Hard facts side by side: free tiers, prices, limits, SDKs and privacy. Every value links to the official page it came from and is re-checked every week.
| Fact |  Anthropic (Claude API) |
|---|---|
| Free tier | Trial credits New users receive a small amount of free credits to test the API. Source, Nov 15, 2026 |
| Starting price | $2 per 1M input tokens Claude Sonnet 5.5; $10 per 1M output tokens (Haiku 5.5 from $0.10 input). Source, Nov 15, 2026 |
| Rate limit | 4,000 requests/min Start tier, Claude Sonnet 5.5 (2M input, 400K output tokens/min); new orgs may start lower. Source, Nov 15, 2026 |
| Size limit | 1M token context Claude Fable 5.2, Opus 5.5, Sonnet 5.5 and Haiku 5.5; 128K max output. Source, Nov 15, 2026 |
| Official SDKs | PythonJavaScript / TypeScript.NETGoJavaPHPRubySource, Nov 15, 2026 |
|---|
| Trains on your data | No Inputs and outputs from the Anthropic API are not used for training by default. Source, Nov 15, 2026 |
|---|
| EU hosting | No Inference geo is only us or global; workspace (storage) geo is only us. Source, Nov 15, 2026 |
|---|
| Compliance | SOC 2ISO 27001HIPAASource, Nov 15, 2026 |
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