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Key error diagnosis

Anthropic | insufficient balance

Anthropic returning 402 / insufficient balance should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider
Anthropic
global provider route
Error type
insufficient balance
high
Status code
402
insufficient-balance
Sample models
13
Claude 3.5 Haiku · Claude 3.7 Sonnet · Claude 3.7 Sonnet (thinking)
Error route summary
Error type
insufficient-balance
high
Provider
Anthropic
Status code
402
Read-only check. Detection data burns after 5 minutes.
Read-only check. Detection data burns after 5 minutes.

What this error usually means

Anthropic returning 402 / insufficient balance should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

  • Provider: Anthropic
  • Error type: insufficient balance
  • Status code: 402

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

  • Run read-only identity first: confirm whether the key really belongs to Anthropic, not just a compatible protocol.
  • Then list models or run a lightweight probe: check whether models like Claude 3.5 Haiku · Claude 3.7 Sonnet · Claude 3.7 Sonnet (thinking) are visible and return stable evidence.
  • Finally record 402, error body, latency, egress IP, and reproducibility to separate balance, permission, route, or upstream issues.

Next action

insufficient balance should not only show failed. The console should return the next move: refill balance, change Base URL, switch model, add permission, change egress IP, hold listing, or monitor.

  • Read-only check. Detection data burns after 5 minutes.
  • global provider route
  • Claude 3.5 Haiku · Claude 3.7 Sonnet · Claude 3.7 Sonnet (thinking)