Perplexity Common Errors Overview Quick reference for the most common Perplexity Sonar API errors, their root causes, and fixes. All Perplexity errors follow the OpenAI error format since the API is OpenAI-compatible. Prerequisites - environment variable set - available for diagnostic commands Error Reference 401 Unauthorized — Invalid API Key Causes: Key missing, expired, revoked, or doesn't start with . Fix: Regenerate at perplexity.ai/settings/api. --- 429 Too Many Requests — Rate Limited Causes: Exceeded requests per minute (RPM). Most tiers allow 50 RPM. Perplexity uses a leaky bucket al…