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Perplexity Sonar API

Perplexity API 7 limits verified 2 Aug 2026

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Published limits

PlanLimitWindow When exhaustedEvidence
Tier 0 50 per minute sonar / sonar-pro requests per minute 429 until the minute rolls ● Documented
Perplexity usage-tiers docs, fetched 2 Aug 2026. Tier 0 is any new account at $0 cumulative spend.
Tier 0 5 per minute sonar-deep-research requests per minute 429 until the minute rolls ● Documented
Deep research is rate-limited an order of magnitude harder than standard search at every tier.
Tier 3 1,000 per minute sonar / sonar-pro requests per minute 429 until the minute rolls ● Documented
Reached at $500 cumulative lifetime spend.
Tier 4 4,000 per minute sonar / sonar-pro requests per minute 429 until the minute rolls ● Documented
Reached at $1,000 cumulative spend. ⚠️ This is the ceiling for standard models — Tier 5 ($5,000) grants NO further increase for sonar, sonar-pro or sonar-reasoning-pro. Spending past $1,000 buys deep-research headroom only.
Tier 5 100 per minute sonar-deep-research requests per minute 429 until the minute rolls ● Documented
Reached at $5,000 cumulative spend; 20× the Tier 0 allowance and the only limit that still rises at this tier.
All tiers Cumulative spend Tier advancement account lifetime n/a ● Documented
Tiers are based on cumulative purchases across the account lifetime, not current balance — so a tier is never lost by drawing the balance down. Thresholds: $0 / $50 / $250 / $500 / $1,000 / $5,000.
All tiers Superseded Sonar Chat Completions n/a n/a ○ Observed
The docs note Sonar Chat Completions is now the Agent API. Retained here because integrations built against the old surface will still be citing its limits.