Anthropic Implements Peak-Hour Throttling for Claude to Manage Growing Demand
Anthropic has quietly adjusted Claude's usage limits, making conversations during peak hours (5:00-11:00 PM PT) consume session limits faster than off-peak times. The move aims to balance surging demand with limited compute capacity.
The Change
How It Works
- Peak hours: 5:00-11:00 PM PT (1:00-7:00 AM GMT next day)
- Effect: A "5-hour session" can be consumed in under 5 hours during peak
- Off-peak: Users get more work done per session during low-demand times
- Weekly limits unchanged: Overall usage allowance stays the same
- ~7% of users affected: Particularly Pro tier subscribers
Anthropic's Explanation
Technical team member Thariq Shihipar: "To manage growing demand for Claude we're adjusting our five hour session limits for free/Pro/Max subs during peak hours. Your weekly limits remain unchanged."
Anthropic has expanded capacity during off-peak hours to compensate.
The Bigger Picture
Demand Outstripping Supply
This is the latest sign that AI demand is outpacing even well-funded companies' ability to scale compute:
- Anthropic raised billions but still faces capacity constraints
- Peak-hour throttling mirrors utilities managing power grids
- Subscription models create predictable demand spikes
- Token-intensive workloads (coding, analysis) hit limits fastest
The Opacity Problem
Anthropic doesn't reveal how many tokens a session contains or how limits are calculated. Users have no way to plan token usage beyond monitoring a dashboard.
Advice for Users
"If you run token-intensive background jobs, shifting them to off-peak hours will stretch your session limits further," Anthropic suggests.
Source: The Register