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Open-Weight Model Families · 2025

gpt-oss-120b & gpt-oss-20b Model Card

OpenAI

Primary source

OpenAI's first open-weight language models since GPT-2 (2019): two MoE reasoning models (120b runs on one 80GB GPU, 20b on 16GB) released under Apache 2.0.

Editorial record

Plain-language summary

OpenAI's first open-weight language models since GPT-2 (2019): two MoE reasoning models (120b runs on one 80GB GPU, 20b on 16GB) released under Apache 2.0.

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Descendants

  • Depends onEvidence: Strongly supported

    Attention Is All You Need

    Builds on the open weight family lineage in the archive

    freshness sweep 2026

Source record

Provenance

Record ID
P-629
Record created
2026-07-13
Last reviewed
2026-07-14
Record version
2

Citation caveat: Citation metadata is approximate and marked unverified in the source dataset.