OpenAI: gpt-oss-20b (free)
OpenAIfreeproenterprise
openai/gpt-oss-20b:freeDescription
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Specifications
Context Window
131,072
tokens
Max Completion Tokens
32,768
tokens
Input Modalities
text
Output Modalities
text
Supported Parameters
frequency_penaltyinclude_reasoningmax_tokensmin_ppresence_penaltyreasoningrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_atop_ktop_p
Pricing
| Price Type | Rate | Unit |
|---|---|---|
| Input (Prompt) | Free | per 1M tokens |
| Output (Completion) | Free | per 1M tokens |
Tier Availability
Free
✓ Available
Pro
✓ Available
Enterprise
✓ Available