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AI CURATED HOT STORY · 10/16/2026

Anthropic Launches Claude Opus 5.5 Fast Mode: 2.5x Speedup at Double API Cost with Separate Billing

1 reports archived1 independent sourcesupdated 10/16/2026, 05:32:37
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Anthropic has officially launched the fast mode for Claude Opus 5.5, ending its research preview and removing the waitlist. The feature offers up to 2.5x faster response times without compromising model capabilities but requires separate billing for subscribers and doubles the API cost to $8/$40 per million tokens. It is currently available on Microsoft Foundry, with Google Cloud support coming soon.

LATEST/Anthropic has officially launched the fast mode for Claude Opus 5.5, ending its research preview and removing the waitlist. The feature offers up to 2.5x faster response times without compromising model capabilities but requires separate billing for subscribers and doubles the API cost to $8/$40 per million tokens. It is currently available on Microsoft Foundry, with Google Cloud support coming soon.

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Total 1 reports · Latest first
  1. 宝玉 (@dotey)T2·68 pts
    • Claude Opus 5.5 Fast Mode is now generally available, delivering up to 2.5x faster inference speeds while maintaining identical model intelligence.
    • Differentiated pricing applies: Subscribers must use separate 'extra usage' credits rather than their plan quota, while API costs double to $8/$40 per million tokens.
    • Ecosystem integration sees Microsoft Foundry launching first, with Google Cloud support imminent.
Anthropic Launches Claude Opus 5.5 Fast Mode: 2.5x Speedup at Double API Cost with Separate Billing | Today for AI