# GPT-4.5 Preview (Deprecated)

**Current Snapshot:** gpt-4.5-preview-2025-02-27

Deprecated - a research preview of GPT-4.5. We recommend using gpt-4.1 or o3
models instead for most use cases.

## Snapshots

### gpt-4.5-preview-2025-02-27

- Context window size: 128000
- Knowledge cutoff date: 2023-10-01
- Maximum output tokens: 16384
- Supported features: function_calling, structured_outputs, streaming,
  system_messages, evals, prompt_caching, image_input

## Supported Tools

## Rate Limits

### gpt-4.5-preview

| Tier   | RPM   | TPM     | Batch Queue Limit |
| ------ | ----- | ------- | ----------------- |
| tier_1 | 1000  | 125000  | 50000             |
| tier_2 | 5000  | 250000  | 500000            |
| tier_3 | 5000  | 500000  | 50000000          |
| tier_4 | 10000 | 1000000 | 100000000         |
| tier_5 | 10000 | 2000000 | 5000000000        |