gpt-oss-20b
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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 lower-latency inference and deployability on consumer or single-GPU hardware. The model is trained in OpenAI’s Harmony response format and supports reasoning level configuration, fine-tuning, and agentic capabilities including function calling, tool use, and structured outputs.
Input:$0.05 / 1M tokens
Output:$0.2 / 1M tokens
Context:131072 tokens
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programming#10
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Model Parameters
16 availablefrequency_penalty
-202
include_reasoning
logit_bias
logprobs
max_tokens
presence_penalty
-201.999
repetition_penalty
012
response_format
stop
structured_outputs
temperature
012
tool_choice
tools
top_k
top_logprobs
top_p
011
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