost AI credits to use GPT-OSS 20B for Appaca app. We do not charge for model specifically. We charge based on the type of AI model, for example: text, image, voice, etc. For the cost of AI credit for different AI models, please see our pricing page.
Do I need an API key to use GPT-OSS 20B on Appaca?
No, you don't need an API key to use GPT-OSS 20B on Appaca. Appaca provides an easy, one-click solution for you to use GPT-OSS 20B for your app.