Evidence record / antigravity
A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.
2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-oss
Model access changed by tier between 2 and 3 October; the remaining Claude 4.6 and GPT-OSS-120b retire on 2026-11-02. Between 2 and 3 October the models page added Claude Sonnet 5.5 and Opus 5.5 for non-trial Google AI Pro and Ultra, removed Ultra access to Sonnet 4.6 and Opus 4.6, and scheduled the remaining 4.6 models and GPT-OSS-120b for removal on 2 November 2026. Free and Google AI Plus have no 5.5 access; after the scheduled removals their listed reasoning-model choices are Gemini only. Enterprise never had 4.6 or GPT-OSS access in the checked captures and gained administrator-enabled 5.5 separately (section 13). Model lifecycle is outside the CLI changelog; announcement cards are a service-notice channel, not evidence that a particular CLI run can select a model. The headless docs say an unknown model exits non-zero with an ERROR status rather than falling back.
Channel: docs-only; service catalog and entitlements, not a CLI release. Half: both. Date: 2026-10-02..2026-10-03 (models-page change); Enterprise access added 2026-10-09..2026-10-10; posture retrieved 2026-10-13.
Operator consequence: Ultra users with 4.6 pins need a replacement already, not on 2 November. For remaining eligible tiers, replace 4.6 and GPT-OSS pins before 2 November and test under the actual account: Free and AI Plus must move to Gemini among the listed choices, while non-trial Pro and Ultra can consider Claude 5.5. Enterprise administrators must enable partner models and accept token billing. The documented CLI replacements are claude-opus-5-5-<level> and claude-sonnet-5-5-<level> with low, medium (default), high or max; --effort needs 1.2.11 or later. Keep agy models as the account-specific check. A fixed CLI binary does not pin the service catalog.
Receipt
- https://web.archive.org/web/20261002022157/https://www.antigravity.google/docs/models/
- https://web.archive.org/web/20261003070147/https://antigravity.google/docs/models
- https://web.archive.org/web/20261007130653id_/https://antigravity.google/docs/models.md
- https://antigravity.google/docs/models.md
- https://web.archive.org/web/20261010095514/https://antigravity.google/docs/enterprise/?hl=de
- https://github.com/google-antigravity/antigravity-cli/blob/1.2.17/CHANGELOG.md?plain=1#L9
- https://github.com/google-antigravity/antigravity-cli/blob/1.3.4/CHANGELOG.md?plain=1#L12
- https://web.archive.org/web/20261003090204id_/https://antigravity.google/docs/cli/headless.md
Finding metadata
Run: 2026-10-13-profile-refresh-2026-09-21_2026-10-13-frontier-v0
Finding ID: 2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-oss
Profile citations
- Antigravity CLI / claim / tiered-model-retirement
Source links
Primary links, including exact changelog lines when available.
- official docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossweb.archive.org/web/20261002022157/https://www.antigravity.google/docs/models/official docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossweb.archive.org/web/20261003070147/https://antigravity.google/docs/modelsofficial docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossweb.archive.org/web/20261007130653id_/https://antigravity.google/docs/models.mdofficial docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossantigravity.google/docs/models.mdofficial docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossweb.archive.org/web/20261010095514/https://antigravity.google/docs/enterprise/tagged commit file2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossgoogle-antigravity/antigravity-cli / CHANGELOG.md#L9tagged commit file2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossgoogle-antigravity/antigravity-cli / CHANGELOG.md#L12official docs2026-10-13-antigravity-model-access-changed-by-tier-between-2-and-3-october-the-remaining-claude-4-6-and-gpt-ossweb.archive.org/web/20261003090204id_/https://antigravity.google/docs/cli/headless.md
Versioned source: run artifact