service-tiers changedapi/service-tiers
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3636**Input tokens**
3737
3838* Cache reads as 0.1 tokens per token read from the cache
39* Cache writes as 1.25 tokens per token written to the cache with a 5 minute TTL
40* Cache writes as 2.00 tokens per token written to the cache with a 1 hour TTL
39* Cache writes as 1.25 tokens per token written to the cache with a 5-minute TTL
40* Cache writes as 2.00 tokens per token written to the cache with a 1-hour TTL
4141* For [US-only inference](https://platform.claude.com/docs/en/manage-claude/data-residency) (`inference_geo: "us"`) requests on Claude 4.6 and later models, input tokens are 1.1 tokens per token
4242* All other input tokens are 1 token per token
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183183The `service_tier` parameter accepts the following values:
184184
185185* `"auto"` (default) - Uses the Priority Tier capacity if available, falling back to your other capacity if not
186* `"standard_only"` - Only use standard tier capacity, useful if you don't want to use your Priority Tier capacity
186* `"standard_only"` - Uses only standard tier capacity, useful if you don't want to use your Priority Tier capacity
187187
188188The response `usage` object also includes the service tier assigned to the request:
189189
from line 223
223223* A commitment duration (1, 3, 6, or 12 months)
224224* A specific model version
225225
226Priority Tier targets 99.5% uptime with prioritized computational resources. Requests beyond your committed capacity automatically fall back to standard tier.
226Priority Tier targets 99.5 percent uptime with prioritized computational resources. Requests beyond your committed capacity automatically fall back to standard tier.
227227
228228### Supported models
229229
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