GPT-OSS 20B
A 21-billion-parameter open-weight model from OpenAI, designed for efficient reasoning and long-context usage (≈ 128K tokens).
GPT-OSS 20B at a glance
Context window
128K tokens
Input price
Free
open weight
Output price
Free
open weight
Why use GPT-OSS 20B
Strengths, benchmarks, and where GPT-OSS 20B fits in your team's workflow.
- 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.
- 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.
- Adjustable reasoning effort: you can trade latency vs quality by tuning “reasoning effort” levels.
- Efficient hardware requirements (for its class): designed to run on a single 16 GB-class GPU or optimized local deployments for lower latency applications.
- 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.
- Flexibility: since weights are available, you can self-host, fine-tune, or deploy offline, giving more control than closed API models.
Power your team with GPT-OSS 20B
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-OSS 20B - connected to your real data and ready for your whole team. No code, no deployment.
Build internal AI tools
Describe what you need and the Appaca agent builds it - lead scorers, report generators, email drafters - with GPT-OSS 20B as the engine. No code, no deployment.
Give GPT-OSS 20B your real data
Connect the tools your team already uses - Slack, Notion, Google Sheets, Airtable, and more - so GPT-OSS 20B works with real context, not generic answers.
Automate recurring tasks
Schedule GPT-OSS 20B to run on autopilot - daily digests, weekly summaries, or real-time triggers - all managed inside your Appaca workspace.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-OSS 20B - connected to the tools you already use.
Where teams use GPT-OSS 20B
See how teams put GPT-OSS 20B to work inside Appaca - internal tools and AI agents that work around you.
Sales
Score leads, draft follow-ups, and summarise deals with GPT-OSS 20B doing the heavy lifting.
Explore Appaca for SalesMarketing
Draft, repurpose, and report on campaigns in your brand voice - powered by GPT-OSS 20B.
Explore Appaca for MarketingOperations
Automate reporting, vendor tracking, and process docs with AI built around your workflow.
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Build internal AI tools with GPT-OSS 20B
Describe the tool your team needs and get a working app powered by GPT-OSS 20B - with a built-in database, team access, and integrations. No code, no deployment.