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gpt-oss-120b

gpt-oss-120b
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OpenAI's larger open-weight mixture-of-experts model, 117B parameters with 5.1B active. Reasoning effort and native tool use are both configurable, and sparse activation makes it a good match for a processor sized to the model.

Input
Text
Context window
131K tokens
Precision
4 bits
Price per 1M tokens
$0.095 in · $0.395 out · $0.04 cached
Integration
OpenAI-compatible API
ReasoningConfigurable effortMoE

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API documentation ↗

Client Libraries

curl https://api.elastix.ai/v1/chat/completions \
  -H "Authorization: Bearer $ELASTIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-oss-120b",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'