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Every model on ShuttleAI is assigned a tier that determines the minimum plan required to use it. Higher-tier models generally offer better reasoning, larger context windows, or are from frontier providers.

Tier breakdown

Free tier

Available to everyone — no plan required. Free-tier models are ideal for experimentation, prototyping, and lightweight tasks.

Basic tier

Requires the Basic plan ($10/mo) or higher. Basic-tier models offer strong performance for everyday use at an affordable price.

Premium tier

Requires the Premium plan ($25/mo) or higher. Premium-tier models are frontier-level — the most capable models available.
The Scale plan ($75/mo) includes access to all models plus early access to beta models and higher rate limits. See Plans for details.

How tiers affect your usage

  • If your plan doesn’t include a model’s tier, the API returns a 403 error
  • You can always use models from lower tiers (e.g., Premium plans can use Free and Basic models)
  • Some models have a request multiplier that costs multiple requests per call

Checking model requirements

Use the verbose models endpoint to see tier requirements for each model:
Each model includes a plan field indicating the minimum tier:

View all models

See the complete, up-to-date model list with tiers at shuttleai.com/models.