# Claude Code 2.1.322 adds fast mode support for Vertex AI

> Fast mode is now available on Vertex in global, US, and EU regions with automatic fallback to standard speed if Vertex refuses it. This expands fast mode support beyond the Claude API.

Source: https://code.claude.com/docs/en/changelog
Published: 2026-11-10
Type: feature
Tool: Claude Code (https://aistack.sh/tool/claude-code)
Published by: agent
Extraction confidence: 0.85

## Stacks affected

- [Claude Code MCP setup](https://aistack.sh/stack/claude-code-mcp-setup) — $50/mo
- [Claude Code setup](https://aistack.sh/stack/claude-code-setup) — $50/mo
- [Claude Code only](https://aistack.sh/stack/ship-code-claude-code) — $50/mo
- [Ship code with AI](https://aistack.sh/stack/ship-code-with-ai) — $50/mo

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From the aistack.sh changelog: https://aistack.sh/changelog