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The Lilac API applies a default rate limit per organization to keep shared inference capacity fair across customers.

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Default Limit

  • 200 requests per minute per organization.
This limit applies to all Lilac API requests, including inference calls (chat completions, completions, and responses).

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429 Too Many Requests

Requests above the limit may receive an HTTP 429 Too Many Requests response. When this happens:
  • Back off and retry later.
  • If a Retry-After header or retry_after field is present, respect it.
  • Use exponential backoff for automated clients.

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Example

curl -i https://api.getlilac.com/v1/chat/completions \
  -H "Authorization: Bearer your-lilac-api-key" \
  -H "Content-Type: application/json" \
  -d '{ "model": "moonshotai/kimi-k2.6", "messages": [{"role": "user", "content": "hi"}] }'

# HTTP/1.1 429 Too Many Requests
# Retry-After: 12
When using the OpenAI SDK, 429 responses are surfaced as RateLimitError (Python) / RateLimitError (JS). The SDK will retry transient errors with exponential backoff by default — keep that behavior or implement your own.

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Higher Limits

Need more than 200 requests per minute? Contact Lilac support or book a call with the founders to discuss higher limits.