Tiers and rate limits

Access tiers:

• All members qualify for basic access after completing signup.
• Apply for advanced API access here: https://forms.gle/iMhGvPZ1yU173jk2A.
• Traders that represent more than 3.75% of exchange volume in a given month are automatically approved for premier API access for the following month. Traders may also qualify for premier API access through meeting with the exchange and establishing extensive technical proficiency. In particular, the following properties/capabilities are considered:
  • Knowledge of common security practices for API usage.
  • Proficiency in setting up monitoring for API usage, and ability to monitor API usage in near real-time.
  • Understanding and implementation of rate limiting and throttling mechanisms imposed by the API, and the ability to self-limit load.
  • Awareness of legal and compliance aspects related to API usage.

Traders who qualify for advanced or premier access also gain access to batched order requests. Traders who qualify for premier access will also gain access to Kalshi's FIX API.

Rate limits:

Write Limits

• Only the following APIs fall under this limit, for the batch APIs, each item in the batch is considered 1 transaction.
  • BatchCreateOrders
  • BatchCancelOrders
  • CreateOrder
  • CancelOrder
  • AmendOrder
  • DecreaseOrder
• 150 TPS, 9000 TPM for premier access members
• 30 TPS, 1800 TPM for advanced access members
• 10 TPS, 600 TPM for basic access members

Read Limits

• 150 TPS, 9000 TPM for premier access members
• 30 TPS, 1800 TPM for advanced access members
• 10 TPS, 600 TPM for basic access members