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fix(provider): hide Zen free-tier models, deprecate freeOnly, surface 403 hint in chat - #266
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… 403 hint in chat OpenCode gates free-tier Zen models to its own clients since Sep 17 2026 (upstream anomalyco/opencode#49580; issues #235/#240). Verified live: all 10 free Zen models 403 with FreeTierError, paid Zen models 401 (not gated), Go free models only hit the credential check (unlimited for subscribers, third-party clients explicitly permitted). - config: isZenFreeTierModel() with vendor-scoped contract (Zen only) - definitions: Zen filterModel excludes free-tier models unconditionally; freeOnly setting ignored (deprecated, kept registered) - errors: free-tier / Router.Unavailable hint now replaces raw gateway detail in error.message too - chat renders message, not userMessage - package.json/README: freeOnly marked deprecated, free-tier claims removed - tests: classification + chat-surface hint assertions - docs: issue doc 112, addendum on doc 106, CHANGELOG unreleased entries
- replace the Zen free-models table with a notice: free-tier Zen models 403 for third-party clients since Sep 17 2026 (upstream #49580); paid Zen + all Go models unaffected, Go free models stay unlimited - quick start, feature table, Copilot comparison, and FAQ no longer advertise free Zen models or '$0' usage - package.json: drop 'free-models' keyword and 'free Claude Opus' from the description; replace stale -free model examples in thinking docs
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Summary
Follow-up to the free-tier policy handled in #235/#240 (docs/issues/106). A Marketplace review surfaced that the 0.7.6 fix only replaced the error text — the Zen picker (default
freeOnly: true) kept steering users into models upstream now 403s, and chat still rendered raw gateway JSON.Verified live (2026-10-20): all 10 free Zen models →
403 FreeTierError; paid Zen →401 AuthError(not gated); Go free models → credential check only. The gate is Zen-only — Go free models are unlimited for subscribers and third-party clients are explicitly permitted, so the filter is vendor-scoped.Changes
src/config.ts— newisZenFreeTierModel()with a CONTRACT comment (vendor-scoped, Go exceptions listed, removable if upstream reopens)src/provider/definitions.ts— ZenfilterModelexcludes free-tier models unconditionally (live/cached/bundled paths); unused imports droppedsrc/errors.ts— free-tier / Router.Unavailable hint now replaces the raw detail inerror.messagetoo (VS Code chat rendersmessage, notuserMessage); raw body still logged in the output channelpackage.json—freeOnlydeprecated (kept registered, ignored);free-modelskeyword and "free Claude Opus" removed from the description; stale-freemodel examples replacedREADME.md— all free-Zen claims removed (quick start, feature table, comparison, FAQ); dated policy notice section linking pinned announcement 📌 [ANNOUNCEMENT] OpenCode free-tier Zen models no longer work from VS Code (upstream policy, since Sep 17, 2026) — not a bug in this extension #265isZenFreeTierModelclassification + chat-surface hint assertionsdocs/issues/112-20261020-zen-free-tier-policy-followup.md, addendum on doc 106, CHANGELOG[Unreleased]Verification
npm run lint— all 7 checks pass (editorconfig, eslint, markdown, prettier, shellcheck, typecheck, unit tests)Related: pinned announcement #265, #258 (closed as duplicate)