Claude slow or laggy: causes and fixes
Is there an outage right now?
Claude official status is operational. If this error persists, it is likely an implementation or environment issue on your side.
Updated: Jul 21, 2026, 8:03 PM UTC
View Claude status →What this error means
Slow or stalling responses. Causes: demand spikes, long chats, large attachments, network, or Anthropic-side latency.
Common causes
- •Congestion / overload
- •Conversation or attachments too large
- •Unstable network
- •Anthropic-side latency
- •Heavy model
How to fix
- 1.Start a new conversation
- 2.Reduce attachments / text
- 3.Stabilize your network
- 4.Use it off-peak
- 5.Check for latency at top of page
When waiting helps (and when it won't)
If congestion-related, off-peak helps. If always slow, split conversations.
Alternatives when Claude is down
Related symptoms
FAQ
What causes Claudeが重い・遅い?
Slow or stalling responses. Causes: demand spikes, long chats, large attachments, network, or Anthropic-side latency.
How do I fix Claudeが重い・遅い?
Start a new conversation / Reduce attachments / text / Stabilize your network / Use it off-peak / Check for latency at top of page