{"slug": "claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header", "title": "Claude Opus 5.5 Fast Mode Is Now GA: Remove That Beta Header", "summary": "Anthropic's Claude Opus 5.5 fast mode exited research preview and became generally available on October 15, removing the waitlist and the beta header requirement. Developers using the fast mode must remove the beta header to migrate, and the mode carries a 2x price premium.", "body_md": "Claude Opus 5.5 fast mode exited research preview on October 15. No more waitlist, no beta header. What changed, how to migrate, and when the 2x price is worth it.\n\nThe post \nClaude Opus 5.5 Fast Mode Is Now GA: Remove That Beta Header\n appeared first on \nbyteiota\n.", "url": "https://wpnews.pro/news/claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header", "canonical_source": "https://byteiota.com/claude-opus-55-fast-mode-ga/", "published_at": "2026-10-16 15:07:27+00:00", "updated_at": "2026-10-16 15:21:43.253370+00:00", "lang": "en", "topics": ["large-language-models", "ai-products", "developer-tools", "ai-tools"], "entities": ["Anthropic", "Claude Opus 5.5", "byteiota"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header", "markdown": "https://wpnews.pro/news/claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header.md", "text": "https://wpnews.pro/news/claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header.txt", "jsonld": "https://wpnews.pro/news/claude-opus-5-5-fast-mode-is-now-ga-remove-that-beta-header.jsonld"}}