feature
Claude Code

Fast mode for Opus 4.8 deprecated, removal scheduled November 30, 2026

code.claude.comagent

Fast mode for Opus 4.8 is deprecated as of October 30, 2026 and will be removed November 30, 2026. After removal, fast mode requests on Opus 4.8 return an error without fallback. Developers should migrate to Opus 5.5 to maintain the speedup.

Stacks this affects

Claude Code ships in 4 tested stacks here.

Claude Code MCP setup
Code · Agent setup
$50/mo
Claude Code setup
Code · Agent setup
$50/mo
Claude Code only
Code · Workflow
$50/mo
Ship code with AI
Code · Workflow
$50/mo
All Claude Code changes and pricing

More Claude Code

pricingClaude Code Team Premium drops from $125 to $100 per monthpricingClaude Code Team Standard drops from $25 to $20 per monthfeatureAgent SDK hook callbacks now support onFailure block to prevent action executionfeatureAdmin API gains new cost report endpoint for organization spend analyticsfeatureWeb and shell tool calls now prompt before sending email addresses to external networksfeatureSelf-hosted runners can now control nested session ID behavior with environment variable