Vertex AI · Model retirement
gpt-oss-20b-maas
Stopped working
Calls to the model gpt-oss-20b-maas on Vertex AI stopped working on October 21, 2026.
What to use instead of gpt-oss-20b-maas
Recommended by Google: Self-deploy GPT OSS on Model Garden.
Facts
- API
- Vertex AI
aiplatform.googleapis.com - Model
gpt-oss-20b-maas- Kind
- Model retirement
- Announced
- July 21, 2026
- Takes effect
- October 21, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
gpt-oss-20b-maas on other APIs
- Vertex AI Deprecated, no date
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