Update from code changes: bring your own model settings

[mintlify]

Summary

Documents the new self-serve bring-your-own-key (BYOK) settings that let Enterprise deployments run Mintlify AI products on their own LLM provider and API key.

Changes

• Added a "Bring your own model" section to the assistant configuration page covering the Enterprise add-on requirement, supported providers (OpenRouter, Anthropic, OpenAI-compatible), base URL requirements, model selection, and API key handling (secure storage, reuse, rotation, and removal).
• Clarified that BYOK is a separately contracted Enterprise add-on and that the AI model section appears in the dashboard only when the add-on is included in the contract.
• Noted that OpenRouter is the default provider and works with all Mintlify AI products, while Anthropic and OpenAI-compatible providers have limited compatibility.
• Mirrored the new section in the Spanish, French, and Chinese translations.
• Reverted unrelated accidental edits to the quickstart page that had landed on this branch (stray text in the description and a removed snippet import that broke the page).

Context

Enterprise customers can now configure the LLM that powers Mintlify AI products from the dashboard under Settings → API keys. The AI model section supports OpenRouter (default, full compatibility), Anthropic, and OpenAI-compatible providers with a curated model list per provider. API keys are stored securely, never shown after saving, and must be re-entered when provider settings change. The section is hidden entirely for deployments without the BYOK add-on.

https://github.com/mintlify/mint/pull/10437

Update history

• Documented the initial self-serve BYOK settings UI (providers, models, key handling) with es/fr/zh translations (mint#10437).
• Updated the plan-requirement wording: BYOK is a separately contracted Enterprise add-on and the AI model section is hidden without it, replacing the earlier "available on Enterprise plans" phrasing (mint#10517).
• Documented OpenRouter as the default provider with full AI product compatibility and noted the limited compatibility of Anthropic and OpenAI-compatible providers, in all four languages; also reverted unrelated broken quickstart edits that had landed on this branch (mint#10538).

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Note

Low Risk
Documentation-only changes to assistant configuration pages; no application code or security behavior changes.

Overview
Adds Bring your own model documentation to the assistant configuration guide (English plus es, fr, and zh), placed after bot protection and before billing.

The new section explains that BYOK is an Enterprise add-on: the AI model UI in Settings → API keys only appears when the add-on is on the contract. It walks through enabling Bring your own model, choosing OpenRouter (default, full product support), Anthropic, or OpenAI-compatible (limited compatibility), OpenAI-compatible HTTPS base URL rules, model selection, and secure API key storage, reuse on same-provider model changes, re-entry on provider/URL changes, rotation, and turning the toggle off to revert to Mintlify-managed models.

Frontmatter keywords are extended with BYOK-related terms in all four locales.

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[mintlify]

Update from code changes updated this PR.

Clarified BYOK as contracted Enterprise add-on hidden without entitlement

Source PRs

• mintlify/mint#10517 — feat(dashboard): Gate BYOK UI on entitlement

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[mintlify]

Update from code changes updated this PR.

Added OpenRouter default and provider compatibility notes; reverted broken quickstart edits

Source PRs

• mintlify/mint#10538 — chore: choose openrouter as the default and add warning about feature parity