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feat: Gemini 4 Argon + per-account Antigravity lineup (CLI UA for Argon, 4.6/5.5 by account roster) - #7071
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| displayName: "Gemini 4 Argon", | ||
| window: CONTEXT_GEMINI, | ||
| defaultVariant: "regular", | ||
| variants: { regular: { levels: ["low", "medium", "high"] } }, |
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Include Cursor's minimal Argon effort
Cursor's model-specific documentation lists four Argon effort levels—minimal, low, medium, and high—but this capability exposes only the latter three. Because cursorModelEffortLadder filters against this declaration and the matching row in effort-map.ts, Cursor users cannot select the documented minimal tier. Add minimal to both Cursor Argon ladders while keeping the direct Google preset's three-level ladder unchanged. Cursor Gemini 4 Argon documentation
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| // Developer API row: the price IS published for this surface, so `verified`. | ||
| { provider: "google", modelId: "gemini-3.7-flash", cost4: GEMINI_37_FLASH, source: GEMINI_37_PRICING, verifiedAt: "2026-08-14", status: "verified" }, | ||
| { provider: "google", modelId: "gemini-3.8-flash", cost4: GEMINI_38_FLASH, source: GEMINI_38_PRICING, verifiedAt: "2026-09-03", status: "verified" }, | ||
| { provider: "google", modelId: "gemini-4-argon", cost4: GEMINI_4_ARGON, source: GEMINI_4_ARGON_PRICING, verifiedAt: "2026-10-14", status: "verified" }, |
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Add an exact Cursor price overlay for Argon
The new Cursor catalog entry has no matching cursor/gemini-4-argon price row. pricingFamilyProvider("cursor") remains cursor, Cursor has no generated metadata alias, and the Argon metadata intentionally omits cost, so resolveMatchedPrice("cursor", "gemini-4-argon") falls through to null; Cursor Argon usage therefore displays no estimated cost despite Cursor publishing the same $2/$10/$0.10 rates. Add an exact Cursor overlay and a resolver assertion. Cursor Gemini 4 Argon pricing
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @src/usage/expected-prices.ts:
- Around line 91-94: Add date-aware pricing for GEMINI_4_ARGON and the affected
Google and Antigravity pricing rows, selecting the introductory or 2026-12-01
rate by request timestamp so historical usage retains its original estimate.
Reuse the existing CONTEXT_TIERS pattern for the dated rates and update the
relevant overlays to use it.
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docs-site/src/content/docs/guides/providers.mdscripts/model-metadata.source.jsonsrc/adapters/cursor/catalog.tssrc/adapters/cursor/effort-map.tssrc/providers/registry/entries-core.tssrc/usage/expected-prices.tstests/adapters/google/google-hardening.test.tstests/usage/usage-cost.test.ts
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| // Gemini 4 Argon introductory paid-tier rate: $2 in / $10 out (thinking included) / $0.10 cached | ||
| // per 1M through 2026-11-30, stepping up to $4 / $20 / $0.20 on 2026-12-01. Revisit this row | ||
| // then. No free tier. Implicit caching only, so there is no per-token cache-write price. | ||
| const GEMINI_4_ARGON: Cost4 = { input: 2, output: 10, cacheRead: 0.1, cacheWrite: 0 }; |
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📐 Maintainability & Code Quality | 🔵 Trivial
Plan the 2026-12-01 price step.
The new rows hold the introductory rate: input 2, output 10, cacheRead 0.1. GEMINI_4_ARGON_PRICING states that the rate rises to 4/20 (0.20 cached) on 2026-12-01. The overlays have no date-bound field. After that date, the usage cost estimates for google/gemini-4-argon and the Antigravity rows will under-report by about 50%, until someone edits the file. The PR description already lists a follow-up. Track it in an issue so the date is not missed.
One option is to add a dated tier table, like CONTEXT_TIERS, and select the rate by request timestamp. Use this option only if historical usage rows must keep the old rate. A plain rate edit on 2026-12-01 would reprice past usage.jsonl entries.
Also applies to: 207-207, 354-360, 418-418
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Review comment at @src/usage/expected-prices.ts around lines 91 - 94:
Add date-aware pricing for GEMINI_4_ARGON and the affected Google and
Antigravity pricing rows, selecting the introductory or 2026-12-01 rate by
request timestamp so historical usage retains its original estimate. Reuse the
existing CONTEXT_TIERS pattern for the dated rates and update the relevant
overlays to use it.
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Adds gemini-4-argon to the google-antigravity picker with low/medium/high mapped to the verified gemini-4-argon-{low,medium,high} wire ids. CCA serves those ids only to the Antigravity CLI User-Agent, so Argon inference and model discovery use antigravity/cli/1.3.4 while every other model keeps the IDE User-Agent.
… 5.5 and Sonnet 5.5 The static google-antigravity picker now lists gemini-3.8-flash, gemini-4-argon, claude-opus-5-5 and claude-sonnet-5-5. Claude 5.5 gets the same low/medium/high suffix-tier mapping as Argon and 3.8 Flash. Dropped bases (3.7 Flash, 3.1 Pro, 3.1 Flash Image, Claude 4.6, gpt-oss) stay known to routing, discovery collapse and usage identity, so saved selections route unchanged and discovered rows still appear.
… the trimmed lineup Retired 3.5/3.6 Flash selections now migrate to the live gemini-3.8-flash base (registrySeedsTarget refused 3.7 once it left the lineup). Discovery-only family tests use a hypothetical claude-opus-6-1 because Claude 5.5 now has a static ladder. The static catalog count is 4.
Antigravity gates models per account (Claude 4.6 on some accounts, Claude 5.5 suffix families on others, Gemini 4 Argon on Ultra/Enterprise). Discovery now records each account roster; account selection prefers an account whose roster lists the requested model, skips a known non-listing account, and treats a missing roster as unknown. The catalog keeps exposing only the active account discovery, and the static-lineup drop is no longer warned as drift.
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Actionable comments posted: 3
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @docs-site/src/content/docs/guides/providers.md:
- Line 160: Update the account model-discovery guidance to say the picker
follows the account roster only after successful discovery; clarify that
fallback static models may still appear when discovery is unavailable and do not
prove account entitlement.
Review comments at @src/oauth/generic-account-failover.ts:
- Around line 659-661: Update the sibling-selection logic in the generic account
failover flow so that, after checking for a listed sibling, it selects an
eligible Antigravity sibling with an unknown roster before the healthy-active
return. Preserve the existing support check for known rosters, and add coverage
in the Antigravity account roster tests.
Review comments at @src/providers/antigravity-account-roster.ts:
- Line 13: Revise the Antigravity model contract to describe the static lineup
as a seed, not an entitlement superset, and identify account discovery as
authoritative. In src/providers/antigravity-account-roster.ts lines 13-13,
replace the superset claim; in src/codex/catalog/model-hints.ts lines 434-435,
explain drift suppression without implying the seed includes every discoverable
model; in structure/providers-and-adapters.md lines 588-588, distinguish the
static seed from authoritative account discovery.
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docs-site/src/content/docs/guides/providers.mdscripts/test-layout/layout.jsonsrc/codex/catalog/model-hints.tssrc/codex/catalog/provider-models.tssrc/oauth/generic-account-failover.tssrc/providers/antigravity-account-roster.tsstructure/providers-and-adapters.mdtests/adapters/google/antigravity-account-roster.test.tstests/fixtures/test-layout-expected.json
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| The built-in `google-antigravity` model list is Gemini 3.8 Flash (`gemini-3.8-flash`), Gemini 4 Argon | ||
| (`gemini-4-argon`), Claude Opus 5.5 (`claude-opus-5-5`), and Claude Sonnet 5.5 | ||
| (`claude-sonnet-5-5`), each with low, medium, and high efforts. What you actually see is your | ||
| account's own model discovery, because Google enables models per account: some accounts list |
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🎯 Functional Correctness | 🟡 Minor | ⚡ Quick win
Qualify the account-discovery claim. If OAuth has no usable token or discovery fails, src/codex/catalog/provider-models.ts returns configured static models instead of the account’s discovered models. An unavailable Argon model can therefore remain visible. State that the picker follows the account roster after successful discovery, and that fallback rows do not prove entitlement. As per path instructions, “Check that user-facing docs stay in sync with actual CLI/API behavior.”
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Review comment at @docs-site/src/content/docs/guides/providers.md at line 160:
Update the account model-discovery guidance to say the picker follows the
account roster only after successful discovery; clarify that fallback static
models may still appear when discovery is unavailable and do not prove account
entitlement.
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Source: Path instructions
| ? modelEligible.find(id => id !== active && (providerName === "kiro" | ||
| ? kiroModelListingHasRoom(config, id, requestedModelId!) | ||
| : accountListsModel(providerName, id, requestedModelId!) === true)) |
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🎯 Functional Correctness | 🟠 Major | ⚡ Quick win
Select an unknown-roster sibling before retaining a known-unsupported active account. If the active Antigravity roster excludes the requested model and an eligible sibling has no roster, modelEligible retains the sibling, but this check requires true support. With the default strategy and a healthy active account, the later return keeps the known-unsupported account and sends a request likely to fail with 404. After checking for a listing sibling, select an eligible unknown-roster sibling before the healthy-active return. Add this case beside tests/adapters/google/antigravity-account-roster.test.ts Lines 172-177.
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Review comment at @src/oauth/generic-account-failover.ts around lines 659 - 661:
Update the sibling-selection logic in the generic account failover flow so that,
after checking for a listed sibling, it selects an eligible Antigravity sibling
with an unknown roster before the healthy-active return. Preserve the existing
support check for known rosters, and add coverage in the Antigravity account
roster tests.
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| * found" for every `claude-{opus,sonnet}-5-5-*` id, while other accounts list only the 5.5 | ||
| * families. Gemini 4 Argon is likewise Ultra / Enterprise only. Google documents Claude 5.5 as | ||
| * needing a directly billed, non-trial Pro or Ultra plan and rolls it out gradually, so the static | ||
| * lineup is a superset and only discovery says what one account can actually call. |
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
Describe the static lineup as a seed, not an entitlement superset. The tested Claude 4.6 account discovers models absent from ANTIGRAVITY_MODELS. Conversely, the seed includes models unavailable to that account.
src/providers/antigravity-account-roster.ts#L13-L13: replace the superset claim in the roster contract.src/codex/catalog/model-hints.ts#L434-L435: explain drift suppression without claiming the seed contains every discoverable model.structure/providers-and-adapters.md#L588-L588: distinguish the static seed from authoritative account discovery.
As per coding guidelines for structure/**, “A doc in this folder states the contract that holds right now.”
📍 Affects 3 files
src/providers/antigravity-account-roster.ts#L13-L13(this comment)src/codex/catalog/model-hints.ts#L434-L435structure/providers-and-adapters.md#L588-L588
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only still-valid issues, skip the rest with a brief reason, keep changes
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Review comment at @src/providers/antigravity-account-roster.ts at line 13:
Revise the Antigravity model contract to describe the static lineup as a seed,
not an entitlement superset, and identify account discovery as authoritative. In
src/providers/antigravity-account-roster.ts lines 13-13, replace the superset
claim; in src/codex/catalog/model-hints.ts lines 434-435, explain drift
suppression without implying the seed includes every discoverable model; in
structure/providers-and-adapters.md lines 588-588, distinguish the static seed
from authoritative account discovery.
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Source: Coding guidelines
|
Maintainer integration into |
Summary
Adds Google's Gemini 4 Argon to the
google(Gemini API key) andgoogle-antigravityproviders. On Antigravity, Argon requires a User-Agent split: Cloud Code Assist (CCA) serves Argon only to the Antigravity CLI client, while other agent models need the IDE client.Behavior
google-antigravity/gemini-4-argonwas not offered. A hand-typedgemini-4-argon-highwent out with the IDE UA and got404 Requested entity was not found.gemini-4-argonis a picker row with low/medium/high efforts. They map to the wire idsgemini-4-argon-low,-medium, and-high; the default is medium, and xhigh/max clamp to high. Argon requests and:fetchAvailableModelsdiscovery sendantigravity/cli/1.3.4 (os_type=darwin; arch=arm64; aidev_client; auth_method=oauth). Every other Antigravity model keepsantigravity/ide/2.5.5 (...), because the CLI UA 404sgemini-3.7-flash-tieredandgemini-3.1-pro-low.Antigravity lineup cleanup (3.8 / 4 / 5.5 / 5.5)
The static
google-antigravitypicker (ANTIGRAVITY_MODELS, which also seeds the registry and reconcile) is now exactlygemini-3.8-flash,gemini-4-argon,claude-opus-5-5,claude-sonnet-5-5. Each has low/medium/high efforts mapped to<id>-low/-medium/-highwire ids, with no extrathinkingLevel; the default is medium.gemini-3.7-flash,gemini-3.1-pro,gemini-3.1-flash-image,claude-sonnet-4-6,claude-opus-4-6-thinking,gpt-oss-120b-medium. They stay in a newANTIGRAVITY_KNOWN_PICKER_MODELSset, so suffix detection, discovery collapse, and usage identity behave as before. A savedgemini-3.7-flashstill resolves togemini-3.7-flash-tieredplusthinkingLevel, and not as a suffix id. Models that live discovery still returns (Claude 4.6, gpt-oss) keep appearing through discovery.feat/antigravity-direct-protocols).Verified ids (2026-10-14,
:fetchAvailableModelson the home-Mac Antigravity account, run with both UAs)gemini-3.8-flash-{low,medium,high}gemini-3.8-flash-tieredtieredModelIds.flash)gemini-4-argon-mediumgemini-4-argon-low,-highclaude-opus-5-5-*,claude-sonnet-5-5-*claude-sonnet-4-6,claude-opus-4-6-thinkinggpt-oss-120b-mediumgemini-3.7-flash-tieredgemini-3.1-pro-low,gemini-pro-agentArgon
-low/-medium/-highwere verified callable with the CLI UA on Jun's travel-Mac account. The Claude 5.5-low/-medium/-highfamily was returned by live discovery on 2026-10-03 (devlog/_fin/261003_release_lane_c: six ids, 1,000,000 tokens each, image support). The home-Mac account in the table above can't call either model, which looks like a per-account entitlement difference.Live verification on the home Mac (2026-10-14, Antigravity account
bitk***@gmail.com)Direct CCA (
v1internal:generateContent, minimal "pong" request) and the installed ocx 2.83.0 proxy (/v1/chat/completionswithreasoning_effort):gemini-3.8-flashgemini-3.8-flash-{low,medium,high}, default medium; IDE UAgemini-4-argongemini-4-argon-{low,medium,high}, default medium; CLI UAclaude-opus-5-5claude-opus-5-5-{low,medium,high}, default medium; IDE UAclaude-sonnet-5-5claude-sonnet-5-5-{low,medium,high}, default medium; IDE UAgemini-4-argon,claude-opus-5-5, andclaude-sonnet-5-5return 404 under both UAs. Only the suffixed ids are wire ids.gemini-3.8-flash-tieredanswers 200 under both UAs and is now listed intieredModelIds.flash.claude-sonnet-4-6andclaude-opus-4-6-thinkingare still listed.claude-sonnet-4-6returns 200.Claude 5.5 is per-account (entitlement), not a client bug. This account's
fetchAvailableModelslists no Claude 5.5 rows under either UA, and every 5.5 id returns 404. Jun has confirmed 5.5 on other accounts. Public cases match exactly:official_models.jsonand gcli2api feat(gui): Dashboard workspace view + drop Providers classic toggle #428 confirm the wire idsclaude-{opus,sonnet}-5-5-{low,medium,high}, with no bare id and no-thinkingsuffix.How this PR behaves per account:
liveModels: true(the Antigravity default), a successful discovery is authoritative.mergeConfiguredModelsIntoLiveCatalogdrops static rows the account did not return (verified by reading the code). An account without 5.5 or Argon therefore does not list them, and an entitled account lists them with the static effort ladder. The static rows show only when discovery is unavailable (logged out or failed), as the existing degraded fallback.Per-account model differences (Antigravity) and how this PR handles them
Google enables Antigravity models per account. The static lineup cannot describe every account, so each account's own discovery decides what it shows and where a request goes.
bitk***)gemini-3.8-flash-*,gemini-4-argon-*(CLI UA only),claude-sonnet-4-6,claude-opus-4-6-thinking,gpt-oss-120b-mediumclaude-*-5-5-*returns 404thinkingLevel(low/medium/high; max clamps to high)claude-{opus,sonnet}-5-5-{low,medium,high}instead of 4.6-low/-medium/-highwire id, with nothinkingLevelgemini-4-argon-*Google gates Claude 5.5 to directly billed, non-trial Pro/Ultra plans and rolls it out gradually (antigravity docs; Google staff in antigravity-cli #1184). Other clients handle it the same way: oh-my-pi PR #14342 and Antigravity-Manager PR #3594.
liveModels: true, the active account's discovery is authoritative. Static lineup rows it does not return are dropped, and the rows it does return (including Claude 4.6) are shown with their mappings. Switching the active account clears the model cache, so the catalog follows the account. Dropping static rows is no longer logged as drift forgoogle-antigravity, because the lineup is an entitlement superset.src/providers/antigravity-account-roster.ts(new) stores each account's discovered roster: picker ids, wire ids, and tier wire ids. The store is in memory, keeps rosters fresh for six hours, and is scoped to the config home.src/oauth/generic-account-failover.ts, the Kiro model-listing preference now also covers Antigravity. An account that lists the model wins, a known non-listing account is skipped while another remains, and an account without a fresh roster stays usable. WithoauthAccountFailover.enabledand two or more accounts, a Claude 5.5 request on a 4.6-only active account is steered to a 5.5 account before dispatch.tests/adapters/google/antigravity-account-roster.test.ts. It runs end-to-end discovery for a 4.6-only roster (exposes 4.6 + 3.8, hides static 5.5/Argon) and a 5.5 roster (exposes 3.8/4/5.5/5.5, no 4.6). It also covers 4.6 and 5.5 effort mapping, roster lookups (picker, tier, alias, TTL), the account ranking, and proactive steering of a 5.5 request.Touched locations
src/adapters/client-fingerprint.tsantigravityCliUserAgent()/ANTIGRAVITY_CLI_VERSION. TheGOOGLE_ANTIGRAVITY_USER_AGENToverride still applies to the IDE UA only, so setting it cannot re-lock Argon.src/adapters/google-antigravity-wire.tsANTIGRAVITY_CLI_REQUEST_UAandANTIGRAVITY_DISCOVERY_UA.antigravityUserAgentForWireModel(wire)returns the CLI UA only forgemini-4-argonand its-low/-medium/-highids (exact match).src/adapters/google.tsantigravityUserAgentForWireModel(wireModelId).src/web-search/gemini-executor.tsgemini-3.8-flash, which keeps the IDE UA.src/oauth/index.ts(buildModelsRequest):fetchAvailableModelscall uses the CLI UA. The quota probe insrc/providers/quota/antigravity.tsalso calls that RPC but is unchanged.src/providers/antigravity-models.ts[gemini-3.8-flash, gemini-4-argon, claude-opus-5-5, claude-sonnet-5-5]. Argon and Claude 5.5 get efforts, suffix wire maps, suffix-tier set membership, medium defaults, picker↔wire maps, context windows, and text/image input. The newANTIGRAVITY_KNOWN_PICKER_MODELSkeeps the dropped bases known to routing, discovery, and usage.defaultModelstaysgemini-3.8-flash.src/providers/registry/entries-core.tsgooglelistsgemini-4-argon(1,048,576 context, text/image input, low/medium/high efforts).defaultModelis unchanged.scripts/model-metadata.source.json, regeneratedsrc/generated/model-metadata.tsgoogle/gemini-4-argon: reasoning, 1,048,576 context, 65,536 max output. Nocostblock, so the price overlay decides.src/usage/expected-prices.tsgooglerows areverified; Antigravity rows (picker id and three wire ids) areverified-derived.src/adapters/cursor/catalog.ts,effort-map.tsgemini-4-argonseed (low/medium/high), following the 3.8 Flash precedent. It stays inert until Cursor's live roster lists it.docs-site/src/content/docs/guides/providers.mdtests/adapters/google/gemini-4-argon-antigravity.test.ts(registered inlayout.jsonandtest-layout-expected.json)thinkingLevel; usage canonicalization; discovery collapse; CLI UA only for Argon ids (near misses such asgemini-4-argonautandgemini-4-argon-maxstay on the IDE UA); Argon requests carry the CLI UA;gemini-3.7-flash-tiered,gemini-3.1-pro-low,gemini-pro-agent,gemini-3.8-flash-medium, and Claude keep the IDE UA; discovery sends the CLI UA; the IDE override doesn't touch the CLI UA.google-antigravity-wire.test.ts,oauth-provider-reconcile.test.ts,provider-registry-parity.test.ts,gemini-37-flash-migration.test.ts,google-hardening.test.ts,usage-cost.test.tstoHaveLength(4)); 3.7 is off the static list but stays inANTIGRAVITY_KNOWN_PICKER_MODELS; a saved 3.7 default stays operator-owned; overlay keys include Argon. The new argon test file also covers the lineup, Claude 5.5 suffix routing on the IDE UA, and unchanged routing for dropped bases.Intentionally unchanged
gemini-3.8-flash): Argon costs more and has no free tier.free-directory.ts: Argon is not on the free tier.commandcode.ai/models/gemini-4-argonreturns 302, and the live fixture has no Argon.ANTIGRAVITY_CLAUDE_SDK_PARAGRAPH_REJECTORS: membership is probe-only, and Argon has not been probed.Sources and evidence
gemini-4-argon-{low,medium,high}. The IDE UA gets404 Requested entity was not foundfor Argon. The CLI UA 404sgemini-3.7-flash-tieredandgemini-3.1-pro-low.minimalreturns 400.google/gemini-4-argon.Open questions for @lidge-jun
(Resolved: Argon is verified on the home-Mac account; Claude 5.5 is account-gated, see the live verification above.) Which account should the Argon and Claude 5.5 ids be verified on? On the home-Mac account, both 404 and discovery lists neither Claude 5.5 nor Argon low/high. Discovery also now lists
gemini-3.8-flash-tiered. Should a follow-up retarget the retired-Flash redirect (3.5/3.6, and now 3.7) from the deadgemini-3.7-flash-tieredtogemini-3.8-flash-tiered?Does CCA reject the Claude-Agent identity paragraph for Argon, as it does for 3.7/3.8 Flash (429
RESOURCE_EXHAUSTED)? If so,gemini-4-argonbelongs inANTIGRAVITY_CLAUDE_SDK_PARAGRAPH_REJECTORS.Does discovery under the CLI UA still list every model the IDE UA listed, including
gemini-3.7-flash-tiered,gemini-3.1-pro-low,gemini-pro-agent, Claude, andgpt-oss? A smaller list would hide those rows from discovered catalogs.Should Argon become the default for
googleor the Gemini web-search sidecar? This PR keeps both unchanged.Should the Cursor seed stay preemptive until Cursor's live roster confirms the id?
Pricing rises to $4/$20/$0.20 on 2026-12-01, and the rows need updating then.
Verification
bun run typecheck: passbun run privacy:scan: passbun run structure:check: passbun run generate:model-metadata: output committedtests/adapters/google/gemini-4-argon-antigravity.test.ts,google-antigravity-wire.test.ts,oauth-provider-reconcile.test.ts,google-hardening.test.ts, andusage-cost.test.ts.Checklist
Summary by CodeRabbit
New Features
Updates