OpenAI: gpt-oss-20b API
gpt-oss-20b is our medium-sized open-weight model for low latency, local, or specialized use-cases (21B parameters with 3.6B active parameters). Download gpt-oss-20b on HuggingFace. Key features Permissive Apache 2.0 license: Build freely without copyleft restrictions or patent risk—ideal for experimentation, customization, and commercial deployment. Configurable reasoning effort: Easily adjust the reasoning effort (low, medium, high) based on your specific use case and latency needs. Full chain-of-thought: Gain complete access to the model's reasoning process, facilitating easier debugging and increased trust in outputs. Fine-tunable: Fully customize models to your specific use case through parameter fine-tuning. Agentic capabilities: Use the models' native capabilities for function calling, web browsing, Python code execution, and structured outputs.
- Context window: 131,072 tokens
- Max output: 131,072 tokens
- Input: text
- Output: text
- Tool calling: Supported
- Knowledge cutoff: 2024-06-30
Frequently Asked Questions
What is the context window of gpt-oss-20b?
gpt-oss-20b supports a context window of up to 131,072 tokens.
Does gpt-oss-20b support function calling?
Yes. gpt-oss-20b supports tool / function calling.
What is the knowledge cutoff of gpt-oss-20b?
The knowledge cutoff of gpt-oss-20b is 2024-06-30.