v0.128.1

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Features

• ✨ Add viewport meta tag to improve Swagger UI on mobile devices. PR #​14777 by @​Joab0.
• 🚸 Improve error message for invalid query parameter type annotations. PR #​14479 by @​retwish.

Fixes

• 🐛 Update ValidationError schema to include input and ctx. PR #​14791 by @​jonathan-fulton.
• 🐛 Fix TYPE_CHECKING annotations for Python 3.14 (PEP 649). PR #​14789 by @​mgu.
• 🐛 Strip whitespaces from Authorization header credentials. PR #​14786 by @​WaveTheory1.
• 🐛 Fix OpenAPI duplication of anyOf refs for app-level responses with specified content and model as Union. PR #​14463 by @​DJMcoder.

Refactors

• 🎨 Tweak types for mypy. PR #​14816 by @​tiangolo.
• 🏷️ Re-export IncEx type from Pydantic instead of duplicating it. PR #​14641 by @​mvanderlee.
• 💡 Update comment for Pydantic internals. PR #​14814 by @​tiangolo.

Docs

• 📝 Update docs for contributing translations, simplify title. PR #​14817 by @​tiangolo.
• 📝 Fix typing issue in docs_src/app_testing/app_b code example. PR #​14573 by @​timakaa.
• 📝 Fix example of license identifier in documentation. PR #​14492 by @​johnson-earls.
• 📝 Add banner to translated pages. PR #​14809 by @​YuriiMotov.
• 📝 Add links to related sections of docs to docstrings. PR #​14776 by @​YuriiMotov.
• 📝 Update embedded code examples to Python 3.10 syntax. PR #​14758 by @​YuriiMotov.
• 📝 Fix dependency installation command in docs/en/docs/contributing.md. PR #​14757 by @​YuriiMotov.
• 📝 Use return type annotation instead of response_model when possible. PR #​14753 by @​YuriiMotov.
• 📝 Use WSGIMiddleware from a2wsgi instead of deprecated fastapi.middleware.wsgi.WSGIMiddleware. PR #​14756 by @​YuriiMotov.
• 📝 Fix minor typos in release notes. PR #​14780 by @​whyvineet.
• 🐛 Fix copy button in custom.js. PR #​14722 by @​fcharrier.
• 📝 Add contribution instructions about LLM generated code and comments and automated tools for PRs. PR #​14706 by @​tiangolo.
• 📝 Update docs for management tasks. PR #​14705 by @​tiangolo.
• 📝 Update docs about managing translations. PR #​14704 by @​tiangolo.
• 📝 Update docs for contributing with translations. PR #​14701 by @​tiangolo.
• 📝 Specify language code for code block. PR #​14656 by @​YuriiMotov.

Translations

• 🌐 Improve LLM prompt of uk documentation. PR #​14795 by @​roli2py.
• 🌐 Update translations for ja (update-outdated). PR #​14588 by @​tiangolo.
• 🌐 Update translations for uk (update outdated, found by fixer tool). PR #​14739 by @​YuriiMotov.
• 🌐 Update translations for tr (update-outdated). PR #​14745 by @​tiangolo.
• 🌐 Update llm-prompt.md for Korean language. PR #​14763 by @​seuthootDev.
• 🌐 Update translations for ko (update outdated, found by fixer tool). PR #​14738 by @​YuriiMotov.
• 🌐 Update translations for de (update-outdated). PR #​14690 by @​tiangolo.
• 🌐 Update LLM prompt for Russian translations. PR #​14733 by @​YuriiMotov.
• 🌐 Update translations for ru (update-outdated). PR #​14693 by @​tiangolo.
• 🌐 Update translations for pt (update-outdated). PR #​14724 by @​tiangolo.
• 🌐 Update Korean LLM prompt. PR #​14740 by @​hard-coders.
• 🌐 Improve LLM prompt for Turkish translations. PR #​14728 by @​Kadermiyanyedi.
• 🌐 Update portuguese llm-prompt.md. PR #​14702 by @​ceb10n.
• 🌐 Update LLM prompt instructions file for French. PR #​14618 by @​tiangolo.
• 🌐 Update translations for ko (add-missing). PR #​14699 by @​tiangolo.
• 🌐 Update translations for ko (update-outdated). PR #​14589 by @​tiangolo.
• 🌐 Update translations for uk (update-outdated). PR #​14587 by @​tiangolo.
• 🌐 Update translations for es (update-outdated). PR #​14686 by @​tiangolo.
• 🔧 Add LLM prompt file for Turkish, generated from the existing translations. PR #​14547 by @​tiangolo.
• 🔧 Add LLM prompt file for Traditional Chinese, generated from the existing translations. PR #​14550 by @​tiangolo.
• 🔧 Add LLM prompt file for Simplified Chinese, generated from the existing translations. PR #​14549 by @​tiangolo.

Internal

• ⬇️ Downgrade LLM translations model to GPT-5 to reduce mistakes. PR #​14823 by @​tiangolo.
• 🐛 Fix translation script commit in place. PR #​14818 by @​tiangolo.
• 🔨 Update translation script to retry if LLM-response doesn't pass validation with Translation Fixer tool. PR #​14749 by @​YuriiMotov.
• 👷 Run tests only on relevant code changes (not on docs). PR #​14813 by @​tiangolo.
• 👷 Run mypy by pre-commit. PR #​14806 by @​YuriiMotov.
• ⬆ Bump ruff from 0.14.3 to 0.14.14. PR #​14798 by @​dependabot[bot].
• ⬆ Bump pyasn1 from 0.6.1 to 0.6.2. PR #​14804 by @​dependabot[bot].
• ⬆ Bump sqlmodel from 0.0.27 to 0.0.31. PR #​14802 by @​dependabot[bot].
• ⬆ Bump mkdocs-macros-plugin from 1.4.1 to 1.5.0. PR #​14801 by @​dependabot[bot].
• ⬆ Bump gitpython from 3.1.45 to 3.1.46. PR #​14800 by @​dependabot[bot].
• ⬆ Bump typer from 0.16.0 to 0.21.1. PR #​14799 by @​dependabot[bot].
• 👥 Update FastAPI GitHub topic repositories. PR #​14803 by @​tiangolo.
• 👥 Update FastAPI People - Contributors and Translators. PR #​14796 by @​tiangolo.
• 🔧 Ensure that an edit to uv.lock gets the internal label. PR #​14759 by @​svlandeg.
• 🔧 Update sponsors: remove Requestly. PR #​14735 by @​tiangolo.
• 🔧 Update sponsors, LambdaTest changes to TestMu AI. PR #​14734 by @​tiangolo.
• ⬆ Bump actions/cache from 4 to 5. PR #​14511 by @​dependabot[bot].
• ⬆ Bump actions/upload-artifact from 5 to 6. PR #​14525 by @​dependabot[bot].
• ⬆ Bump actions/download-artifact from 6 to 7. PR #​14526 by @​dependabot[bot].
• 👷 Tweak CI input names. PR #​14688 by @​tiangolo.
• 🔨 Refactor translation script to allow committing in place. PR #​14687 by @​tiangolo.
• 🐛 Fix translation script path. PR #​14685 by @​tiangolo.
• ✅ Enable tests in CI for scripts. PR #​14684 by @​tiangolo.
• 🔧 Add pre-commit local script to fix language translations. PR #​14683 by @​tiangolo.
• ⬆️ Migrate to uv. PR #​14676 by @​DoctorJohn.
• 🔨 Add LLM translations tool fixer. PR #​14652 by @​YuriiMotov.
• 👥 Update FastAPI People - Sponsors. PR #​14626 by @​tiangolo.
• 👥 Update FastAPI GitHub topic repositories. PR #​14630 by @​tiangolo.
• 👥 Update FastAPI People - Contributors and Translators. PR #​14625 by @​tiangolo.
• 🌐 Update translation prompts. PR #​14619 by @​tiangolo.
• 🔨 Update LLM translation script to guide reviewers to change the prompt. PR #​14614 by @​tiangolo.
• 👷 Do not run translations on cron while finishing updating existing languages. PR #​14613 by @​tiangolo.
• 🔥 Remove test variants for Pydantic v1 in test_request_params. PR #​14612 by @​tiangolo.
• 🔥 Remove Pydantic v1 specific test variants. PR #​14611 by @​tiangolo.