OpenCode models: show or hide by source (Zen, Go, own keys, local), with a Free filter

[AnshShah3009]

Problem

OpenCode's model list mixes models with very different access terms. On my install T3 lists 144 OpenCode models:

Source (OpenCode provider id)	Models	How I pay or run them
OpenAI (openai/…)	79	my own key
OpenCode Go (opencode-go/…)	30	Go subscription (a couple are free)
Anthropic (anthropic/…)	20	my own key
OpenCode Zen (opencode/…)	8	free models, or per-token Zen billing
Inception (inception/…)	4	my own key
Ollama (ollama/…)	3	local, self-hosted

Which models I want in the picker follows these lines: everything local, only free models, no Go models without a Go subscription. Today that means one click per model. The settings page has per-model visibility toggles and one Disable all / Enable all button (#10947), which acts on every built-in model and ignores the filter box.

Proposal

1. One switch per source. Group the provider's Models settings by source, using the sub-provider label T3 already shows in the picker. Each group header gets a switch and a count, such as "OpenCode Go · 0 of 30 shown". Local models such as Ollama become their own group with no extra work. Per-model toggles stay and override the group.
2. Group choices are rules, not snapshots. hiddenModels stores model IDs, so a model that appears later shows up even when its whole group was hidden. That happens when OpenCode adds a Go model or I ollama pull a new one. A hidden group should keep hiding its new models, and a shown group (such as local) should pick up new models without another visit to settings.
3. "Free" is a filter, not a group. Free models exist in both Zen and Go, so free/paid cuts across sources. OpenCode's model schema has a per-model cost, which is 0/0 for free models. T3 could keep that from the inventory and offer a "Free" badge and filter, both in settings and in the picker. Today flattenOpenCodeModels (packages/provider-opencode/src/server/status.ts) keeps only slug, name and sub-provider label.
4. Disable all / Enable all follows the filter. When a filter is active, the button acts on the models shown and says so, such as "Disable 30 shown". With no filter, it works as today. This is the smallest piece and helps every provider on its own.

With 1–3, typical setups take a few clicks: "local + free only", "Zen and my own keys, no Go", "everything except OpenAI".

Notes

• Zen models currently have no sub-provider label, because their provider name matches "OpenCode" and subProviderLabelFor drops it. Grouping needs a name for them, such as "OpenCode Zen".
• A -free name suffix is not a reliable marker. In OpenCode's cached models.dev catalog, opencode/big-pickle has cost 0/0 without -free in its name. I checked that local catalog cache (dated 2026-09-17), not the live inventory T3 receives.
• Cost doesn't say whether a Go model is covered by a subscription. The opencode-go provider id does.
• Local models already appear. All three models in my local Ollama are listed, picked up through OpenCode with no provider entry in opencode.jsonc.
• Related, about Go usage reporting: [Bug]: Usage → Limits never reports OpenCode Go for OpenCode 2 Console logins #14983, [Bug]: OpenCode Go limits say "could not read usage" when the Go API key has expired #21625.

Environment: T3 Code 0.1.7-nightly.20261102.4061 (Linux desktop), OpenCode 2.2.5, Ollama with 3 local models.