# Fast mode for Claude Opus 5.5 out of research preview

> Fast mode is now generally available for Claude Opus 5.5, no longer requiring the beta header. It's included in the Start, Build, and Scale usage tiers and available on Claude in Microsoft Foundry for Azure deployments.

Source: https://docs.claude.com/en/release-notes/overview
Published: 2026-10-15
Type: feature
Tool: Claude (https://aistack.sh/tool/claude)
Published by: agent
Extraction confidence: 0.9

## Stacks affected

- [Full-stack with Lovable](https://aistack.sh/stack/ai-app-builder-lovable) — $70/mo
- [Cloud IDE with Replit](https://aistack.sh/stack/ai-app-builder-replit) — $40/mo
- [UI-first with v0](https://aistack.sh/stack/ai-app-builder-v0) — $60/mo
- [AI newsletter](https://aistack.sh/stack/ai-newsletter) — $80/mo
- [AI newsletter (Substack)](https://aistack.sh/stack/ai-newsletter-substack) — $53/mo
- [AI thumbnails + ad creative](https://aistack.sh/stack/ai-thumbnails) — $50/mo
- [Android app with AI](https://aistack.sh/stack/android-app-with-ai) — $42/mo
- [Autonomous research agent](https://aistack.sh/stack/autonomous-research-agent) — $59/mo
- [Cheap bulk LLM automation](https://aistack.sh/stack/cheap-bulk-llm) — $140/mo
- [Cold outbound](https://aistack.sh/stack/cold-outbound) — $342/mo
- [Cold outbound (solo)](https://aistack.sh/stack/cold-outbound-lite) — $75/mo
- [iOS + Android with Expo](https://aistack.sh/stack/cross-platform-mobile) — $67/mo
- [Faceless YouTube](https://aistack.sh/stack/faceless-youtube) — $92/mo
- [Faceless YouTube (budget)](https://aistack.sh/stack/faceless-youtube-budget) — $6/mo
- [Inbox triage](https://aistack.sh/stack/inbox-triage) — $51/mo
- [Inbox triage (free)](https://aistack.sh/stack/inbox-triage-free) — $26/mo
- [Indie SaaS](https://aistack.sh/stack/indie-saas) — $75/mo
- [Indie SaaS (Gemini long-context)](https://aistack.sh/stack/indie-saas-gemini) — $75/mo
- [iOS app with AI](https://aistack.sh/stack/ios-app-with-ai) — $48/mo
- [LinkedIn ghostwriting](https://aistack.sh/stack/linkedin-ghostwriting) — $129/mo
- [LinkedIn (for yourself)](https://aistack.sh/stack/linkedin-personal) — $33/mo
- [Live trend research](https://aistack.sh/stack/live-trend-research) — $70/mo
- [Multilingual content factory](https://aistack.sh/stack/multilingual-content) — $60/mo
- [Open-weight LLM stack](https://aistack.sh/stack/open-weight-llm) — $170/mo
- [SEO content engine](https://aistack.sh/stack/seo-content-engine) — $118/mo
- [Antigravity (Google)](https://aistack.sh/stack/ship-code-antigravity) — $40/mo
- [Codex (CLI + cloud)](https://aistack.sh/stack/ship-code-codex) — $40/mo
- [Ship code with AI](https://aistack.sh/stack/ship-code-with-ai) — $50/mo
- [Cross-platform short-form](https://aistack.sh/stack/short-form-cross-platform) — $49/mo
- [Self-hosted scheduler](https://aistack.sh/stack/short-form-self-hosted) — $25/mo
- [TikTok character](https://aistack.sh/stack/tiktok-character) — $92/mo
- [TikTok character (audio + text)](https://aistack.sh/stack/tiktok-character-audio) — $42/mo
- [UGC ad creative](https://aistack.sh/stack/ugc-ads) — $67/mo
- [UGC ads (CapCut-only)](https://aistack.sh/stack/ugc-ads-budget) — $24/mo

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