diff --git a/CHANGELOG.md b/CHANGELOG.md
index a16311417e..6f4afc9697 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ _Development cycle in progress — entries are added as work merges into `releas
 
 ### 🔧 Bug Fixes
 
+- **fix(catalog):** remove `minimaxai/minimax-m3` from the **NVIDIA NIM** tier — NVIDIA does not host it yet, so every request 404'd (`404 page not found`), while sibling `minimax-m2.7` on the same provider works. MiniMax M3 stays available on the tiers that actually serve it. (#3329 — thanks @mikmaneggahommie)
 - **fix(electron):** ship `loginManager.js` in the packaged app — #3292 added it (and a `require("./loginManager")` in `main.js`) without adding it to electron-builder's `build.files`, so the packaged app crashed at startup with "Cannot find module" on the Linux/macOS smoke tests. Plus a regression test asserting every local `require("./x")` in the Electron entry points is shipped. ([#3334](https://github.com/diegosouzapw/OmniRoute/pull/3334) — thanks @diegosouzapw)
 - **fix(startup):** correct the #3292 auto-refresh daemon import (`@/open-sse/...` → `@omniroute/open-sse/services/autoRefreshDaemon`); the `@/` alias maps to `src/`, so the daemon silently never ran in the built standalone (non-fatal "Cannot find module", caught at runtime). Adds a regression test banning `@/open-sse/*` imports in `src/`. ([#3335](https://github.com/diegosouzapw/OmniRoute/pull/3335) — thanks @diegosouzapw)
 - **fix(electron):** wrap `autoUpdater.checkForUpdates()` so a 404/offline/rate-limited update check can no longer surface as an unhandled rejection (the `error` event still notifies the user); fixes the macOS-intel packaged-app smoke failure. ([#3339](https://github.com/diegosouzapw/OmniRoute/pull/3339) — thanks @diegosouzapw)
diff --git a/open-sse/config/providerRegistry.ts b/open-sse/config/providerRegistry.ts
index bef0b02233..ef606a452f 100644
--- a/open-sse/config/providerRegistry.ts
+++ b/open-sse/config/providerRegistry.ts
@@ -3223,8 +3223,9 @@ const _REGISTRY_EAGER: Record<string, RegistryEntry> = {
     authHeader: "bearer",
     models: [
       { id: "z-ai/glm-5.1", name: "GLM 5.1" },
-      // #3110: MiniMax M3 via NVIDIA
-      { id: "minimaxai/minimax-m3", name: "MiniMax M3", contextLength: 1048576 },
+      // #3329: minimaxai/minimax-m3 removed — NVIDIA NIM does not host it yet
+      // (every request 404s), while minimax-m2.7 on the same provider works.
+      // Re-add only once NVIDIA actually serves it.
       { id: "minimaxai/minimax-m2.7", name: "MiniMax M2.7" },
       { id: "google/gemma-4-31b-it", name: "Gemma 4 31B" },
       { id: "mistralai/mistral-small-4-119b-2603", name: "Mistral Small 4 2603" },
diff --git a/tests/unit/nvidia-minimax-m3-removed-3329.test.ts b/tests/unit/nvidia-minimax-m3-removed-3329.test.ts
new file mode 100644
index 0000000000..77e0ce4822
--- /dev/null
+++ b/tests/unit/nvidia-minimax-m3-removed-3329.test.ts
@@ -0,0 +1,19 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+const { getRegistryEntry } = await import("../../open-sse/config/providerRegistry.ts");
+
+// #3329: `minimaxai/minimax-m3` was registered in the nvidia (NVIDIA NIM) tier,
+// but NVIDIA NIM does not host it — every request returns `404 page not found`,
+// while sibling models on the same provider (e.g. `minimaxai/minimax-m2.7`)
+// work. Advertising a model that 404s is a catalog bug; it is removed from the
+// nvidia tier until NVIDIA actually serves it. It remains on the tiers that do
+// (minimax / minimax-cn / opencode / etc.).
+test("nvidia tier does not advertise minimaxai/minimax-m3 (404 upstream) (#3329)", () => {
+  const nvidia = getRegistryEntry("nvidia");
+  assert.ok(nvidia, "nvidia registry entry must exist");
+  const ids = (nvidia.models ?? []).map((m) => m.id);
+  assert.ok(!ids.includes("minimaxai/minimax-m3"), "minimaxai/minimax-m3 must not be in nvidia");
+  // sanity: the working sibling stays listed
+  assert.ok(ids.includes("minimaxai/minimax-m2.7"), "minimaxai/minimax-m2.7 stays available");
+});